10-Q Filing

AON PLC CIK: 315293 Q2 2024

Filing Information

Form Type	10-Q
Accession Number	`0001628280-24-033161`
Period End Date	20240630
Filing Date	20240726
Fiscal Year	2024
Fiscal Period	Q2
XBRL Instance	aon-20240630_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 158 Income Statement 180 Cash Flow Statement 198 Stockholders Equity 154 Comprehensive Income 96

Balance Sheet 158 line items

Line Item	Tag	Value	Unit	Period
Ordinary shares, nominal value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Ordinary shares, nominal value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Ordinary shares, nominal value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Ordinary shares, nominal value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Ordinary shares, authorized shares (in shares)	`CommonStockSharesAuthorized`	500.00M	shares	Point-in-time
Ordinary shares, authorized shares (in shares)	`CommonStockSharesAuthorized`	500.00M	shares	Point-in-time
Ordinary shares, authorized shares (in shares)	`CommonStockSharesAuthorized`	500.00M	shares	Point-in-time
Ordinary shares, authorized shares (in shares)	`CommonStockSharesAuthorized`	500.00M	shares	Point-in-time
Ordinary shares, issued shares (in shares)	`CommonStockSharesIssued`	198.60M	shares	Point-in-time
Ordinary shares, issued shares (in shares)	`CommonStockSharesIssued`	198.60M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$974.00M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$974.00M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$778.00M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$778.00M	USD	Point-in-time
Ordinary shares, issued shares (in shares)	`CommonStockSharesIssued`	217.20M	shares	Point-in-time
Ordinary shares, issued shares (in shares)	`CommonStockSharesIssued`	217.20M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$952.00M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$952.00M	USD	Point-in-time
Short-term investments	`ShortTermInvestments`	$182.00M	USD	Point-in-time
Short-term investments	`ShortTermInvestments`	$182.00M	USD	Point-in-time
Short-term investments	`ShortTermInvestments`	$369.00M	USD	Point-in-time
Short-term investments	`ShortTermInvestments`	$369.00M	USD	Point-in-time
Receivables, net	`AccountsReceivableNetCurrent`	$3.25B	USD	Point-in-time
Receivables, net	`AccountsReceivableNetCurrent`	$3.25B	USD	Point-in-time
Receivables, net	`AccountsReceivableNetCurrent`	$4.46B	USD	Point-in-time
Receivables, net	`AccountsReceivableNetCurrent`	$4.46B	USD	Point-in-time
Fiduciary assets	`FiduciaryAssets`	$18.86B	USD	Point-in-time
Fiduciary assets	`FiduciaryAssets`	$18.86B	USD	Point-in-time
Fiduciary assets	`FiduciaryAssets`	$16.31B	USD	Point-in-time
Fiduciary assets	`FiduciaryAssets`	$16.31B	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$1.06B	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$1.06B	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$996.00M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$996.00M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$21.70B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$21.70B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$25.54B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$25.54B	USD	Point-in-time
Goodwill	`Goodwill`	$8.41B	USD	Point-in-time
Goodwill	`Goodwill`	$8.41B	USD	Point-in-time
Goodwill	`Goodwill`	$15.28B	USD	Point-in-time
Goodwill	`Goodwill`	$15.28B	USD	Point-in-time
Intangible assets, net	`FiniteLivedIntangibleAssetsNet`	$234.00M	USD	Point-in-time
Intangible assets, net	`FiniteLivedIntangibleAssetsNet`	$234.00M	USD	Point-in-time
Intangible assets, net	`FiniteLivedIntangibleAssetsNet`	$6.79B	USD	Point-in-time
Intangible assets, net	`FiniteLivedIntangibleAssetsNet`	$6.79B	USD	Point-in-time
Fixed assets, net	`PropertyPlantAndEquipmentNet`	$636.00M	USD	Point-in-time
Fixed assets, net	`PropertyPlantAndEquipmentNet`	$636.00M	USD	Point-in-time
Fixed assets, net	`PropertyPlantAndEquipmentNet`	$638.00M	USD	Point-in-time
Fixed assets, net	`PropertyPlantAndEquipmentNet`	$638.00M	USD	Point-in-time
Operating lease right-of-use assets	`OperatingLeaseRightOfUseAsset`	$723.00M	USD	Point-in-time
Operating lease right-of-use assets	`OperatingLeaseRightOfUseAsset`	$723.00M	USD	Point-in-time
Operating lease right-of-use assets	`OperatingLeaseRightOfUseAsset`	$650.00M	USD	Point-in-time
Operating lease right-of-use assets	`OperatingLeaseRightOfUseAsset`	$650.00M	USD	Point-in-time
Deferred tax assets	`DeferredIncomeTaxAssetsNet`	$1.20B	USD	Point-in-time
Deferred tax assets	`DeferredIncomeTaxAssetsNet`	$1.20B	USD	Point-in-time
Deferred tax assets	`DeferredIncomeTaxAssetsNet`	$1.22B	USD	Point-in-time
Deferred tax assets	`DeferredIncomeTaxAssetsNet`	$1.22B	USD	Point-in-time
Prepaid pension	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$618.00M	USD	Point-in-time
Prepaid pension	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$618.00M	USD	Point-in-time
Prepaid pension	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$629.00M	USD	Point-in-time
Prepaid pension	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$629.00M	USD	Point-in-time
Other non-current assets	`OtherAssetsNoncurrent`	$506.00M	USD	Point-in-time
Other non-current assets	`OtherAssetsNoncurrent`	$506.00M	USD	Point-in-time
Other non-current assets	`OtherAssetsNoncurrent`	$629.00M	USD	Point-in-time
Other non-current assets	`OtherAssetsNoncurrent`	$629.00M	USD	Point-in-time
Total assets	`Assets`	$33.96B	USD	Point-in-time
Total assets	`Assets`	$33.96B	USD	Point-in-time
Total assets	`Assets`	$51.45B	USD	Point-in-time
Total assets	`Assets`	$51.45B	USD	Point-in-time
Accounts payable and accrued liabilities	`AccountsPayableAndAccruedLiabilitiesCurrent`	$2.26B	USD	Point-in-time
Accounts payable and accrued liabilities	`AccountsPayableAndAccruedLiabilitiesCurrent`	$2.26B	USD	Point-in-time
Accounts payable and accrued liabilities	`AccountsPayableAndAccruedLiabilitiesCurrent`	$2.32B	USD	Point-in-time
Accounts payable and accrued liabilities	`AccountsPayableAndAccruedLiabilitiesCurrent`	$2.32B	USD	Point-in-time
Short-term debt and current portion of long-term debt	`DebtCurrent`	$4.00M	USD	Point-in-time
Short-term debt and current portion of long-term debt	`DebtCurrent`	$4.00M	USD	Point-in-time
Short-term debt and current portion of long-term debt	`DebtCurrent`	$1.20B	USD	Point-in-time
Short-term debt and current portion of long-term debt	`DebtCurrent`	$1.20B	USD	Point-in-time
Fiduciary liabilities	`FiduciaryLiabilities`	$18.86B	USD	Point-in-time
Fiduciary liabilities	`FiduciaryLiabilities`	$18.86B	USD	Point-in-time
Fiduciary liabilities	`FiduciaryLiabilities`	$16.31B	USD	Point-in-time
Fiduciary liabilities	`FiduciaryLiabilities`	$16.31B	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$2.31B	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$2.31B	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$1.88B	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$1.88B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$21.65B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$21.65B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$23.50B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$23.50B	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$17.61B	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$17.61B	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$9.99B	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$9.99B	USD	Point-in-time
Non-current operating lease liabilities	`OperatingLeaseLiabilityNoncurrent`	$641.00M	USD	Point-in-time
Non-current operating lease liabilities	`OperatingLeaseLiabilityNoncurrent`	$641.00M	USD	Point-in-time
Non-current operating lease liabilities	`OperatingLeaseLiabilityNoncurrent`	$702.00M	USD	Point-in-time
Non-current operating lease liabilities	`OperatingLeaseLiabilityNoncurrent`	$702.00M	USD	Point-in-time
Deferred tax liabilities	`DeferredIncomeTaxLiabilitiesNet`	$115.00M	USD	Point-in-time
Deferred tax liabilities	`DeferredIncomeTaxLiabilitiesNet`	$115.00M	USD	Point-in-time
Deferred tax liabilities	`DeferredIncomeTaxLiabilitiesNet`	$1.18B	USD	Point-in-time
Deferred tax liabilities	`DeferredIncomeTaxLiabilitiesNet`	$1.18B	USD	Point-in-time
Pension, other postretirement, and postemployment liabilities	`PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent`	$1.17B	USD	Point-in-time
Pension, other postretirement, and postemployment liabilities	`PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent`	$1.17B	USD	Point-in-time
Pension, other postretirement, and postemployment liabilities	`PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent`	$1.23B	USD	Point-in-time
Pension, other postretirement, and postemployment liabilities	`PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent`	$1.23B	USD	Point-in-time
Other non-current liabilities	`OtherLiabilitiesNoncurrent`	$1.07B	USD	Point-in-time
Other non-current liabilities	`OtherLiabilitiesNoncurrent`	$1.07B	USD	Point-in-time
Other non-current liabilities	`OtherLiabilitiesNoncurrent`	$1.14B	USD	Point-in-time
Other non-current liabilities	`OtherLiabilitiesNoncurrent`	$1.14B	USD	Point-in-time
Total liabilities	`Liabilities`	$34.70B	USD	Point-in-time
Total liabilities	`Liabilities`	$34.70B	USD	Point-in-time
Total liabilities	`Liabilities`	$45.30B	USD	Point-in-time
Total liabilities	`Liabilities`	$45.30B	USD	Point-in-time
Redeemable noncontrolling interests	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$130.00M	USD	Point-in-time
Redeemable noncontrolling interests	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$130.00M	USD	Point-in-time
Redeemable noncontrolling interests	`RedeemableNoncontrollingInterestEquityCarryingAmount`	-	USD	Point-in-time
Redeemable noncontrolling interests	`RedeemableNoncontrollingInterestEquityCarryingAmount`	-	USD	Point-in-time
Ordinary shares - $0.01 nominal value Authorized: 500.0 shares (issued: 2024 - 217.2; 2023 - 198.6)	`CommonStockValue`	$2.00M	USD	Point-in-time
Ordinary shares - $0.01 nominal value Authorized: 500.0 shares (issued: 2024 - 217.2; 2023 - 198.6)	`CommonStockValue`	$2.00M	USD	Point-in-time
Ordinary shares - $0.01 nominal value Authorized: 500.0 shares (issued: 2024 - 217.2; 2023 - 198.6)	`CommonStockValue`	$2.00M	USD	Point-in-time
Ordinary shares - $0.01 nominal value Authorized: 500.0 shares (issued: 2024 - 217.2; 2023 - 198.6)	`CommonStockValue`	$2.00M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$12.91B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$12.91B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$6.94B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$6.94B	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-3.40B	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-3.40B	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-2.57B	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-2.57B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-4.37B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-4.37B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-4.48B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-4.48B	USD	Point-in-time
Total Aon shareholders' equity (deficit)	`StockholdersEquity`	$-826.00M	USD	Point-in-time
Total Aon shareholders' equity (deficit)	`StockholdersEquity`	$-826.00M	USD	Point-in-time
Total Aon shareholders' equity (deficit)	`StockholdersEquity`	$5.86B	USD	Point-in-time
Total Aon shareholders' equity (deficit)	`StockholdersEquity`	$5.86B	USD	Point-in-time
Nonredeemable noncontrolling interests	`NonredeemableNoncontrollingInterest`	$84.00M	USD	Point-in-time
Nonredeemable noncontrolling interests	`NonredeemableNoncontrollingInterest`	$84.00M	USD	Point-in-time
Nonredeemable noncontrolling interests	`NonredeemableNoncontrollingInterest`	$168.00M	USD	Point-in-time
Nonredeemable noncontrolling interests	`NonredeemableNoncontrollingInterest`	$168.00M	USD	Point-in-time
Total equity (deficit)	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.03B	USD	Point-in-time
Total equity (deficit)	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.03B	USD	Point-in-time
Total equity (deficit)	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-429.00M	USD	Point-in-time
Total equity (deficit)	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-429.00M	USD	Point-in-time
Total equity (deficit)	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-28.00M	USD	Point-in-time
Total equity (deficit)	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-28.00M	USD	Point-in-time
Total equity (deficit)	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$58.00M	USD	Point-in-time
Total equity (deficit)	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$58.00M	USD	Point-in-time
Total equity (deficit)	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$162.00M	USD	Point-in-time
Total equity (deficit)	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$162.00M	USD	Point-in-time
Total equity (deficit)	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-742.00M	USD	Point-in-time
Total equity (deficit)	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-742.00M	USD	Point-in-time
Total liabilities, redeemable noncontrolling interests and equity (deficit)	`LiabilitiesAndStockholdersEquity`	$33.96B	USD	Point-in-time
Total liabilities, redeemable noncontrolling interests and equity (deficit)	`LiabilitiesAndStockholdersEquity`	$33.96B	USD	Point-in-time
Total liabilities, redeemable noncontrolling interests and equity (deficit)	`LiabilitiesAndStockholdersEquity`	$51.45B	USD	Point-in-time
Total liabilities, redeemable noncontrolling interests and equity (deficit)	`LiabilitiesAndStockholdersEquity`	$51.45B	USD	Point-in-time

Income Statement 180 line items

Line Item	Tag	Value	Unit	Period
Total revenue	`RevenueFromContractWithCustomerExcludingAssessedTax`	$7.83B	USD	2 Qtrs
Total revenue	`RevenueFromContractWithCustomerExcludingAssessedTax`	$7.83B	USD	2 Qtrs
Total revenue	`RevenueFromContractWithCustomerExcludingAssessedTax`	$3.76B	USD	1 Quarter
Total revenue	`RevenueFromContractWithCustomerExcludingAssessedTax`	$3.76B	USD	1 Quarter
Total revenue	`RevenueFromContractWithCustomerExcludingAssessedTax`	$3.18B	USD	1 Quarter
Total revenue	`RevenueFromContractWithCustomerExcludingAssessedTax`	$3.18B	USD	1 Quarter
Total revenue	`RevenueFromContractWithCustomerExcludingAssessedTax`	$7.05B	USD	2 Qtrs
Total revenue	`RevenueFromContractWithCustomerExcludingAssessedTax`	$7.05B	USD	2 Qtrs
Compensation and benefits	`LaborAndRelatedExpense`	$1.75B	USD	1 Quarter
Compensation and benefits	`LaborAndRelatedExpense`	$1.75B	USD	1 Quarter
Compensation and benefits	`LaborAndRelatedExpense`	$3.55B	USD	2 Qtrs
Compensation and benefits	`LaborAndRelatedExpense`	$3.55B	USD	2 Qtrs
Compensation and benefits	`LaborAndRelatedExpense`	$4.01B	USD	2 Qtrs
Compensation and benefits	`LaborAndRelatedExpense`	$4.01B	USD	2 Qtrs
Compensation and benefits	`LaborAndRelatedExpense`	$2.13B	USD	1 Quarter
Compensation and benefits	`LaborAndRelatedExpense`	$2.13B	USD	1 Quarter
Information technology	`InformationTechnologyAndDataProcessing`	$256.00M	USD	2 Qtrs
Information technology	`InformationTechnologyAndDataProcessing`	$256.00M	USD	2 Qtrs
Information technology	`InformationTechnologyAndDataProcessing`	$129.00M	USD	1 Quarter
Information technology	`InformationTechnologyAndDataProcessing`	$129.00M	USD	1 Quarter
Information technology	`InformationTechnologyAndDataProcessing`	$268.00M	USD	2 Qtrs
Information technology	`InformationTechnologyAndDataProcessing`	$268.00M	USD	2 Qtrs
Information technology	`InformationTechnologyAndDataProcessing`	$132.00M	USD	1 Quarter
Information technology	`InformationTechnologyAndDataProcessing`	$132.00M	USD	1 Quarter
Premises	`OccupancyNet`	$143.00M	USD	2 Qtrs
Premises	`OccupancyNet`	$143.00M	USD	2 Qtrs
Premises	`OccupancyNet`	$68.00M	USD	1 Quarter
Premises	`OccupancyNet`	$68.00M	USD	1 Quarter
Premises	`OccupancyNet`	$82.00M	USD	1 Quarter
Premises	`OccupancyNet`	$82.00M	USD	1 Quarter
Premises	`OccupancyNet`	$153.00M	USD	2 Qtrs
Premises	`OccupancyNet`	$153.00M	USD	2 Qtrs
Depreciation of fixed assets	`Depreciation`	$89.00M	USD	2 Qtrs
Depreciation of fixed assets	`Depreciation`	$89.00M	USD	2 Qtrs
Depreciation of fixed assets	`Depreciation`	$45.00M	USD	1 Quarter
Depreciation of fixed assets	`Depreciation`	$45.00M	USD	1 Quarter
Depreciation of fixed assets	`Depreciation`	$39.00M	USD	1 Quarter
Depreciation of fixed assets	`Depreciation`	$39.00M	USD	1 Quarter
Depreciation of fixed assets	`Depreciation`	$77.00M	USD	2 Qtrs
Depreciation of fixed assets	`Depreciation`	$77.00M	USD	2 Qtrs
Amortization and impairment of intangible assets	`AmortizationAndImpairmentOfIntangibleAssets`	$50.00M	USD	2 Qtrs
Amortization and impairment of intangible assets	`AmortizationAndImpairmentOfIntangibleAssets`	$50.00M	USD	2 Qtrs
Amortization and impairment of intangible assets	`AmortizationAndImpairmentOfIntangibleAssets`	$144.00M	USD	2 Qtrs
Amortization and impairment of intangible assets	`AmortizationAndImpairmentOfIntangibleAssets`	$144.00M	USD	2 Qtrs
Amortization and impairment of intangible assets	`AmortizationAndImpairmentOfIntangibleAssets`	$128.00M	USD	1 Quarter
Amortization and impairment of intangible assets	`AmortizationAndImpairmentOfIntangibleAssets`	$128.00M	USD	1 Quarter
Amortization and impairment of intangible assets	`AmortizationAndImpairmentOfIntangibleAssets`	$25.00M	USD	1 Quarter
Amortization and impairment of intangible assets	`AmortizationAndImpairmentOfIntangibleAssets`	$25.00M	USD	1 Quarter
Other general expense	`OtherGeneralExpenses`	$320.00M	USD	1 Quarter
Other general expense	`OtherGeneralExpenses`	$320.00M	USD	1 Quarter
Other general expense	`OtherGeneralExpenses`	$803.00M	USD	2 Qtrs
Other general expense	`OtherGeneralExpenses`	$803.00M	USD	2 Qtrs
Other general expense	`OtherGeneralExpenses`	$455.00M	USD	1 Quarter
Other general expense	`OtherGeneralExpenses`	$455.00M	USD	1 Quarter
Other general expense	`OtherGeneralExpenses`	$649.00M	USD	2 Qtrs
Other general expense	`OtherGeneralExpenses`	$649.00M	USD	2 Qtrs
Accelerating Aon United Program expenses	`RestructuringCharges`	-	USD	1 Quarter
Accelerating Aon United Program expenses	`RestructuringCharges`	-	USD	1 Quarter
Accelerating Aon United Program expenses	`RestructuringCharges`	$251.00M	USD	2 Qtrs
Accelerating Aon United Program expenses	`RestructuringCharges`	$251.00M	USD	2 Qtrs
Accelerating Aon United Program expenses	`RestructuringCharges`	$132.00M	USD	1 Quarter
Accelerating Aon United Program expenses	`RestructuringCharges`	$132.00M	USD	1 Quarter
Accelerating Aon United Program expenses	`RestructuringCharges`	-	USD	2 Qtrs
Accelerating Aon United Program expenses	`RestructuringCharges`	-	USD	2 Qtrs
Total operating expenses	`CostsAndExpenses`	$2.33B	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$2.33B	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$5.71B	USD	2 Qtrs
Total operating expenses	`CostsAndExpenses`	$5.71B	USD	2 Qtrs
Total operating expenses	`CostsAndExpenses`	$3.10B	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$3.10B	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$4.73B	USD	2 Qtrs
Total operating expenses	`CostsAndExpenses`	$4.73B	USD	2 Qtrs
Operating income	`OperatingIncomeLoss`	$2.31B	USD	2 Qtrs
Operating income	`OperatingIncomeLoss`	$2.31B	USD	2 Qtrs
Operating income	`OperatingIncomeLoss`	$656.00M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$656.00M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$842.00M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$842.00M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$2.12B	USD	2 Qtrs
Operating income	`OperatingIncomeLoss`	$2.12B	USD	2 Qtrs
Interest income	`InvestmentIncomeInterestAndDividend`	$31.00M	USD	1 Quarter
Interest income	`InvestmentIncomeInterestAndDividend`	$31.00M	USD	1 Quarter
Interest income	`InvestmentIncomeInterestAndDividend`	$5.00M	USD	1 Quarter
Interest income	`InvestmentIncomeInterestAndDividend`	$5.00M	USD	1 Quarter
Interest income	`InvestmentIncomeInterestAndDividend`	$59.00M	USD	2 Qtrs
Interest income	`InvestmentIncomeInterestAndDividend`	$59.00M	USD	2 Qtrs
Interest income	`InvestmentIncomeInterestAndDividend`	$10.00M	USD	2 Qtrs
Interest income	`InvestmentIncomeInterestAndDividend`	$10.00M	USD	2 Qtrs
Interest expense	`InterestExpenseNonoperating`	$241.00M	USD	2 Qtrs
Interest expense	`InterestExpenseNonoperating`	$241.00M	USD	2 Qtrs
Interest expense	`InterestExpenseNonoperating`	$369.00M	USD	2 Qtrs
Interest expense	`InterestExpenseNonoperating`	$369.00M	USD	2 Qtrs
Interest expense	`InterestExpenseNonoperating`	$225.00M	USD	1 Quarter
Interest expense	`InterestExpenseNonoperating`	$225.00M	USD	1 Quarter
Interest expense	`InterestExpenseNonoperating`	$130.00M	USD	1 Quarter
Interest expense	`InterestExpenseNonoperating`	$130.00M	USD	1 Quarter
Other income (expense)	`OtherNonoperatingIncomeExpense`	$-84.00M	USD	2 Qtrs
Other income (expense)	`OtherNonoperatingIncomeExpense`	$-84.00M	USD	2 Qtrs
Other income (expense)	`OtherNonoperatingIncomeExpense`	$311.00M	USD	2 Qtrs
Other income (expense)	`OtherNonoperatingIncomeExpense`	$311.00M	USD	2 Qtrs
Other income (expense)	`OtherNonoperatingIncomeExpense`	$-59.00M	USD	1 Quarter
Other income (expense)	`OtherNonoperatingIncomeExpense`	$-59.00M	USD	1 Quarter
Other income (expense)	`OtherNonoperatingIncomeExpense`	$236.00M	USD	1 Quarter
Other income (expense)	`OtherNonoperatingIncomeExpense`	$236.00M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$2.00B	USD	2 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$2.00B	USD	2 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$698.00M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$698.00M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$2.12B	USD	2 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$2.12B	USD	2 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$658.00M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$658.00M	USD	1 Quarter
Income tax expense	`IncomeTaxExpenseBenefit`	$83.00M	USD	1 Quarter
Income tax expense	`IncomeTaxExpenseBenefit`	$83.00M	USD	1 Quarter
Income tax expense	`IncomeTaxExpenseBenefit`	$491.00M	USD	2 Qtrs
Income tax expense	`IncomeTaxExpenseBenefit`	$491.00M	USD	2 Qtrs
Income tax expense	`IncomeTaxExpenseBenefit`	$346.00M	USD	2 Qtrs
Income tax expense	`IncomeTaxExpenseBenefit`	$346.00M	USD	2 Qtrs
Income tax expense	`IncomeTaxExpenseBenefit`	$160.00M	USD	1 Quarter
Income tax expense	`IncomeTaxExpenseBenefit`	$160.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.65B	USD	2 Qtrs
Net income	`ProfitLoss`	$1.65B	USD	2 Qtrs
Net income	`ProfitLoss`	$575.00M	USD	1 Quarter
Net income	`ProfitLoss`	$575.00M	USD	1 Quarter
Net income	`ProfitLoss`	$538.00M	USD	1 Quarter
Net income	`ProfitLoss`	$538.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.63B	USD	2 Qtrs
Net income	`ProfitLoss`	$1.63B	USD	2 Qtrs
Net income	`ProfitLoss`	$1.09B	USD	1 Quarter
Net income	`ProfitLoss`	$1.09B	USD	1 Quarter
Net income	`ProfitLoss`	$1.08B	USD	1 Quarter
Net income	`ProfitLoss`	$1.08B	USD	1 Quarter
Less: Net income attributable to redeemable and non-redeemable noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$36.00M	USD	2 Qtrs
Less: Net income attributable to redeemable and non-redeemable noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$36.00M	USD	2 Qtrs
Less: Net income attributable to redeemable and non-redeemable noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$15.00M	USD	1 Quarter
Less: Net income attributable to redeemable and non-redeemable noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$15.00M	USD	1 Quarter
Less: Net income attributable to redeemable and non-redeemable noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$44.00M	USD	2 Qtrs
Less: Net income attributable to redeemable and non-redeemable noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$44.00M	USD	2 Qtrs
Less: Net income attributable to redeemable and non-redeemable noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$14.00M	USD	1 Quarter
Less: Net income attributable to redeemable and non-redeemable noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$14.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLoss`	$1.59B	USD	2 Qtrs
Net income attributable to Aon shareholders	`NetIncomeLoss`	$1.59B	USD	2 Qtrs
Net income attributable to Aon shareholders	`NetIncomeLoss`	$524.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLoss`	$524.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLoss`	$1.61B	USD	2 Qtrs
Net income attributable to Aon shareholders	`NetIncomeLoss`	$1.61B	USD	2 Qtrs
Net income attributable to Aon shareholders	`NetIncomeLoss`	$560.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLoss`	$560.00M	USD	1 Quarter
Basic net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareBasic`	$7.84	USD	2 Qtrs
Basic net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareBasic`	$7.84	USD	2 Qtrs
Basic net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareBasic`	$2.47	USD	1 Quarter
Basic net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareBasic`	$2.47	USD	1 Quarter
Basic net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareBasic`	$2.74	USD	1 Quarter
Basic net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareBasic`	$2.74	USD	1 Quarter
Basic net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareBasic`	$7.75	USD	2 Qtrs
Basic net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareBasic`	$7.75	USD	2 Qtrs
Diluted net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareDiluted`	$2.46	USD	1 Quarter
Diluted net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareDiluted`	$2.46	USD	1 Quarter
Diluted net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareDiluted`	$7.79	USD	2 Qtrs
Diluted net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareDiluted`	$7.79	USD	2 Qtrs
Diluted net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareDiluted`	$7.72	USD	2 Qtrs
Diluted net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareDiluted`	$7.72	USD	2 Qtrs
Diluted net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareDiluted`	$2.71	USD	1 Quarter
Diluted net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareDiluted`	$2.71	USD	1 Quarter
Weighted average ordinary shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	205.80M	shares	2 Qtrs
Weighted average ordinary shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	205.80M	shares	2 Qtrs
Weighted average ordinary shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	212.50M	shares	1 Quarter
Weighted average ordinary shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	212.50M	shares	1 Quarter
Weighted average ordinary shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	205.40M	shares	2 Qtrs
Weighted average ordinary shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	205.40M	shares	2 Qtrs
Weighted average ordinary shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	204.70M	shares	1 Quarter
Weighted average ordinary shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	204.70M	shares	1 Quarter
Weighted average ordinary shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	206.30M	shares	1 Quarter
Weighted average ordinary shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	206.30M	shares	1 Quarter
Weighted average ordinary shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	213.30M	shares	1 Quarter
Weighted average ordinary shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	213.30M	shares	1 Quarter
Weighted average ordinary shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	206.70M	shares	2 Qtrs
Weighted average ordinary shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	206.70M	shares	2 Qtrs
Weighted average ordinary shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	206.70M	shares	2 Qtrs
Weighted average ordinary shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	206.70M	shares	2 Qtrs

Cash Flow Statement 198 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$1.65B	USD	2 Qtrs
Net income	`ProfitLoss`	$1.65B	USD	2 Qtrs
Net income	`ProfitLoss`	$575.00M	USD	1 Quarter
Net income	`ProfitLoss`	$575.00M	USD	1 Quarter
Net income	`ProfitLoss`	$538.00M	USD	1 Quarter
Net income	`ProfitLoss`	$538.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.63B	USD	2 Qtrs
Net income	`ProfitLoss`	$1.63B	USD	2 Qtrs
Net income	`ProfitLoss`	$1.09B	USD	1 Quarter
Net income	`ProfitLoss`	$1.09B	USD	1 Quarter
Net income	`ProfitLoss`	$1.08B	USD	1 Quarter
Net income	`ProfitLoss`	$1.08B	USD	1 Quarter
Gain from sales of businesses	`GainLossOnSaleOfBusiness`	-	USD	1 Quarter
Gain from sales of businesses	`GainLossOnSaleOfBusiness`	-	USD	1 Quarter
Gain from sales of businesses	`GainLossOnSaleOfBusiness`	$257.00M	USD	2 Qtrs
Gain from sales of businesses	`GainLossOnSaleOfBusiness`	$257.00M	USD	2 Qtrs
Gain from sales of businesses	`GainLossOnSaleOfBusiness`	-	USD	2 Qtrs
Gain from sales of businesses	`GainLossOnSaleOfBusiness`	-	USD	2 Qtrs
Gain from sales of businesses	`GainLossOnSaleOfBusiness`	$257.00M	USD	1 Quarter
Gain from sales of businesses	`GainLossOnSaleOfBusiness`	$257.00M	USD	1 Quarter
Depreciation of fixed assets	`Depreciation`	$89.00M	USD	2 Qtrs
Depreciation of fixed assets	`Depreciation`	$89.00M	USD	2 Qtrs
Depreciation of fixed assets	`Depreciation`	$45.00M	USD	1 Quarter
Depreciation of fixed assets	`Depreciation`	$45.00M	USD	1 Quarter
Depreciation of fixed assets	`Depreciation`	$39.00M	USD	1 Quarter
Depreciation of fixed assets	`Depreciation`	$39.00M	USD	1 Quarter
Depreciation of fixed assets	`Depreciation`	$77.00M	USD	2 Qtrs
Depreciation of fixed assets	`Depreciation`	$77.00M	USD	2 Qtrs
Amortization and impairment of intangible assets	`AmortizationAndImpairmentOfIntangibleAssets`	$50.00M	USD	2 Qtrs
Amortization and impairment of intangible assets	`AmortizationAndImpairmentOfIntangibleAssets`	$50.00M	USD	2 Qtrs
Amortization and impairment of intangible assets	`AmortizationAndImpairmentOfIntangibleAssets`	$144.00M	USD	2 Qtrs
Amortization and impairment of intangible assets	`AmortizationAndImpairmentOfIntangibleAssets`	$144.00M	USD	2 Qtrs
Amortization and impairment of intangible assets	`AmortizationAndImpairmentOfIntangibleAssets`	$128.00M	USD	1 Quarter
Amortization and impairment of intangible assets	`AmortizationAndImpairmentOfIntangibleAssets`	$128.00M	USD	1 Quarter
Amortization and impairment of intangible assets	`AmortizationAndImpairmentOfIntangibleAssets`	$25.00M	USD	1 Quarter
Amortization and impairment of intangible assets	`AmortizationAndImpairmentOfIntangibleAssets`	$25.00M	USD	1 Quarter
Share-based compensation expense	`ShareBasedCompensation`	$226.00M	USD	2 Qtrs
Share-based compensation expense	`ShareBasedCompensation`	$226.00M	USD	2 Qtrs
Share-based compensation expense	`ShareBasedCompensation`	$247.00M	USD	2 Qtrs
Share-based compensation expense	`ShareBasedCompensation`	$247.00M	USD	2 Qtrs
Deferred income taxes	`DeferredIncomeTaxesAndTaxCredits`	$-122.00M	USD	2 Qtrs
Deferred income taxes	`DeferredIncomeTaxesAndTaxCredits`	$-122.00M	USD	2 Qtrs
Deferred income taxes	`DeferredIncomeTaxesAndTaxCredits`	$-168.00M	USD	2 Qtrs
Deferred income taxes	`DeferredIncomeTaxesAndTaxCredits`	$-168.00M	USD	2 Qtrs
Other, net	`OtherNoncashIncomeExpense`	$112.00M	USD	2 Qtrs
Other, net	`OtherNoncashIncomeExpense`	$112.00M	USD	2 Qtrs
Other, net	`OtherNoncashIncomeExpense`	$-28.00M	USD	2 Qtrs
Other, net	`OtherNoncashIncomeExpense`	$-28.00M	USD	2 Qtrs
Receivables, net	`IncreaseDecreaseInReceivables`	$704.00M	USD	2 Qtrs
Receivables, net	`IncreaseDecreaseInReceivables`	$704.00M	USD	2 Qtrs
Receivables, net	`IncreaseDecreaseInReceivables`	$959.00M	USD	2 Qtrs
Receivables, net	`IncreaseDecreaseInReceivables`	$959.00M	USD	2 Qtrs
Accounts payable and accrued liabilities	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-515.00M	USD	2 Qtrs
Accounts payable and accrued liabilities	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-515.00M	USD	2 Qtrs
Accounts payable and accrued liabilities	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-251.00M	USD	2 Qtrs
Accounts payable and accrued liabilities	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-251.00M	USD	2 Qtrs
Accelerating Aon United Program liabilities	`IncreaseDecreaseInRestructuringReserve`	$61.00M	USD	2 Qtrs
Accelerating Aon United Program liabilities	`IncreaseDecreaseInRestructuringReserve`	$61.00M	USD	2 Qtrs
Accelerating Aon United Program liabilities	`IncreaseDecreaseInRestructuringReserve`	-	USD	2 Qtrs
Accelerating Aon United Program liabilities	`IncreaseDecreaseInRestructuringReserve`	-	USD	2 Qtrs
Current income taxes	`IncreaseDecreaseInAccruedIncomeTaxesPayable`	$60.00M	USD	2 Qtrs
Current income taxes	`IncreaseDecreaseInAccruedIncomeTaxesPayable`	$60.00M	USD	2 Qtrs
Current income taxes	`IncreaseDecreaseInAccruedIncomeTaxesPayable`	$53.00M	USD	2 Qtrs
Current income taxes	`IncreaseDecreaseInAccruedIncomeTaxesPayable`	$53.00M	USD	2 Qtrs
Pension, other postretirement and postemployment liabilities	`IncreaseDecreaseInPensionAndPostretirementObligations`	$-17.00M	USD	2 Qtrs
Pension, other postretirement and postemployment liabilities	`IncreaseDecreaseInPensionAndPostretirementObligations`	$-17.00M	USD	2 Qtrs
Pension, other postretirement and postemployment liabilities	`IncreaseDecreaseInPensionAndPostretirementObligations`	$-3.00M	USD	2 Qtrs
Pension, other postretirement and postemployment liabilities	`IncreaseDecreaseInPensionAndPostretirementObligations`	$-3.00M	USD	2 Qtrs
Other assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-433.00M	USD	2 Qtrs
Other assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-433.00M	USD	2 Qtrs
Other assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-308.00M	USD	2 Qtrs
Other assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-308.00M	USD	2 Qtrs
Cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$822.00M	USD	2 Qtrs
Cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$822.00M	USD	2 Qtrs
Cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$1.13B	USD	2 Qtrs
Cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$1.13B	USD	2 Qtrs
Proceeds from investments	`ProceedsFromSaleAndMaturityOfOtherInvestments`	$146.00M	USD	2 Qtrs
Proceeds from investments	`ProceedsFromSaleAndMaturityOfOtherInvestments`	$146.00M	USD	2 Qtrs
Proceeds from investments	`ProceedsFromSaleAndMaturityOfOtherInvestments`	$54.00M	USD	2 Qtrs
Proceeds from investments	`ProceedsFromSaleAndMaturityOfOtherInvestments`	$54.00M	USD	2 Qtrs
Purchases of investments	`PaymentsToAcquireOtherInvestments`	$91.00M	USD	2 Qtrs
Purchases of investments	`PaymentsToAcquireOtherInvestments`	$91.00M	USD	2 Qtrs
Purchases of investments	`PaymentsToAcquireOtherInvestments`	$29.00M	USD	2 Qtrs
Purchases of investments	`PaymentsToAcquireOtherInvestments`	$29.00M	USD	2 Qtrs
Net sales of short-term investments - non fiduciary	`PaymentsForProceedsFromMarketableSecurities`	$-255.00M	USD	2 Qtrs
Net sales of short-term investments - non fiduciary	`PaymentsForProceedsFromMarketableSecurities`	$-255.00M	USD	2 Qtrs
Net sales of short-term investments - non fiduciary	`PaymentsForProceedsFromMarketableSecurities`	$-189.00M	USD	2 Qtrs
Net sales of short-term investments - non fiduciary	`PaymentsForProceedsFromMarketableSecurities`	$-189.00M	USD	2 Qtrs
Acquisition of businesses, net of cash and funds held on behalf of clients	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$2.78B	USD	2 Qtrs
Acquisition of businesses, net of cash and funds held on behalf of clients	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$2.78B	USD	2 Qtrs
Acquisition of businesses, net of cash and funds held on behalf of clients	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$8.00M	USD	2 Qtrs
Acquisition of businesses, net of cash and funds held on behalf of clients	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$8.00M	USD	2 Qtrs
Sale of businesses, net of cash and funds held on behalf of clients	`ProceedsFromDivestitureOfBusinessesNetOfCashDivested`	$352.00M	USD	2 Qtrs
Sale of businesses, net of cash and funds held on behalf of clients	`ProceedsFromDivestitureOfBusinessesNetOfCashDivested`	$352.00M	USD	2 Qtrs
Sale of businesses, net of cash and funds held on behalf of clients	`ProceedsFromDivestitureOfBusinessesNetOfCashDivested`	$1.00M	USD	2 Qtrs
Sale of businesses, net of cash and funds held on behalf of clients	`ProceedsFromDivestitureOfBusinessesNetOfCashDivested`	$1.00M	USD	2 Qtrs
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$101.00M	USD	2 Qtrs
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$101.00M	USD	2 Qtrs
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$145.00M	USD	2 Qtrs
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$145.00M	USD	2 Qtrs
Cash provided by (used for) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$128.00M	USD	2 Qtrs
Cash provided by (used for) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$128.00M	USD	2 Qtrs
Cash provided by (used for) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-2.29B	USD	2 Qtrs
Cash provided by (used for) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-2.29B	USD	2 Qtrs
Share repurchase	`PaymentsForRepurchaseOfEquity`	$1.10B	USD	2 Qtrs
Share repurchase	`PaymentsForRepurchaseOfEquity`	$1.10B	USD	2 Qtrs
Share repurchase	`PaymentsForRepurchaseOfEquity`	$500.00M	USD	2 Qtrs
Share repurchase	`PaymentsForRepurchaseOfEquity`	$500.00M	USD	2 Qtrs
Proceeds from issuance of shares	`ProceedsFromIssuanceOfCommonStock`	$33.00M	USD	2 Qtrs
Proceeds from issuance of shares	`ProceedsFromIssuanceOfCommonStock`	$33.00M	USD	2 Qtrs
Proceeds from issuance of shares	`ProceedsFromIssuanceOfCommonStock`	$27.00M	USD	2 Qtrs
Proceeds from issuance of shares	`ProceedsFromIssuanceOfCommonStock`	$27.00M	USD	2 Qtrs
Cash paid for employee taxes on withholding shares	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$176.00M	USD	2 Qtrs
Cash paid for employee taxes on withholding shares	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$176.00M	USD	2 Qtrs
Cash paid for employee taxes on withholding shares	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$216.00M	USD	2 Qtrs
Cash paid for employee taxes on withholding shares	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$216.00M	USD	2 Qtrs
Commercial paper issuances, net of repayments	`ProceedsFromRepaymentsOfCommercialPaper`	$-591.00M	USD	2 Qtrs
Commercial paper issuances, net of repayments	`ProceedsFromRepaymentsOfCommercialPaper`	$-591.00M	USD	2 Qtrs
Commercial paper issuances, net of repayments	`ProceedsFromRepaymentsOfCommercialPaper`	$-217.00M	USD	2 Qtrs
Commercial paper issuances, net of repayments	`ProceedsFromRepaymentsOfCommercialPaper`	$-217.00M	USD	2 Qtrs
Issuance of debt	`ProceedsFromIssuanceOfLongTermDebt`	$7.93B	USD	2 Qtrs
Issuance of debt	`ProceedsFromIssuanceOfLongTermDebt`	$7.93B	USD	2 Qtrs
Issuance of debt	`ProceedsFromIssuanceOfLongTermDebt`	$744.00M	USD	2 Qtrs
Issuance of debt	`ProceedsFromIssuanceOfLongTermDebt`	$744.00M	USD	2 Qtrs
Repayment of debt	`RepaymentsOfLongTermDebt`	$4.33B	USD	2 Qtrs
Repayment of debt	`RepaymentsOfLongTermDebt`	$4.33B	USD	2 Qtrs
Repayment of debt	`RepaymentsOfLongTermDebt`	-	USD	2 Qtrs
Repayment of debt	`RepaymentsOfLongTermDebt`	-	USD	2 Qtrs
Increase in fiduciary liabilities, net of fiduciary receivables	`IncreaseInFiduciaryLiabilitiesNetOfFiduciaryReceivables`	$999.00M	USD	2 Qtrs
Increase in fiduciary liabilities, net of fiduciary receivables	`IncreaseInFiduciaryLiabilitiesNetOfFiduciaryReceivables`	$999.00M	USD	2 Qtrs
Increase in fiduciary liabilities, net of fiduciary receivables	`IncreaseInFiduciaryLiabilitiesNetOfFiduciaryReceivables`	$283.00M	USD	2 Qtrs
Increase in fiduciary liabilities, net of fiduciary receivables	`IncreaseInFiduciaryLiabilitiesNetOfFiduciaryReceivables`	$283.00M	USD	2 Qtrs
Cash dividends to shareholders	`PaymentsOfDividendsCommonStock`	$241.00M	USD	2 Qtrs
Cash dividends to shareholders	`PaymentsOfDividendsCommonStock`	$241.00M	USD	2 Qtrs
Cash dividends to shareholders	`PaymentsOfDividendsCommonStock`	$269.00M	USD	2 Qtrs
Cash dividends to shareholders	`PaymentsOfDividendsCommonStock`	$269.00M	USD	2 Qtrs
Redeemable and non-redeemable noncontrolling interests, and other financing activities	`ProceedsFromPaymentsForNoncontrollingInterestsAndOtherFinancingActivities`	$-41.00M	USD	2 Qtrs
Redeemable and non-redeemable noncontrolling interests, and other financing activities	`ProceedsFromPaymentsForNoncontrollingInterestsAndOtherFinancingActivities`	$-41.00M	USD	2 Qtrs
Redeemable and non-redeemable noncontrolling interests, and other financing activities	`ProceedsFromPaymentsForNoncontrollingInterestsAndOtherFinancingActivities`	$-108.00M	USD	2 Qtrs
Redeemable and non-redeemable noncontrolling interests, and other financing activities	`ProceedsFromPaymentsForNoncontrollingInterestsAndOtherFinancingActivities`	$-108.00M	USD	2 Qtrs
Cash provided by (used for) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-39.00M	USD	2 Qtrs
Cash provided by (used for) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-39.00M	USD	2 Qtrs
Cash provided by (used for) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$2.26B	USD	2 Qtrs
Cash provided by (used for) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$2.26B	USD	2 Qtrs
Effect of exchange rates on cash and cash equivalents and funds held on behalf of clients	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$203.00M	USD	2 Qtrs
Effect of exchange rates on cash and cash equivalents and funds held on behalf of clients	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$203.00M	USD	2 Qtrs
Effect of exchange rates on cash and cash equivalents and funds held on behalf of clients	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-202.00M	USD	2 Qtrs
Effect of exchange rates on cash and cash equivalents and funds held on behalf of clients	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-202.00M	USD	2 Qtrs
Net increase in cash and cash equivalents and funds held on behalf of clients	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$599.00M	USD	2 Qtrs
Net increase in cash and cash equivalents and funds held on behalf of clients	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$599.00M	USD	2 Qtrs
Net increase in cash and cash equivalents and funds held on behalf of clients	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$1.42B	USD	2 Qtrs
Net increase in cash and cash equivalents and funds held on behalf of clients	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$1.42B	USD	2 Qtrs
Cash, cash equivalents and funds held on behalf of clients at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$8.50B	USD	Point-in-time
Cash, cash equivalents and funds held on behalf of clients at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$8.50B	USD	Point-in-time
Cash, cash equivalents and funds held on behalf of clients at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$7.08B	USD	Point-in-time
Cash, cash equivalents and funds held on behalf of clients at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$7.08B	USD	Point-in-time
Cash, cash equivalents and funds held on behalf of clients at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$7.72B	USD	Point-in-time
Cash, cash equivalents and funds held on behalf of clients at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$7.72B	USD	Point-in-time
Cash, cash equivalents and funds held on behalf of clients at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$8.32B	USD	Point-in-time
Cash, cash equivalents and funds held on behalf of clients at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$8.32B	USD	Point-in-time
Cash, cash equivalents and funds held on behalf of clients at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$8.50B	USD	Point-in-time
Cash, cash equivalents and funds held on behalf of clients at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$8.50B	USD	Point-in-time
Cash, cash equivalents and funds held on behalf of clients at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$7.08B	USD	Point-in-time
Cash, cash equivalents and funds held on behalf of clients at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$7.08B	USD	Point-in-time
Cash, cash equivalents and funds held on behalf of clients at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$7.72B	USD	Point-in-time
Cash, cash equivalents and funds held on behalf of clients at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$7.72B	USD	Point-in-time
Cash, cash equivalents and funds held on behalf of clients at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$8.32B	USD	Point-in-time
Cash, cash equivalents and funds held on behalf of clients at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$8.32B	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$974.00M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$974.00M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$778.00M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$778.00M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$952.00M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$952.00M	USD	Point-in-time
Cash and cash equivalents and funds held on behalf of clients classified as held for sale	`DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents`	$38.00M	USD	Point-in-time
Cash and cash equivalents and funds held on behalf of clients classified as held for sale	`DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents`	$38.00M	USD	Point-in-time
Cash and cash equivalents and funds held on behalf of clients classified as held for sale	`DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents`	$9.00M	USD	Point-in-time
Cash and cash equivalents and funds held on behalf of clients classified as held for sale	`DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents`	$9.00M	USD	Point-in-time
Funds held on behalf of clients	`FundsHeldForClients`	$7.54B	USD	Point-in-time
Funds held on behalf of clients	`FundsHeldForClients`	$7.54B	USD	Point-in-time
Funds held on behalf of clients	`FundsHeldForClients`	$7.31B	USD	Point-in-time
Funds held on behalf of clients	`FundsHeldForClients`	$7.31B	USD	Point-in-time
Total cash and cash equivalents and funds held on behalf of clients	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$8.50B	USD	Point-in-time
Total cash and cash equivalents and funds held on behalf of clients	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$8.50B	USD	Point-in-time
Total cash and cash equivalents and funds held on behalf of clients	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$7.08B	USD	Point-in-time
Total cash and cash equivalents and funds held on behalf of clients	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$7.08B	USD	Point-in-time
Total cash and cash equivalents and funds held on behalf of clients	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$7.72B	USD	Point-in-time
Total cash and cash equivalents and funds held on behalf of clients	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$7.72B	USD	Point-in-time
Total cash and cash equivalents and funds held on behalf of clients	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$8.32B	USD	Point-in-time
Total cash and cash equivalents and funds held on behalf of clients	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$8.32B	USD	Point-in-time
Interest paid	`InterestPaidNet`	$256.00M	USD	2 Qtrs
Interest paid	`InterestPaidNet`	$256.00M	USD	2 Qtrs
Interest paid	`InterestPaidNet`	$220.00M	USD	2 Qtrs
Interest paid	`InterestPaidNet`	$220.00M	USD	2 Qtrs
Income taxes paid, net of refunds	`IncomeTaxesPaidNet`	$461.00M	USD	2 Qtrs
Income taxes paid, net of refunds	`IncomeTaxesPaidNet`	$461.00M	USD	2 Qtrs
Income taxes paid, net of refunds	`IncomeTaxesPaidNet`	$553.00M	USD	2 Qtrs
Income taxes paid, net of refunds	`IncomeTaxesPaidNet`	$553.00M	USD	2 Qtrs

Stockholders Equity 154 line items

Line Item	Tag	Value	Unit	Period
Dividends (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.56	USD	1 Quarter
Dividends (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.56	USD	1 Quarter
Dividends (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.61	USD	1 Quarter
Dividends (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.61	USD	1 Quarter
Dividends (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.61	USD	1 Quarter
Dividends (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.61	USD	1 Quarter
Dividends (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.68	USD	1 Quarter
Dividends (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.68	USD	1 Quarter
Net income	`ProfitLoss`	$1.65B	USD	2 Qtrs
Net income	`ProfitLoss`	$1.65B	USD	2 Qtrs
Net income	`ProfitLoss`	$575.00M	USD	1 Quarter
Net income	`ProfitLoss`	$575.00M	USD	1 Quarter
Net income	`ProfitLoss`	$538.00M	USD	1 Quarter
Net income	`ProfitLoss`	$538.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.63B	USD	2 Qtrs
Net income	`ProfitLoss`	$1.63B	USD	2 Qtrs
Net income	`ProfitLoss`	$1.09B	USD	1 Quarter
Net income	`ProfitLoss`	$1.09B	USD	1 Quarter
Net income	`ProfitLoss`	$1.08B	USD	1 Quarter
Net income	`ProfitLoss`	$1.08B	USD	1 Quarter
Net income related to redeemable noncontrolling interest	`NetIncomeLossAttributableToRedeemableNoncontrollingInterest`	$2.00M	USD	2 Qtrs
Net income related to redeemable noncontrolling interest	`NetIncomeLossAttributableToRedeemableNoncontrollingInterest`	$2.00M	USD	2 Qtrs
Beginning balance (in shares)	`CommonStockSharesIssued`	198.60M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesIssued`	198.60M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesIssued`	217.20M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesIssued`	217.20M	shares	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.03B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.03B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-429.00M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-429.00M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-28.00M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-28.00M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$58.00M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$58.00M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$162.00M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$162.00M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-742.00M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-742.00M	USD	Point-in-time
Net income	`ProfitLoss`	$1.65B	USD	2 Qtrs
Net income	`ProfitLoss`	$1.65B	USD	2 Qtrs
Net income	`ProfitLoss`	$575.00M	USD	1 Quarter
Net income	`ProfitLoss`	$575.00M	USD	1 Quarter
Net income	`ProfitLoss`	$538.00M	USD	1 Quarter
Net income	`ProfitLoss`	$538.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.63B	USD	2 Qtrs
Net income	`ProfitLoss`	$1.63B	USD	2 Qtrs
Net income	`ProfitLoss`	$1.09B	USD	1 Quarter
Net income	`ProfitLoss`	$1.09B	USD	1 Quarter
Net income	`ProfitLoss`	$1.08B	USD	1 Quarter
Net income	`ProfitLoss`	$1.08B	USD	1 Quarter
Net income	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$536.00M	USD	1 Quarter
Net income	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$536.00M	USD	1 Quarter
Shares issued - NFP Transaction	`StockIssuedDuringPeriodValueAcquisitions`	$5.88B	USD	1 Quarter
Shares issued - NFP Transaction	`StockIssuedDuringPeriodValueAcquisitions`	$5.88B	USD	1 Quarter
Shares issued - employee stock compensation plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$-132.00M	USD	1 Quarter
Shares issued - employee stock compensation plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$-132.00M	USD	1 Quarter
Shares issued - employee stock compensation plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$-104.00M	USD	1 Quarter
Shares issued - employee stock compensation plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$-104.00M	USD	1 Quarter
Shares issued - employee stock compensation plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$-45.00M	USD	1 Quarter
Shares issued - employee stock compensation plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$-45.00M	USD	1 Quarter
Shares issued - employee stock compensation plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$-52.00M	USD	1 Quarter
Shares issued - employee stock compensation plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$-52.00M	USD	1 Quarter
Shares repurchased	`StockRepurchasedDuringPeriodValue`	$550.00M	USD	1 Quarter
Shares repurchased	`StockRepurchasedDuringPeriodValue`	$550.00M	USD	1 Quarter
Shares repurchased	`StockRepurchasedDuringPeriodValue`	$250.00M	USD	1 Quarter
Shares repurchased	`StockRepurchasedDuringPeriodValue`	$250.00M	USD	1 Quarter
Shares repurchased	`StockRepurchasedDuringPeriodValue`	$550.00M	USD	1 Quarter
Shares repurchased	`StockRepurchasedDuringPeriodValue`	$550.00M	USD	1 Quarter
Shares repurchased	`StockRepurchasedDuringPeriodValue`	$250.00M	USD	1 Quarter
Shares repurchased	`StockRepurchasedDuringPeriodValue`	$250.00M	USD	1 Quarter
Share-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$127.00M	USD	1 Quarter
Share-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$127.00M	USD	1 Quarter
Share-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$130.00M	USD	1 Quarter
Share-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$130.00M	USD	1 Quarter
Share-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$99.00M	USD	1 Quarter
Share-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$99.00M	USD	1 Quarter
Share-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$117.00M	USD	1 Quarter
Share-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$117.00M	USD	1 Quarter
Dividends to shareholders	`DividendsCommonStockCash`	$122.00M	USD	1 Quarter
Dividends to shareholders	`DividendsCommonStockCash`	$122.00M	USD	1 Quarter
Dividends to shareholders	`DividendsCommonStockCash`	$127.00M	USD	1 Quarter
Dividends to shareholders	`DividendsCommonStockCash`	$127.00M	USD	1 Quarter
Dividends to shareholders	`DividendsCommonStockCash`	$115.00M	USD	1 Quarter
Dividends to shareholders	`DividendsCommonStockCash`	$115.00M	USD	1 Quarter
Dividends to shareholders	`DividendsCommonStockCash`	$148.00M	USD	1 Quarter
Dividends to shareholders	`DividendsCommonStockCash`	$148.00M	USD	1 Quarter
Net change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$3.00M	USD	1 Quarter
Net change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$3.00M	USD	1 Quarter
Net change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$75.00M	USD	1 Quarter
Net change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$75.00M	USD	1 Quarter
Net change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$76.00M	USD	2 Qtrs
Net change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$76.00M	USD	2 Qtrs
Net change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$1.00M	USD	1 Quarter
Net change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$1.00M	USD	1 Quarter
Net change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$11.00M	USD	2 Qtrs
Net change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$11.00M	USD	2 Qtrs
Net change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$8.00M	USD	1 Quarter
Net change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$8.00M	USD	1 Quarter
Net foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-88.00M	USD	1 Quarter
Net foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-88.00M	USD	1 Quarter
Net foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$54.00M	USD	1 Quarter
Net foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$54.00M	USD	1 Quarter
Net foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$174.00M	USD	1 Quarter
Net foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$174.00M	USD	1 Quarter
Net foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-220.00M	USD	2 Qtrs
Net foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-220.00M	USD	2 Qtrs
Net foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$228.00M	USD	2 Qtrs
Net foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$228.00M	USD	2 Qtrs
Net foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-132.00M	USD	1 Quarter
Net foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-132.00M	USD	1 Quarter
Net postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-39.00M	USD	2 Qtrs
Net postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-39.00M	USD	2 Qtrs
Net postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-13.00M	USD	1 Quarter
Net postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-13.00M	USD	1 Quarter
Net postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-26.00M	USD	1 Quarter
Net postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-26.00M	USD	1 Quarter
Net postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-46.00M	USD	2 Qtrs
Net postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-46.00M	USD	2 Qtrs
Net postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-24.00M	USD	1 Quarter
Net postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-24.00M	USD	1 Quarter
Net postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-22.00M	USD	1 Quarter
Net postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-22.00M	USD	1 Quarter
Purchases of subsidiary shares from nonredeemable noncontrolling interests	`MinorityInterestDecreaseFromRedemptions`	$-86.00M	USD	1 Quarter
Purchases of subsidiary shares from nonredeemable noncontrolling interests	`MinorityInterestDecreaseFromRedemptions`	$-86.00M	USD	1 Quarter
Purchases of subsidiary shares from nonredeemable noncontrolling interests	`MinorityInterestDecreaseFromRedemptions`	$1.00M	USD	1 Quarter
Purchases of subsidiary shares from nonredeemable noncontrolling interests	`MinorityInterestDecreaseFromRedemptions`	$1.00M	USD	1 Quarter
Purchases of subsidiary shares from nonredeemable noncontrolling interests	`MinorityInterestDecreaseFromRedemptions`	$2.00M	USD	1 Quarter
Purchases of subsidiary shares from nonredeemable noncontrolling interests	`MinorityInterestDecreaseFromRedemptions`	$2.00M	USD	1 Quarter
Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$1.00M	USD	1 Quarter
Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$1.00M	USD	1 Quarter
Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$45.00M	USD	1 Quarter
Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$45.00M	USD	1 Quarter
Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$35.00M	USD	1 Quarter
Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$35.00M	USD	1 Quarter
Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$1.00M	USD	1 Quarter
Dividends paid to nonredeemable noncontrolling interests on subsidiary common stock	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$1.00M	USD	1 Quarter
Adjustments to redeemable noncontrolling interests	`MinorityInterestChangeInRedemptionValue`	$-13.00M	USD	1 Quarter
Adjustments to redeemable noncontrolling interests	`MinorityInterestChangeInRedemptionValue`	$-13.00M	USD	1 Quarter
Ending balance (in shares)	`CommonStockSharesIssued`	198.60M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesIssued`	198.60M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesIssued`	217.20M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesIssued`	217.20M	shares	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.03B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.03B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-429.00M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-429.00M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-28.00M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-28.00M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$58.00M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$58.00M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$162.00M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$162.00M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-742.00M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-742.00M	USD	Point-in-time

Comprehensive Income 96 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$1.65B	USD	2 Qtrs
Net income	`ProfitLoss`	$1.65B	USD	2 Qtrs
Net income	`ProfitLoss`	$575.00M	USD	1 Quarter
Net income	`ProfitLoss`	$575.00M	USD	1 Quarter
Net income	`ProfitLoss`	$538.00M	USD	1 Quarter
Net income	`ProfitLoss`	$538.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.63B	USD	2 Qtrs
Net income	`ProfitLoss`	$1.63B	USD	2 Qtrs
Net income	`ProfitLoss`	$1.09B	USD	1 Quarter
Net income	`ProfitLoss`	$1.09B	USD	1 Quarter
Net income	`ProfitLoss`	$1.08B	USD	1 Quarter
Net income	`ProfitLoss`	$1.08B	USD	1 Quarter
Less: Net income attributable to redeemable and non-redeemable noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$36.00M	USD	2 Qtrs
Less: Net income attributable to redeemable and non-redeemable noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$36.00M	USD	2 Qtrs
Less: Net income attributable to redeemable and non-redeemable noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$15.00M	USD	1 Quarter
Less: Net income attributable to redeemable and non-redeemable noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$15.00M	USD	1 Quarter
Less: Net income attributable to redeemable and non-redeemable noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$44.00M	USD	2 Qtrs
Less: Net income attributable to redeemable and non-redeemable noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$44.00M	USD	2 Qtrs
Less: Net income attributable to redeemable and non-redeemable noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$14.00M	USD	1 Quarter
Less: Net income attributable to redeemable and non-redeemable noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$14.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLoss`	$1.59B	USD	2 Qtrs
Net income attributable to Aon shareholders	`NetIncomeLoss`	$1.59B	USD	2 Qtrs
Net income attributable to Aon shareholders	`NetIncomeLoss`	$524.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLoss`	$524.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLoss`	$1.61B	USD	2 Qtrs
Net income attributable to Aon shareholders	`NetIncomeLoss`	$1.61B	USD	2 Qtrs
Net income attributable to Aon shareholders	`NetIncomeLoss`	$560.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLoss`	$560.00M	USD	1 Quarter
Change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$3.00M	USD	1 Quarter
Change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$3.00M	USD	1 Quarter
Change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$75.00M	USD	1 Quarter
Change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$75.00M	USD	1 Quarter
Change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$76.00M	USD	2 Qtrs
Change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$76.00M	USD	2 Qtrs
Change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$1.00M	USD	1 Quarter
Change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$1.00M	USD	1 Quarter
Change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$11.00M	USD	2 Qtrs
Change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$11.00M	USD	2 Qtrs
Change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$8.00M	USD	1 Quarter
Change in fair value of financial instruments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$8.00M	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-88.00M	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-88.00M	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$54.00M	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$54.00M	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$174.00M	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$174.00M	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-220.00M	USD	2 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-220.00M	USD	2 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$228.00M	USD	2 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$228.00M	USD	2 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-132.00M	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-132.00M	USD	1 Quarter
Postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-39.00M	USD	2 Qtrs
Postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-39.00M	USD	2 Qtrs
Postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-13.00M	USD	1 Quarter
Postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-13.00M	USD	1 Quarter
Postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-26.00M	USD	1 Quarter
Postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-26.00M	USD	1 Quarter
Postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-46.00M	USD	2 Qtrs
Postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-46.00M	USD	2 Qtrs
Postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-24.00M	USD	1 Quarter
Postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-24.00M	USD	1 Quarter
Postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-22.00M	USD	1 Quarter
Postretirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-22.00M	USD	1 Quarter
Total other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-105.00M	USD	2 Qtrs
Total other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-105.00M	USD	2 Qtrs
Total other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$206.00M	USD	1 Quarter
Total other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$206.00M	USD	1 Quarter
Total other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$285.00M	USD	2 Qtrs
Total other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$285.00M	USD	2 Qtrs
Total other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-74.00M	USD	1 Quarter
Total other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-74.00M	USD	1 Quarter
Less: Other comprehensive income attributable to noncontrolling interests	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Less: Other comprehensive income attributable to noncontrolling interests	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Less: Other comprehensive income attributable to noncontrolling interests	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	-	USD	2 Qtrs
Less: Other comprehensive income attributable to noncontrolling interests	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	-	USD	2 Qtrs
Less: Other comprehensive income attributable to noncontrolling interests	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Less: Other comprehensive income attributable to noncontrolling interests	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Less: Other comprehensive income attributable to noncontrolling interests	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	-	USD	2 Qtrs
Less: Other comprehensive income attributable to noncontrolling interests	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	-	USD	2 Qtrs
Total other comprehensive income (loss) attributable to Aon shareholders	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-105.00M	USD	2 Qtrs
Total other comprehensive income (loss) attributable to Aon shareholders	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-105.00M	USD	2 Qtrs
Total other comprehensive income (loss) attributable to Aon shareholders	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-74.00M	USD	1 Quarter
Total other comprehensive income (loss) attributable to Aon shareholders	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-74.00M	USD	1 Quarter
Total other comprehensive income (loss) attributable to Aon shareholders	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$206.00M	USD	1 Quarter
Total other comprehensive income (loss) attributable to Aon shareholders	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$206.00M	USD	1 Quarter
Total other comprehensive income (loss) attributable to Aon shareholders	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$285.00M	USD	2 Qtrs
Total other comprehensive income (loss) attributable to Aon shareholders	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$285.00M	USD	2 Qtrs
Comprehensive income attributable to Aon shareholders	`ComprehensiveIncomeNetOfTax`	$1.49B	USD	2 Qtrs
Comprehensive income attributable to Aon shareholders	`ComprehensiveIncomeNetOfTax`	$1.49B	USD	2 Qtrs
Comprehensive income attributable to Aon shareholders	`ComprehensiveIncomeNetOfTax`	$766.00M	USD	1 Quarter
Comprehensive income attributable to Aon shareholders	`ComprehensiveIncomeNetOfTax`	$766.00M	USD	1 Quarter
Comprehensive income attributable to Aon shareholders	`ComprehensiveIncomeNetOfTax`	$450.00M	USD	1 Quarter
Comprehensive income attributable to Aon shareholders	`ComprehensiveIncomeNetOfTax`	$450.00M	USD	1 Quarter
Comprehensive income attributable to Aon shareholders	`ComprehensiveIncomeNetOfTax`	$1.90B	USD	2 Qtrs
Comprehensive income attributable to Aon shareholders	`ComprehensiveIncomeNetOfTax`	$1.90B	USD	2 Qtrs

Data is extracted from SEC EDGAR XBRL filings. Values shown are as reported in the filing.