10-K Filing

AON PLC CIK: 315293 FY 2014

Filing Information

Form Type	10-K
Accession Number	`0001628280-15-000950`
Period End Date	20141231
Filing Date	20150224
Fiscal Year	2014
Fiscal Period	FY
XBRL Instance	aon-20141231.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 76 Income Statement 132 Cash Flow Statement 124 Stockholders Equity 61 Comprehensive Income 57

Balance Sheet 76 line items

Line Item	Tag	Value	Unit	Period
Ordinary shares, nominal or par value	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Ordinary shares, nominal or par value	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Ordinary shares, nominal or par value	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Ordinary shares, Authorized shares	`CommonStockSharesAuthorized`	750.00M	shares	Point-in-time
Ordinary shares, Authorized shares	`CommonStockSharesAuthorized`	750.00M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$477.00M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$374.00M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$272.00M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$291.00M	USD	Point-in-time
Ordinary shares, issued shares	`CommonStockSharesIssued`	280.00M	shares	Point-in-time
Ordinary shares, issued shares	`CommonStockSharesIssued`	300.70M	shares	Point-in-time
Short-term investments	`ShortTermInvestments`	$394.00M	USD	Point-in-time
Short-term investments	`ShortTermInvestments`	$523.00M	USD	Point-in-time
Receivables, net	`AccountsReceivableNetCurrent`	$2.81B	USD	Point-in-time
Receivables, net	`AccountsReceivableNetCurrent`	$2.90B	USD	Point-in-time
Fiduciary assets	`FiduciaryAssets`	$11.87B	USD	Point-in-time
Fiduciary assets	`FiduciaryAssets`	$11.64B	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$563.00M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$602.00M	USD	Point-in-time
Total Current Assets	`AssetsCurrent`	$15.82B	USD	Point-in-time
Total Current Assets	`AssetsCurrent`	$16.33B	USD	Point-in-time
Goodwill	`Goodwill`	$8.86B	USD	Point-in-time
Goodwill	`Goodwill`	$8.94B	USD	Point-in-time
Goodwill	`Goodwill`	$9.00B	USD	Point-in-time
Intangible assets, net	`IntangibleAssetsNetExcludingGoodwill`	$2.58B	USD	Point-in-time
Intangible assets, net	`IntangibleAssetsNetExcludingGoodwill`	$2.52B	USD	Point-in-time
Fixed assets, net	`PropertyPlantAndEquipmentNet`	$765.00M	USD	Point-in-time
Fixed assets, net	`PropertyPlantAndEquipmentNet`	$791.00M	USD	Point-in-time
Investments	`LongTermInvestments`	$143.00M	USD	Point-in-time
Investments	`LongTermInvestments`	$132.00M	USD	Point-in-time
Non-current deferred tax assets	`DeferredTaxAssetsNetNoncurrent`	$193.00M	USD	Point-in-time
Non-current deferred tax assets	`DeferredTaxAssetsNetNoncurrent`	$144.00M	USD	Point-in-time
Other non-current assets	`OtherAssetsNoncurrent`	$1.23B	USD	Point-in-time
Other non-current assets	`OtherAssetsNoncurrent`	$1.52B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$29.77B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$30.25B	USD	Point-in-time
Fiduciary liabilities	`FiduciaryLiabilities`	$11.87B	USD	Point-in-time
Fiduciary liabilities	`FiduciaryLiabilities`	$11.64B	USD	Point-in-time
Short-term debt and current portion of long-term debt	`DebtCurrent`	$783.00M	USD	Point-in-time
Short-term debt and current portion of long-term debt	`DebtCurrent`	$703.00M	USD	Point-in-time
Accounts payable and accrued liabilities	`AccountsPayableAndAccruedLiabilitiesCurrent`	$1.80B	USD	Point-in-time
Accounts payable and accrued liabilities	`AccountsPayableAndAccruedLiabilitiesCurrent`	$1.93B	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$788.00M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$906.00M	USD	Point-in-time
Total Current Liabilities	`LiabilitiesCurrent`	$15.01B	USD	Point-in-time
Total Current Liabilities	`LiabilitiesCurrent`	$15.41B	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$4.80B	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$3.69B	USD	Point-in-time
Non-current deferred tax liabilities	`DeferredTaxLiabilitiesNoncurrent`	$420.00M	USD	Point-in-time
Non-current deferred tax liabilities	`DeferredTaxLiabilitiesNoncurrent`	$313.00M	USD	Point-in-time
Pension, other post retirement, and post employment liabilities	`PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent`	$2.14B	USD	Point-in-time
Pension, other post retirement, and post employment liabilities	`PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent`	$1.61B	USD	Point-in-time
Other non-current liabilities	`OtherLiabilitiesNoncurrent`	$874.00M	USD	Point-in-time
Other non-current liabilities	`OtherLiabilitiesNoncurrent`	$932.00M	USD	Point-in-time
TOTAL LIABILITIES	`Liabilities`	$22.06B	USD	Point-in-time
TOTAL LIABILITIES	`Liabilities`	$23.14B	USD	Point-in-time
Ordinary shares - $0.01 nominal value Authorized: 750 shares (issued: 2014 - 280.0; 2013 - 300.7)	`CommonStockValue`	$3.00M	USD	Point-in-time
Ordinary shares - $0.01 nominal value Authorized: 750 shares (issued: 2014 - 280.0; 2013 - 300.7)	`CommonStockValue`	$3.00M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$5.10B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$4.79B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$5.73B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$4.61B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-2.37B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-2.61B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-2.37B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-3.13B	USD	Point-in-time
TOTAL AON SHAREHOLDERS' EQUITY	`StockholdersEquity`	$6.57B	USD	Point-in-time
TOTAL AON SHAREHOLDERS' EQUITY	`StockholdersEquity`	$8.14B	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$50.00M	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$60.00M	USD	Point-in-time
TOTAL EQUITY	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.63B	USD	Point-in-time
TOTAL EQUITY	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$8.12B	USD	Point-in-time
TOTAL EQUITY	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$7.80B	USD	Point-in-time
TOTAL EQUITY	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$8.20B	USD	Point-in-time
TOTAL LIABILITIES AND EQUITY	`LiabilitiesAndStockholdersEquity`	$30.25B	USD	Point-in-time
TOTAL LIABILITIES AND EQUITY	`LiabilitiesAndStockholdersEquity`	$29.77B	USD	Point-in-time

Income Statement 132 line items

Line Item	Tag	Value	Unit	Period
Commissions, fees and other	`CommissionsFeesAndOther`	$2.91B	USD	1 Quarter
Commissions, fees and other	`CommissionsFeesAndOther`	$2.89B	USD	1 Quarter
Commissions, fees and other	`CommissionsFeesAndOther`	$2.79B	USD	1 Quarter
Commissions, fees and other	`CommissionsFeesAndOther`	$11.79B	USD	Annual
Commissions, fees and other	`CommissionsFeesAndOther`	$3.20B	USD	1 Quarter
Commissions, fees and other	`CommissionsFeesAndOther`	$2.87B	USD	1 Quarter
Commissions, fees and other	`CommissionsFeesAndOther`	$2.91B	USD	1 Quarter
Commissions, fees and other	`CommissionsFeesAndOther`	$12.02B	USD	Annual
Commissions, fees and other	`CommissionsFeesAndOther`	$3.29B	USD	1 Quarter
Commissions, fees and other	`CommissionsFeesAndOther`	$11.48B	USD	Annual
Commissions, fees and other	`CommissionsFeesAndOther`	$2.94B	USD	1 Quarter
Fiduciary investment income	`FiduciaryInvestmentIncome`	$7.00M	USD	1 Quarter
Fiduciary investment income	`FiduciaryInvestmentIncome`	$38.00M	USD	Annual
Fiduciary investment income	`FiduciaryInvestmentIncome`	$7.00M	USD	1 Quarter
Fiduciary investment income	`FiduciaryInvestmentIncome`	$7.00M	USD	1 Quarter
Fiduciary investment income	`FiduciaryInvestmentIncome`	$6.00M	USD	1 Quarter
Fiduciary investment income	`FiduciaryInvestmentIncome`	$26.00M	USD	Annual
Fiduciary investment income	`FiduciaryInvestmentIncome`	$7.00M	USD	1 Quarter
Fiduciary investment income	`FiduciaryInvestmentIncome`	$6.00M	USD	1 Quarter
Fiduciary investment income	`FiduciaryInvestmentIncome`	$28.00M	USD	Annual
Fiduciary investment income	`FiduciaryInvestmentIncome`	$8.00M	USD	1 Quarter
Fiduciary investment income	`FiduciaryInvestmentIncome`	$6.00M	USD	1 Quarter
Total revenue	`Revenues`	$2.95B	USD	1 Quarter
Total revenue	`Revenues`	$2.88B	USD	1 Quarter
Total revenue	`Revenues`	$2.79B	USD	1 Quarter
Total revenue	`Revenues`	$11.51B	USD	Annual
Total revenue	`Revenues`	$2.92B	USD	1 Quarter
Total revenue	`Revenues`	$11.81B	USD	Annual
Total revenue	`Revenues`	$2.90B	USD	1 Quarter
Total revenue	`Revenues`	$3.30B	USD	1 Quarter
Total revenue	`Revenues`	$2.92B	USD	1 Quarter
Total revenue	`Revenues`	$12.04B	USD	Annual
Total revenue	`Revenues`	$3.21B	USD	1 Quarter
Compensation and benefits	`LaborAndRelatedExpense`	$6.71B	USD	Annual
Compensation and benefits	`LaborAndRelatedExpense`	$6.95B	USD	Annual
Compensation and benefits	`LaborAndRelatedExpense`	$7.01B	USD	Annual
Other general expenses	`OtherGeneralExpenses`	$3.06B	USD	Annual
Other general expenses	`OtherGeneralExpenses`	$3.20B	USD	Annual
Other general expenses	`OtherGeneralExpenses`	$3.21B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$10.08B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$9.92B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$10.14B	USD	Annual
Operating income	`OperatingIncomeLoss`	$469.00M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$1.97B	USD	Annual
Operating income	`OperatingIncomeLoss`	$1.60B	USD	Annual
Operating income	`OperatingIncomeLoss`	$410.00M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$1.67B	USD	Annual
Operating income	`OperatingIncomeLoss`	$445.00M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$417.00M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$515.00M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$635.00M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$382.00M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$364.00M	USD	1 Quarter
Interest income	`InvestmentIncomeInterestAndDividend`	$10.00M	USD	Annual
Interest income	`InvestmentIncomeInterestAndDividend`	$10.00M	USD	Annual
Interest income	`InvestmentIncomeInterestAndDividend`	$9.00M	USD	Annual
Interest expense	`InterestExpense`	$228.00M	USD	Annual
Interest expense	`InterestExpense`	$255.00M	USD	Annual
Interest expense	`InterestExpense`	$210.00M	USD	Annual
Other income	`OtherNonoperatingIncomeExpense`	$2.00M	USD	Annual
Other income	`OtherNonoperatingIncomeExpense`	$68.00M	USD	Annual
Other income	`OtherNonoperatingIncomeExpense`	$44.00M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$1.38B	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$1.54B	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$1.76B	USD	Annual
Income taxes	`IncomeTaxExpenseBenefit`	$390.00M	USD	Annual
Income taxes	`IncomeTaxExpenseBenefit`	$360.00M	USD	Annual
Income taxes	`IncomeTaxExpenseBenefit`	$334.00M	USD	Annual
Net income	`ProfitLoss`	$467.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.15B	USD	Annual
Net income	`ProfitLoss`	$336.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.02B	USD	Annual
Net income	`ProfitLoss`	$1.43B	USD	Annual
Net income	`ProfitLoss`	$264.00M	USD	1 Quarter
Net income	`ProfitLoss`	$360.00M	USD	1 Quarter
Net income	`ProfitLoss`	$313.00M	USD	1 Quarter
Net income	`ProfitLoss`	$315.00M	USD	1 Quarter
Net income	`ProfitLoss`	$272.00M	USD	1 Quarter
Net income	`ProfitLoss`	$252.00M	USD	1 Quarter
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$9.00M	USD	1 Quarter
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$8.00M	USD	1 Quarter
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$27.00M	USD	Annual
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$34.00M	USD	Annual
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$5.00M	USD	1 Quarter
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$11.00M	USD	1 Quarter
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$11.00M	USD	1 Quarter
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$8.00M	USD	1 Quarter
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$35.00M	USD	Annual
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$11.00M	USD	1 Quarter
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$6.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$325.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$355.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$261.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$993.00M	USD	Annual
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$1.40B	USD	Annual
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$304.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$241.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$256.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$309.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$459.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$1.11B	USD	Annual
Basic net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareBasic`	$3.57	USD	Annual
Basic net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareBasic`	$1.06	USD	1 Quarter
Basic net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareBasic`	$4.73	USD	Annual
Basic net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareBasic`	$1.07	USD	1 Quarter
Basic net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareBasic`	$3.02	USD	Annual
Basic net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareBasic`	$1.02	USD	1 Quarter
Basic net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareBasic`	$1.60	USD	1 Quarter
Diluted net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareDiluted`	$1.04	USD	1 Quarter
Diluted net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareDiluted`	$2.99	USD	Annual
Diluted net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareDiluted`	$1.06	USD	1 Quarter
Diluted net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareDiluted`	$1.56	USD	1 Quarter
Diluted net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareDiluted`	$3.53	USD	Annual
Diluted net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareDiluted`	$1.01	USD	1 Quarter
Diluted net income per share attributable to Aon shareholders (in dollars per share)	`EarningsPerShareDiluted`	$4.66	USD	Annual
Cash dividends per share paid on ordinary shares (in dollars per share)	`CommonStockDividendsPerShareCashPaid`	$0.25	USD	1 Quarter
Cash dividends per share paid on ordinary shares (in dollars per share)	`CommonStockDividendsPerShareCashPaid`	$0.18	USD	1 Quarter
Cash dividends per share paid on ordinary shares (in dollars per share)	`CommonStockDividendsPerShareCashPaid`	$0.18	USD	1 Quarter
Cash dividends per share paid on ordinary shares (in dollars per share)	`CommonStockDividendsPerShareCashPaid`	$0.62	USD	Annual
Cash dividends per share paid on ordinary shares (in dollars per share)	`CommonStockDividendsPerShareCashPaid`	$0.25	USD	1 Quarter
Cash dividends per share paid on ordinary shares (in dollars per share)	`CommonStockDividendsPerShareCashPaid`	$0.16	USD	1 Quarter
Cash dividends per share paid on ordinary shares (in dollars per share)	`CommonStockDividendsPerShareCashPaid`	$0.18	USD	1 Quarter
Cash dividends per share paid on ordinary shares (in dollars per share)	`CommonStockDividendsPerShareCashPaid`	$0.25	USD	1 Quarter
Cash dividends per share paid on ordinary shares (in dollars per share)	`CommonStockDividendsPerShareCashPaid`	$0.68	USD	Annual
Cash dividends per share paid on ordinary shares (in dollars per share)	`CommonStockDividendsPerShareCashPaid`	$0.92	USD	Annual
Cash dividends per share paid on ordinary shares (in dollars per share)	`CommonStockDividendsPerShareCashPaid`	$0.18	USD	1 Quarter
Weighted average ordinary shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	311.40M	shares	Annual
Weighted average ordinary shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	328.50M	shares	Annual
Weighted average ordinary shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	295.50M	shares	Annual
Weighted average ordinary shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	332.60M	shares	Annual
Weighted average ordinary shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	299.60M	shares	Annual
Weighted average ordinary shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	315.40M	shares	Annual

Cash Flow Statement 124 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$467.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.15B	USD	Annual
Net income	`ProfitLoss`	$336.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.02B	USD	Annual
Net income	`ProfitLoss`	$1.43B	USD	Annual
Net income	`ProfitLoss`	$264.00M	USD	1 Quarter
Net income	`ProfitLoss`	$360.00M	USD	1 Quarter
Net income	`ProfitLoss`	$313.00M	USD	1 Quarter
Net income	`ProfitLoss`	$315.00M	USD	1 Quarter
Net income	`ProfitLoss`	$272.00M	USD	1 Quarter
Net income	`ProfitLoss`	$252.00M	USD	1 Quarter
Gain from sales of businesses and investments, net	`DisposalGroupIncludingDiscontinuedOperationGainLossFromDisposal`	$65.00M	USD	Annual
Gain from sales of businesses and investments, net	`DisposalGroupIncludingDiscontinuedOperationGainLossFromDisposal`	$44.00M	USD	Annual
Gain from sales of businesses and investments, net	`DisposalGroupIncludingDiscontinuedOperationGainLossFromDisposal`	-	USD	Annual
Depreciation of fixed assets	`Depreciation`	$242.00M	USD	Annual
Depreciation of fixed assets	`Depreciation`	$232.00M	USD	Annual
Depreciation of fixed assets	`Depreciation`	$240.00M	USD	Annual
Amortization of intangible assets	`AdjustmentForAmortization`	$423.00M	USD	Annual
Amortization of intangible assets	`AdjustmentForAmortization`	$395.00M	USD	Annual
Amortization of intangible assets	`AdjustmentForAmortization`	$352.00M	USD	Annual
Share-based compensation expense	`ShareBasedCompensation`	$212.00M	USD	Annual
Share-based compensation expense	`ShareBasedCompensation`	$300.00M	USD	Annual
Share-based compensation expense	`ShareBasedCompensation`	$328.00M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxesAndTaxCredits`	$-95.00M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxesAndTaxCredits`	$-14.00M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxesAndTaxCredits`	$-135.00M	USD	Annual
Fiduciary receivables	`IncreaseDecreaseInFiduciaryReceivables`	$19.00M	USD	Annual
Fiduciary receivables	`IncreaseDecreaseInFiduciaryReceivables`	$1.40B	USD	Annual
Fiduciary receivables	`IncreaseDecreaseInFiduciaryReceivables`	$4.00M	USD	Annual
Short-term investments funds held on behalf of clients	`IncreaseDecreaseInClientFundsHeld`	$-156.00M	USD	Annual
Short-term investments funds held on behalf of clients	`IncreaseDecreaseInClientFundsHeld`	$403.00M	USD	Annual
Short-term investments funds held on behalf of clients	`IncreaseDecreaseInClientFundsHeld`	$-239.00M	USD	Annual
Fiduciary liabilities	`IncreaseDecreaseInFiduciaryLiabilities`	$422.00M	USD	Annual
Fiduciary liabilities	`IncreaseDecreaseInFiduciaryLiabilities`	$1.16B	USD	Annual
Fiduciary liabilities	`IncreaseDecreaseInFiduciaryLiabilities`	$-152.00M	USD	Annual
Receivables, net	`IncreaseDecreaseInReceivables`	$-141.00M	USD	Annual
Receivables, net	`IncreaseDecreaseInReceivables`	$25.00M	USD	Annual
Receivables, net	`IncreaseDecreaseInReceivables`	$-106.00M	USD	Annual
Accounts payable and accrued liabilities	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-37.00M	USD	Annual
Accounts payable and accrued liabilities	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$48.00M	USD	Annual
Accounts payable and accrued liabilities	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-81.00M	USD	Annual
Restructuring reserves	`IncreaseDecreaseInRestructuringReserve`	$15.00M	USD	Annual
Restructuring reserves	`IncreaseDecreaseInRestructuringReserve`	$-46.00M	USD	Annual
Restructuring reserves	`IncreaseDecreaseInRestructuringReserve`	$-83.00M	USD	Annual
Current income taxes	`IncreaseDecreaseInAccruedIncomeTaxesPayable`	$42.00M	USD	Annual
Current income taxes	`IncreaseDecreaseInAccruedIncomeTaxesPayable`	$185.00M	USD	Annual
Current income taxes	`IncreaseDecreaseInAccruedIncomeTaxesPayable`	$-116.00M	USD	Annual
Pension, other post-retirement and other post-employment liabilities	`IncreaseDecreaseInPensionAndPostretirementObligations`	$-340.00M	USD	Annual
Pension, other post-retirement and other post-employment liabilities	`IncreaseDecreaseInPensionAndPostretirementObligations`	$-502.00M	USD	Annual
Pension, other post-retirement and other post-employment liabilities	`IncreaseDecreaseInPensionAndPostretirementObligations`	$-585.00M	USD	Annual
Other assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$45.00M	USD	Annual
Other assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-4.00M	USD	Annual
Other assets and liabilities	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-43.00M	USD	Annual
CASH PROVIDED BY OPERATING ACTIVITIES	`NetCashProvidedByUsedInOperatingActivities`	$1.63B	USD	Annual
CASH PROVIDED BY OPERATING ACTIVITIES	`NetCashProvidedByUsedInOperatingActivities`	$1.64B	USD	Annual
CASH PROVIDED BY OPERATING ACTIVITIES	`NetCashProvidedByUsedInOperatingActivities`	$1.42B	USD	Annual
Proceeds from sale of long-term investments	`ProceedsFromSaleAndMaturityOfOtherInvestments`	$93.00M	USD	Annual
Proceeds from sale of long-term investments	`ProceedsFromSaleAndMaturityOfOtherInvestments`	$178.00M	USD	Annual
Proceeds from sale of long-term investments	`ProceedsFromSaleAndMaturityOfOtherInvestments`	$52.00M	USD	Annual
Purchases of long-term investments	`PaymentsToAcquireOtherInvestments`	$12.00M	USD	Annual
Purchases of long-term investments	`PaymentsToAcquireOtherInvestments`	$20.00M	USD	Annual
Purchases of long-term investments	`PaymentsToAcquireOtherInvestments`	$15.00M	USD	Annual
Net sales (purchases) of short-term investments non-fiduciary	`PaymentsForProceedsFromMarketableSecurities`	$-440.00M	USD	Annual
Net sales (purchases) of short-term investments non-fiduciary	`PaymentsForProceedsFromMarketableSecurities`	$174.00M	USD	Annual
Net sales (purchases) of short-term investments non-fiduciary	`PaymentsForProceedsFromMarketableSecurities`	$-110.00M	USD	Annual
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$54.00M	USD	Annual
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$479.00M	USD	Annual
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$162.00M	USD	Annual
Proceeds from sale of businesses	`ProceedsFromDivestitureOfBusinessesNetOfCashDivested`	$2.00M	USD	Annual
Proceeds from sale of businesses	`ProceedsFromDivestitureOfBusinessesNetOfCashDivested`	$40.00M	USD	Annual
Proceeds from sale of businesses	`ProceedsFromDivestitureOfBusinessesNetOfCashDivested`	$48.00M	USD	Annual
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$256.00M	USD	Annual
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$269.00M	USD	Annual
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$229.00M	USD	Annual
CASH (USED FOR) PROVIDED BY INVESTING ACTIVITIES	`NetCashProvidedByUsedInInvestingActivities`	$-545.00M	USD	Annual
CASH (USED FOR) PROVIDED BY INVESTING ACTIVITIES	`NetCashProvidedByUsedInInvestingActivities`	$-339.00M	USD	Annual
CASH (USED FOR) PROVIDED BY INVESTING ACTIVITIES	`NetCashProvidedByUsedInInvestingActivities`	$177.00M	USD	Annual
Share repurchase	`PaymentsForRepurchaseOfCommonStock`	$2.25B	USD	Annual
Share repurchase	`PaymentsForRepurchaseOfCommonStock`	$1.12B	USD	Annual
Share repurchase	`PaymentsForRepurchaseOfCommonStock`	$1.10B	USD	Annual
Issuance of shares for employee benefit plans	`ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions`	$65.00M	USD	Annual
Issuance of shares for employee benefit plans	`ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions`	$118.00M	USD	Annual
Issuance of shares for employee benefit plans	`ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions`	$98.00M	USD	Annual
Issuance of debt	`ProceedsFromIssuanceOfLongTermDebt`	$5.24B	USD	Annual
Issuance of debt	`ProceedsFromIssuanceOfLongTermDebt`	$733.00M	USD	Annual
Issuance of debt	`ProceedsFromIssuanceOfLongTermDebt`	$4.91B	USD	Annual
Repayment of debt	`RepaymentsOfLongTermDebt`	$1.08B	USD	Annual
Repayment of debt	`RepaymentsOfLongTermDebt`	$4.68B	USD	Annual
Repayment of debt	`RepaymentsOfLongTermDebt`	$3.92B	USD	Annual
Cash dividends to shareholders	`PaymentsOfDividendsCommonStock`	$273.00M	USD	Annual
Cash dividends to shareholders	`PaymentsOfDividendsCommonStock`	$212.00M	USD	Annual
Cash dividends to shareholders	`PaymentsOfDividendsCommonStock`	$204.00M	USD	Annual
Sales (purchases) of shares to (from) noncontrolling interests	`ProceedsFromPaymentsToMinorityShareholders`	$3.00M	USD	Annual
Sales (purchases) of shares to (from) noncontrolling interests	`ProceedsFromPaymentsToMinorityShareholders`	$-4.00M	USD	Annual
Sales (purchases) of shares to (from) noncontrolling interests	`ProceedsFromPaymentsToMinorityShareholders`	$-8.00M	USD	Annual
Dividends paid to noncontrolling interests	`PaymentsOfDividendsMinorityInterest`	$19.00M	USD	Annual
Dividends paid to noncontrolling interests	`PaymentsOfDividendsMinorityInterest`	$27.00M	USD	Annual
Dividends paid to noncontrolling interests	`PaymentsOfDividendsMinorityInterest`	$24.00M	USD	Annual
Proceeds from sale-leaseback	`SaleLeasebackTransactionNetProceeds`	-	USD	Annual
Proceeds from sale-leaseback	`SaleLeasebackTransactionNetProceeds`	-	USD	Annual
Proceeds from sale-leaseback	`SaleLeasebackTransactionNetProceeds`	$25.00M	USD	Annual
CASH USED FOR FINANCING ACTIVITIES	`NetCashProvidedByUsedInFinancingActivities`	$-1.02B	USD	Annual
CASH USED FOR FINANCING ACTIVITIES	`NetCashProvidedByUsedInFinancingActivities`	$-1.13B	USD	Annual
CASH USED FOR FINANCING ACTIVITIES	`NetCashProvidedByUsedInFinancingActivities`	$-1.59B	USD	Annual
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	`EffectOfExchangeRateOnCashAndCashEquivalents`	$9.00M	USD	Annual
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	`EffectOfExchangeRateOnCashAndCashEquivalents`	$-67.00M	USD	Annual
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	`EffectOfExchangeRateOnCashAndCashEquivalents`	$-92.00M	USD	Annual
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$19.00M	USD	Annual
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$186.00M	USD	Annual
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-103.00M	USD	Annual
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	`CashAndCashEquivalentsAtCarryingValue`	$477.00M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	`CashAndCashEquivalentsAtCarryingValue`	$374.00M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	`CashAndCashEquivalentsAtCarryingValue`	$272.00M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	`CashAndCashEquivalentsAtCarryingValue`	$291.00M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF YEAR	`CashAndCashEquivalentsAtCarryingValue`	$477.00M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF YEAR	`CashAndCashEquivalentsAtCarryingValue`	$374.00M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF YEAR	`CashAndCashEquivalentsAtCarryingValue`	$272.00M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF YEAR	`CashAndCashEquivalentsAtCarryingValue`	$291.00M	USD	Point-in-time
Interest paid	`InterestPaid`	$232.00M	USD	Annual
Interest paid	`InterestPaid`	$245.00M	USD	Annual
Interest paid	`InterestPaid`	$206.00M	USD	Annual
Income taxes paid, net of refunds	`IncomeTaxesPaidNet`	$337.00M	USD	Annual
Income taxes paid, net of refunds	`IncomeTaxesPaidNet`	$238.00M	USD	Annual
Income taxes paid, net of refunds	`IncomeTaxesPaidNet`	$445.00M	USD	Annual

Stockholders Equity 61 line items

Line Item	Tag	Value	Unit	Period
Balance (in shares)	`CommonStockSharesIssued`	280.00M	shares	Point-in-time
Balance (in shares)	`CommonStockSharesIssued`	300.70M	shares	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.63B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$8.12B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$7.80B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$8.20B	USD	Point-in-time
Net income	`ProfitLoss`	$467.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.15B	USD	Annual
Net income	`ProfitLoss`	$336.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.02B	USD	Annual
Net income	`ProfitLoss`	$1.43B	USD	Annual
Net income	`ProfitLoss`	$264.00M	USD	1 Quarter
Net income	`ProfitLoss`	$360.00M	USD	1 Quarter
Net income	`ProfitLoss`	$313.00M	USD	1 Quarter
Net income	`ProfitLoss`	$315.00M	USD	1 Quarter
Net income	`ProfitLoss`	$272.00M	USD	1 Quarter
Net income	`ProfitLoss`	$252.00M	USD	1 Quarter
Retirement of treasury shares (in shares)	`TreasuryStockSharesRetired`	60.00M	shares	Point-in-time
Retirement of treasury shares	`TreasuryStockRetiredCostMethodAmount`	-	USD	Annual
Shares issued employee benefit plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$27.00M	USD	Annual
Shares issued employee benefit plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$26.00M	USD	Annual
Shares issued employee benefit plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$29.00M	USD	Annual
Shares issued employee compensation	`StockIssuedDuringPeriodValueEmployeeBenefitPlan`	$-50.00M	USD	Annual
Shares issued employee compensation	`StockIssuedDuringPeriodValueEmployeeBenefitPlan`	$-131.00M	USD	Annual
Shares purchased	`TreasuryStockValueAcquiredCostMethod`	$1.12B	USD	Annual
Shares purchased	`TreasuryStockValueAcquiredCostMethod`	$2.25B	USD	Annual
Shares purchased	`TreasuryStockValueAcquiredCostMethod`	$1.10B	USD	Annual
Shares reissued employee benefit plans	`StockIssuedDuringPeriodValueTreasuryStockReissuedShareBasedCompensation`	$-13.00M	USD	Annual
Tax benefit employee benefit plans	`AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation`	$33.00M	USD	Annual
Tax benefit employee benefit plans	`AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation`	$74.00M	USD	Annual
Tax benefit employee benefit plans	`AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation`	$89.00M	USD	Annual
Share-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$328.00M	USD	Annual
Share-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$300.00M	USD	Annual
Share-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$212.00M	USD	Annual
Dividends to shareholders	`DividendsCommonStockCash`	$204.00M	USD	Annual
Dividends to shareholders	`DividendsCommonStockCash`	$212.00M	USD	Annual
Dividends to shareholders	`DividendsCommonStockCash`	$273.00M	USD	Annual
Change in fair value of investments	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	-	USD	Annual
Change in fair value of investments	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$1.00M	USD	Annual
Change in fair value of investments	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-1.00M	USD	Annual
Net change in fair value of derivatives	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$9.00M	USD	Annual
Net change in fair value of derivatives	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$6.00M	USD	Annual
Net change in fair value of derivatives	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$5.00M	USD	Annual
Net foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$109.00M	USD	Annual
Net foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-507.00M	USD	Annual
Net foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-65.00M	USD	Annual
Net post-retirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-293.00M	USD	Annual
Net post-retirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$358.00M	USD	Annual
Net post-retirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$260.00M	USD	Annual
Sales of subsidiary shares to non-controlling interest	`NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest`	$3.00M	USD	Annual
Purchase of subsidiary shares from non-controlling interest	`MinorityInterestDecreaseFromRedemptions`	$11.00M	USD	Annual
Purchase of subsidiary shares from non-controlling interest	`MinorityInterestDecreaseFromRedemptions`	-	USD	Annual
Dividends paid to non-controlling interests on subsidiary common stock	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$19.00M	USD	Annual
Dividends paid to non-controlling interests on subsidiary common stock	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$24.00M	USD	Annual
Dividends paid to non-controlling interests on subsidiary common stock	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$27.00M	USD	Annual
Balance (in shares)	`CommonStockSharesIssued`	280.00M	shares	Point-in-time
Balance (in shares)	`CommonStockSharesIssued`	300.70M	shares	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.63B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$8.12B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$7.80B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$8.20B	USD	Point-in-time

Comprehensive Income 57 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$467.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.15B	USD	Annual
Net income	`ProfitLoss`	$336.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.02B	USD	Annual
Net income	`ProfitLoss`	$1.43B	USD	Annual
Net income	`ProfitLoss`	$264.00M	USD	1 Quarter
Net income	`ProfitLoss`	$360.00M	USD	1 Quarter
Net income	`ProfitLoss`	$313.00M	USD	1 Quarter
Net income	`ProfitLoss`	$315.00M	USD	1 Quarter
Net income	`ProfitLoss`	$272.00M	USD	1 Quarter
Net income	`ProfitLoss`	$252.00M	USD	1 Quarter
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$9.00M	USD	1 Quarter
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$8.00M	USD	1 Quarter
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$27.00M	USD	Annual
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$34.00M	USD	Annual
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$5.00M	USD	1 Quarter
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$11.00M	USD	1 Quarter
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$11.00M	USD	1 Quarter
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$8.00M	USD	1 Quarter
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$35.00M	USD	Annual
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$11.00M	USD	1 Quarter
Less: Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$6.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$325.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$355.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$261.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$993.00M	USD	Annual
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$1.40B	USD	Annual
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$304.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$241.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$256.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$309.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$459.00M	USD	1 Quarter
Net income attributable to Aon shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$1.11B	USD	Annual
Change in fair value of investments	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	-	USD	Annual
Change in fair value of investments	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$1.00M	USD	Annual
Change in fair value of investments	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-1.00M	USD	Annual
Change in fair value of derivatives	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$9.00M	USD	Annual
Change in fair value of derivatives	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$6.00M	USD	Annual
Change in fair value of derivatives	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$5.00M	USD	Annual
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$109.00M	USD	Annual
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-507.00M	USD	Annual
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-65.00M	USD	Annual
Post-retirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-293.00M	USD	Annual
Post-retirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$358.00M	USD	Annual
Post-retirement benefit obligation	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$260.00M	USD	Annual
Total other comprehensive (loss) income	`OtherComprehensiveIncomeLossNetOfTax`	$-763.00M	USD	Annual
Total other comprehensive (loss) income	`OtherComprehensiveIncomeLossNetOfTax`	$235.00M	USD	Annual
Total other comprehensive (loss) income	`OtherComprehensiveIncomeLossNetOfTax`	$-240.00M	USD	Annual
Less: Other comprehensive (loss) income attributable to noncontrolling interests	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	$-1.00M	USD	Annual
Less: Other comprehensive (loss) income attributable to noncontrolling interests	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	$-3.00M	USD	Annual
Less: Other comprehensive (loss) income attributable to noncontrolling interests	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	-	USD	Annual
Total other comprehensive (loss) income attributable to Aon shareholders	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$236.00M	USD	Annual
Total other comprehensive (loss) income attributable to Aon shareholders	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-240.00M	USD	Annual
Total other comprehensive (loss) income attributable to Aon shareholders	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-760.00M	USD	Annual
Comprehensive income attributable to Aon shareholders	`ComprehensiveIncomeNetOfTax`	$753.00M	USD	Annual
Comprehensive income attributable to Aon shareholders	`ComprehensiveIncomeNetOfTax`	$1.35B	USD	Annual
Comprehensive income attributable to Aon shareholders	`ComprehensiveIncomeNetOfTax`	$637.00M	USD	Annual

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