10-K Filing

AMERICAN TOWER CORP /MA/ CIK: 1053507 FY 2019

Filing Information

Form Type	10-K
Accession Number	`0001053507-20-000028`
Period End Date	20191231
Filing Date	20200225
Fiscal Year	2019
Fiscal Period	FY
XBRL Instance	amt1231201910k_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 92 Income Statement 140 Cash Flow Statement 137 Stockholders Equity 45 Comprehensive Income 50

Balance Sheet 92 line items

Line Item	Tag	Value	Unit	Period
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	1.00B	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	1.00B	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$802.10M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$1.21B	USD	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	453.54M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$1.50B	USD	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	451.62M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	441.06M	shares	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalentsAtCarryingValue`	$96.20M	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalentsAtCarryingValue`	$76.80M	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalentsAtCarryingValue`	$152.80M	USD	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	442.89M	shares	Point-in-time
Accounts receivable, net	`AccountsReceivableNetCurrent`	$462.20M	USD	Point-in-time
Accounts receivable, net	`AccountsReceivableNetCurrent`	$459.00M	USD	Point-in-time
Treasury stock, shares (in shares)	`TreasuryStockShares`	10.65M	shares	Point-in-time
Treasury stock, shares (in shares)	`TreasuryStockShares`	10.56M	shares	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$621.20M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$513.60M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$2.39B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$2.55B	USD	Point-in-time
PROPERTY AND EQUIPMENT, net	`PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization`	$12.08B	USD	Point-in-time
PROPERTY AND EQUIPMENT, net	`PropertyPlantAndEquipmentNet`	$11.25B	USD	Point-in-time
GOODWILL	`Goodwill`	$5.50B	USD	Point-in-time
GOODWILL	`Goodwill`	$6.18B	USD	Point-in-time
GOODWILL	`Goodwill`	$5.64B	USD	Point-in-time
OTHER INTANGIBLE ASSETS, net	`IntangibleAssetsNetExcludingGoodwill`	$11.17B	USD	Point-in-time
OTHER INTANGIBLE ASSETS, net	`IntangibleAssetsNetExcludingGoodwill`	$12.32B	USD	Point-in-time
DEFERRED TAX ASSET	`DeferredIncomeTaxAssetsNet`	$157.70M	USD	Point-in-time
DEFERRED TAX ASSET	`DeferredIncomeTaxAssetsNet`	$131.80M	USD	Point-in-time
DEFERRED RENT ASSET	`DeferredRentReceivablesNetNoncurrent`	$1.77B	USD	Point-in-time
DEFERRED RENT ASSET	`DeferredRentReceivablesNetNoncurrent`	$1.58B	USD	Point-in-time
RIGHT-OF-USE ASSET	`OperatingLeaseRightOfUseAsset`	$7.36B	USD	Point-in-time
NOTES RECEIVABLE AND OTHER NON-CURRENT ASSETS	`OtherAssetsNoncurrent`	$962.60M	USD	Point-in-time
NOTES RECEIVABLE AND OTHER NON-CURRENT ASSETS	`OtherAssetsNoncurrent`	$406.40M	USD	Point-in-time
TOTAL	`Assets`	$33.01B	USD	Point-in-time
TOTAL	`Assets`	$42.80B	USD	Point-in-time
TOTAL	`Assets`	$33.21B	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$130.80M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$148.10M	USD	Point-in-time
Accrued expenses	`AccruedLiabilitiesCurrent`	$958.20M	USD	Point-in-time
Accrued expenses	`AccruedLiabilitiesCurrent`	$948.30M	USD	Point-in-time
Distributions payable	`DividendsPayableCurrent`	$377.40M	USD	Point-in-time
Distributions payable	`DividendsPayableCurrent`	$455.00M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$209.40M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$174.50M	USD	Point-in-time
Current portion of operating lease liability	`OperatingLeaseLiabilityCurrent`	$494.50M	USD	Point-in-time
Current portion of long-term obligations	`LongTermDebtCurrent`	$2.93B	USD	Point-in-time
Current portion of long-term obligations	`LongTermDebtCurrent`	$2.75B	USD	Point-in-time
Unearned revenue	`ContractWithCustomerLiabilityCurrent`	$294.30M	USD	Point-in-time
Unearned revenue	`ContractWithCustomerLiabilityCurrent`	$304.10M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$4.69B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$5.49B	USD	Point-in-time
LONG-TERM OBLIGATIONS	`LongTermDebtAndCapitalLeaseObligations`	$18.41B	USD	Point-in-time
LONG-TERM OBLIGATIONS	`LongTermDebtAndCapitalLeaseObligations`	$21.13B	USD	Point-in-time
OPERATING LEASE LIABILITY	`OperatingLeaseLiabilityNoncurrent`	$6.51B	USD	Point-in-time
ASSET RETIREMENT OBLIGATIONS	`AssetRetirementObligation`	$1.38B	USD	Point-in-time
ASSET RETIREMENT OBLIGATIONS	`AssetRetirementObligation`	$1.21B	USD	Point-in-time
ASSET RETIREMENT OBLIGATIONS	`AssetRetirementObligation`	$1.18B	USD	Point-in-time
DEFERRED TAX LIABILITY	`DeferredIncomeTaxLiabilitiesNet`	$768.30M	USD	Point-in-time
DEFERRED TAX LIABILITY	`DeferredIncomeTaxLiabilitiesNet`	$535.90M	USD	Point-in-time
OTHER NON-CURRENT LIABILITIES	`OtherLiabilitiesNoncurrent`	$1.27B	USD	Point-in-time
OTHER NON-CURRENT LIABILITIES	`OtherLiabilitiesNoncurrent`	$937.00M	USD	Point-in-time
Total liabilities	`Liabilities`	$36.21B	USD	Point-in-time
Total liabilities	`Liabilities`	$26.11B	USD	Point-in-time
COMMITMENTS AND CONTINGENCIES	`CommitmentsAndContingencies`	-	USD	Point-in-time
COMMITMENTS AND CONTINGENCIES	`CommitmentsAndContingencies`	-	USD	Point-in-time
REDEEMABLE NONCONTROLLING INTERESTS	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$1.00B	USD	Point-in-time
REDEEMABLE NONCONTROLLING INTERESTS	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$1.10B	USD	Point-in-time
REDEEMABLE NONCONTROLLING INTERESTS	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$1.09B	USD	Point-in-time
REDEEMABLE NONCONTROLLING INTERESTS	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$1.13B	USD	Point-in-time
Common stock: $.01 par value; 1,000,000 shares authorized; 453,541 and 451,617 shares issued; and 442,890 and 441,060 shares outstanding, respectively	`CommonStockValue`	$4.50M	USD	Point-in-time
Common stock: $.01 par value; 1,000,000 shares authorized; 453,541 and 451,617 shares issued; and 442,890 and 441,060 shares outstanding, respectively	`CommonStockValue`	$4.50M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$10.38B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$10.12B	USD	Point-in-time
Distributions in excess of earnings	`RetainedEarningsAccumulatedDeficit`	$-1.02B	USD	Point-in-time
Distributions in excess of earnings	`RetainedEarningsAccumulatedDeficit`	$-1.20B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-2.82B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-2.64B	USD	Point-in-time
Treasury stock (10,651 and 10,557 shares at cost, respectively)	`TreasuryStockValue`	$1.23B	USD	Point-in-time
Treasury stock (10,651 and 10,557 shares at cost, respectively)	`TreasuryStockValue`	$1.21B	USD	Point-in-time
Total American Tower Corporation equity	`StockholdersEquity`	$5.34B	USD	Point-in-time
Total American Tower Corporation equity	`StockholdersEquity`	$5.06B	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$435.00M	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$563.50M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.49B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.98B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.83B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.90B	USD	Point-in-time
TOTAL	`LiabilitiesAndStockholdersEquity`	$33.01B	USD	Point-in-time
TOTAL	`LiabilitiesAndStockholdersEquity`	$42.80B	USD	Point-in-time

Income Statement 140 line items

Line Item	Tag	Value	Unit	Period
Foreign currency (losses) gains	`ForeignCurrencyTransactionGainLossUnrealized`	$-4.50M	USD	Annual
Foreign currency (losses) gains	`ForeignCurrencyTransactionGainLossUnrealized`	$6.10M	USD	Annual
Foreign currency (losses) gains	`ForeignCurrencyTransactionGainLossUnrealized`	$26.40M	USD	Annual
Revenue from contracts with customers	`RevenueFromContractWithCustomerExcludingAssessedTax`	$491.30M	USD	Annual
Revenue from contracts with customers	`RevenueFromContractWithCustomerExcludingAssessedTax`	$527.20M	USD	Annual
Revenues	`Revenues`	$1.79B	USD	1 Quarter
Revenues	`Revenues`	$6.66B	USD	Annual
Revenues	`Revenues`	$1.89B	USD	1 Quarter
Revenues	`Revenues`	$7.58B	USD	Annual
Revenues	`Revenues`	$1.74B	USD	1 Quarter
Revenues	`Revenues`	$1.81B	USD	1 Quarter
Revenues	`Revenues`	$7.44B	USD	Annual
Revenues	`Revenues`	$1.95B	USD	1 Quarter
Revenues	`Revenues`	$1.92B	USD	1 Quarter
Revenues	`Revenues`	$2.13B	USD	1 Quarter
Revenues	`Revenues`	$1.78B	USD	1 Quarter
Property	`DirectCostsOfLeasedAndRentedPropertyOrEquipment`	$2.02B	USD	Annual
Property	`DirectCostsOfLeasedAndRentedPropertyOrEquipment`	$2.13B	USD	Annual
Property	`DirectCostsOfLeasedAndRentedPropertyOrEquipment`	$2.17B	USD	Annual
Services	`CostOfGoodsAndServicesSold`	$43.10M	USD	Annual
Services	`CostOfGoodsAndServicesSold`	$34.60M	USD	Annual
Services	`CostOfGoodsAndServicesSold`	$49.10M	USD	Annual
Depreciation, amortization and accretion	`DepreciationAmortizationAndAccretionNet`	$2.11B	USD	Annual
Depreciation, amortization and accretion	`DepreciationAmortizationAndAccretionNet`	$1.72B	USD	Annual
Depreciation, amortization and accretion	`DepreciationAmortizationAndAccretionNet`	$1.78B	USD	Annual
Selling, general, administrative and development expense	`SellingGeneralAndAdministrativeExpense`	$733.20M	USD	Annual
Selling, general, administrative and development expense	`SellingGeneralAndAdministrativeExpense`	$637.00M	USD	Annual
Selling, general, administrative and development expense	`SellingGeneralAndAdministrativeExpense`	$730.40M	USD	Annual
Other operating expenses	`OtherCostAndExpenseOperating`	$513.30M	USD	Annual
Other operating expenses	`OtherCostAndExpenseOperating`	$166.30M	USD	Annual
Other operating expenses	`OtherCostAndExpenseOperating`	$256.00M	USD	Annual
Total operating expenses	`CostsAndExpenses`	$4.89B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$5.54B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$4.67B	USD	Annual
OPERATING INCOME	`OperatingIncomeLoss`	$567.20M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$402.90M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$683.90M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$388.90M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$728.30M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$2.00B	USD	Annual
OPERATING INCOME	`OperatingIncomeLoss`	$614.90M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$546.00M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$2.69B	USD	Annual
OPERATING INCOME	`OperatingIncomeLoss`	$1.91B	USD	Annual
OPERATING INCOME	`OperatingIncomeLoss`	$661.30M	USD	1 Quarter
Interest (expense) income, TV Azteca	`InterestIncomeExpenseNonoperatingNet`	$-100.00K	USD	Annual
Interest (expense) income, TV Azteca	`InterestIncomeExpenseNonoperatingNet`	-	USD	Annual
Interest (expense) income, TV Azteca	`InterestIncomeExpenseNonoperatingNet`	$10.80M	USD	Annual
Interest income	`InterestIncomeOther`	$54.70M	USD	Annual
Interest income	`InterestIncomeOther`	$46.80M	USD	Annual
Interest income	`InterestIncomeOther`	$35.40M	USD	Annual
Interest expense	`InterestExpense`	$814.20M	USD	Annual
Interest expense	`InterestExpense`	$825.50M	USD	Annual
Interest expense	`InterestExpense`	$749.60M	USD	Annual
Loss on retirement of long-term obligations	`GainsLossesOnExtinguishmentOfDebt`	$-70.20M	USD	Annual
Loss on retirement of long-term obligations	`GainsLossesOnExtinguishmentOfDebt`	$-22.20M	USD	Annual
Loss on retirement of long-term obligations	`GainsLossesOnExtinguishmentOfDebt`	$-3.30M	USD	Annual
Other income (including foreign currency gains (losses) of $6.1, ($4.5), and $26.4, respectively)	`OtherNonoperatingIncomeExpense`	$17.60M	USD	Annual
Other income (including foreign currency gains (losses) of $6.1, ($4.5), and $26.4, respectively)	`OtherNonoperatingIncomeExpense`	$23.80M	USD	Annual
Other income (including foreign currency gains (losses) of $6.1, ($4.5), and $26.4, respectively)	`OtherNonoperatingIncomeExpense`	$31.30M	USD	Annual
Total other expense	`NonoperatingIncomeExpense`	$-750.40M	USD	Annual
Total other expense	`NonoperatingIncomeExpense`	$-742.30M	USD	Annual
Total other expense	`NonoperatingIncomeExpense`	$-772.00M	USD	Annual
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$1.26B	USD	Annual
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$1.15B	USD	Annual
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$1.92B	USD	Annual
Income tax benefit (provision)	`IncomeTaxExpenseBenefit`	$30.70M	USD	Annual
Income tax benefit (provision)	`IncomeTaxExpenseBenefit`	$-110.10M	USD	Annual
Income tax benefit (provision)	`IncomeTaxExpenseBenefit`	$-200.00K	USD	Annual
NET INCOME	`ProfitLoss`	$314.40M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$377.30M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$505.30M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$280.30M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$1.92B	USD	Annual
NET INCOME	`ProfitLoss`	$1.26B	USD	Annual
NET INCOME	`ProfitLoss`	$1.23B	USD	Annual
NET INCOME	`ProfitLoss`	$569.40M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$292.70M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$407.60M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$434.30M	USD	1 Quarter
Net (income) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$28.80M	USD	Annual
Net (income) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-13.50M	USD	Annual
Net (income) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$28.30M	USD	Annual
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION STOCKHOLDERS	`NetIncomeLoss`	$562.70M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION STOCKHOLDERS	`NetIncomeLoss`	$1.24B	USD	Annual
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION STOCKHOLDERS	`NetIncomeLoss`	$366.90M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION STOCKHOLDERS	`NetIncomeLoss`	$1.89B	USD	Annual
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION STOCKHOLDERS	`NetIncomeLoss`	$306.70M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION STOCKHOLDERS	`NetIncomeLoss`	$498.60M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION STOCKHOLDERS	`NetIncomeLoss`	$429.10M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION STOCKHOLDERS	`NetIncomeLoss`	$397.40M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION STOCKHOLDERS	`NetIncomeLoss`	$277.60M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION STOCKHOLDERS	`NetIncomeLoss`	$285.20M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION STOCKHOLDERS	`NetIncomeLoss`	$1.24B	USD	Annual
Dividends on preferred stock	`PreferredStockDividendsIncomeStatementImpact`	$9.40M	USD	Annual
Dividends on preferred stock	`PreferredStockDividendsIncomeStatementImpact`	-	USD	1 Quarter
Dividends on preferred stock	`PreferredStockDividendsIncomeStatementImpact`	$9.40M	USD	1 Quarter
Dividends on preferred stock	`PreferredStockDividendsIncomeStatementImpact`	$87.40M	USD	Annual
Dividends on preferred stock	`PreferredStockDividendsIncomeStatementImpact`	-	USD	Annual
Dividends on preferred stock	`PreferredStockDividendsIncomeStatementImpact`	-	USD	1 Quarter
Dividends on preferred stock	`PreferredStockDividendsIncomeStatementImpact`	-	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$275.80M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$1.15B	USD	Annual
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$366.90M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$397.40M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$1.23B	USD	Annual
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$306.70M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$562.70M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$277.60M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$498.60M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$1.89B	USD	Annual
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$429.10M	USD	1 Quarter
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.90	USD	1 Quarter
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.83	USD	1 Quarter
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.63	USD	1 Quarter
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.69	USD	1 Quarter
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareBasic`	$2.69	USD	Annual
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareBasic`	$2.79	USD	Annual
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareBasic`	$4.27	USD	Annual
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareBasic`	$1.13	USD	1 Quarter
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.97	USD	1 Quarter
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.63	USD	1 Quarter
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareBasic`	$1.27	USD	1 Quarter
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.83	USD	1 Quarter
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$4.24	USD	Annual
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$1.26	USD	1 Quarter
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.63	USD	1 Quarter
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$2.67	USD	Annual
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.96	USD	1 Quarter
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$1.12	USD	1 Quarter
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.69	USD	1 Quarter
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.89	USD	1 Quarter
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$2.77	USD	Annual
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.62	USD	1 Quarter
BASIC (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	442.32M	shares	Annual
BASIC (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	439.61M	shares	Annual
BASIC (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	428.18M	shares	Annual
DILUTED (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	442.96M	shares	Annual
DILUTED (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	431.69M	shares	Annual
DILUTED (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	445.52M	shares	Annual

Cash Flow Statement 137 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$314.40M	USD	1 Quarter
Net income	`ProfitLoss`	$377.30M	USD	1 Quarter
Net income	`ProfitLoss`	$505.30M	USD	1 Quarter
Net income	`ProfitLoss`	$280.30M	USD	1 Quarter
Net income	`ProfitLoss`	$1.92B	USD	Annual
Net income	`ProfitLoss`	$1.26B	USD	Annual
Net income	`ProfitLoss`	$1.23B	USD	Annual
Net income	`ProfitLoss`	$569.40M	USD	1 Quarter
Net income	`ProfitLoss`	$292.70M	USD	1 Quarter
Net income	`ProfitLoss`	$407.60M	USD	1 Quarter
Net income	`ProfitLoss`	$434.30M	USD	1 Quarter
Depreciation, amortization and accretion	`DepreciationAmortizationAndAccretionNet`	$2.11B	USD	Annual
Depreciation, amortization and accretion	`DepreciationAmortizationAndAccretionNet`	$1.72B	USD	Annual
Depreciation, amortization and accretion	`DepreciationAmortizationAndAccretionNet`	$1.78B	USD	Annual
Stock-based compensation expense	`ShareBasedCompensation`	$137.50M	USD	Annual
Stock-based compensation expense	`ShareBasedCompensation`	$108.50M	USD	Annual
Stock-based compensation expense	`ShareBasedCompensation`	$111.40M	USD	Annual
Loss (gain) on investments, unrealized foreign currency loss and other non-cash expense	`LossGainOnInvestmentsAndOtherNonCashIncomeExpense`	$47.30M	USD	Annual
Loss (gain) on investments, unrealized foreign currency loss and other non-cash expense	`LossGainOnInvestmentsAndOtherNonCashIncomeExpense`	$46.20M	USD	Annual
Loss (gain) on investments, unrealized foreign currency loss and other non-cash expense	`LossGainOnInvestmentsAndOtherNonCashIncomeExpense`	$-18.00M	USD	Annual
Impairments, net loss on sale of long-lived assets, non-cash restructuring and merger related expenses	`RestructuringCostsAndAssetImpairmentCharges`	$242.40M	USD	Annual
Impairments, net loss on sale of long-lived assets, non-cash restructuring and merger related expenses	`RestructuringCostsAndAssetImpairmentCharges`	$479.60M	USD	Annual
Impairments, net loss on sale of long-lived assets, non-cash restructuring and merger related expenses	`RestructuringCostsAndAssetImpairmentCharges`	$140.00M	USD	Annual
Loss on early retirement of long-term obligations	`ExtinguishmentOfDebtGainLossNetOfTax`	$-3.30M	USD	Annual
Loss on early retirement of long-term obligations	`ExtinguishmentOfDebtGainLossNetOfTax`	$-70.20M	USD	Annual
Loss on early retirement of long-term obligations	`ExtinguishmentOfDebtGainLossNetOfTax`	$-22.20M	USD	Annual
Amortization of deferred financing costs, debt discounts and premiums and other non-cash interest	`AmortizationOfFinancingCostsAndDiscounts`	$20.00M	USD	Annual
Amortization of deferred financing costs, debt discounts and premiums and other non-cash interest	`AmortizationOfFinancingCostsAndDiscounts`	$25.90M	USD	Annual
Amortization of deferred financing costs, debt discounts and premiums and other non-cash interest	`AmortizationOfFinancingCostsAndDiscounts`	$22.10M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxesAndTaxCredits`	$-303.00M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxesAndTaxCredits`	$-86.60M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxesAndTaxCredits`	$-55.10M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$32.10M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$191.10M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$-12.50M	USD	Annual
Prepaid and other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$179.90M	USD	Annual
Prepaid and other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$101.70M	USD	Annual
Prepaid and other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$67.60M	USD	Annual
Deferred rent asset	`StraightLineRent`	$194.40M	USD	Annual
Deferred rent asset	`StraightLineRent`	$87.60M	USD	Annual
Deferred rent asset	`StraightLineRent`	$183.50M	USD	Annual
Right-of-use asset and Operating lease liability, net	`IncreaseDecreaseInRightOfUseAssetAndOperatingLeaseLiability`	$-17.40M	USD	Annual
Accounts payable and accrued expenses	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$69.30M	USD	Annual
Accounts payable and accrued expenses	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-46.80M	USD	Annual
Accounts payable and accrued expenses	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$95.80M	USD	Annual
Accrued interest	`IncreaseDecreaseInInterestPayableNet`	$32.40M	USD	Annual
Accrued interest	`IncreaseDecreaseInInterestPayableNet`	$9.20M	USD	Annual
Accrued interest	`IncreaseDecreaseInInterestPayableNet`	$8.40M	USD	Annual
Unearned revenue	`IncreaseDecreaseInContractWithCustomerLiability`	$59.30M	USD	Annual
Unearned revenue	`IncreaseDecreaseInContractWithCustomerLiability`	$2.50M	USD	Annual
Unearned revenue	`IncreaseDecreaseInContractWithCustomerLiability`	$85.80M	USD	Annual
Deferred rent liability	`IncreaseDecreaseInDeferredRentLiability`	$-57.90M	USD	Annual
Deferred rent liability	`IncreaseDecreaseInDeferredRentLiability`	$-62.30M	USD	Annual
Deferred rent liability	`IncreaseDecreaseInDeferredRentLiability`	-	USD	Annual
Other non-current liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$-14.00M	USD	Annual
Other non-current liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$100.00K	USD	Annual
Other non-current liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$-13.40M	USD	Annual
Cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$2.93B	USD	Annual
Cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$3.75B	USD	Annual
Cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$3.75B	USD	Annual
Payments for purchase of property and equipment and construction activities	`PaymentsToAcquirePropertyPlantAndEquipment`	$913.20M	USD	Annual
Payments for purchase of property and equipment and construction activities	`PaymentsToAcquirePropertyPlantAndEquipment`	$803.60M	USD	Annual
Payments for purchase of property and equipment and construction activities	`PaymentsToAcquirePropertyPlantAndEquipment`	$991.30M	USD	Annual
Payments for acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$2.96B	USD	Annual
Payments for acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$1.88B	USD	Annual
Payments for acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$2.01B	USD	Annual
Proceeds from sales of short-term investments and other non-current assets	`ProceedsFromSaleOfAvailableForSaleSecuritiesAndOtherProductiveAssets`	$14.70M	USD	Annual
Proceeds from sales of short-term investments and other non-current assets	`ProceedsFromSaleOfAvailableForSaleSecuritiesAndOtherProductiveAssets`	$383.50M	USD	Annual
Proceeds from sales of short-term investments and other non-current assets	`ProceedsFromSaleOfAvailableForSaleSecuritiesAndOtherProductiveAssets`	$1.25B	USD	Annual
Payments for short-term investments	`PaymentsToAcquireShortTermInvestments`	-	USD	Annual
Payments for short-term investments	`PaymentsToAcquireShortTermInvestments`	$1.15B	USD	Annual
Payments for short-term investments	`PaymentsToAcquireShortTermInvestments`	$355.90M	USD	Annual
Deposits and other	`PaymentsForProceedsFromOtherInvestingActivities`	$5.00M	USD	Annual
Deposits and other	`PaymentsForProceedsFromOtherInvestingActivities`	$64.20M	USD	Annual
Deposits and other	`PaymentsForProceedsFromOtherInvestingActivities`	$52.80M	USD	Annual
Cash used for investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-2.80B	USD	Annual
Cash used for investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-3.99B	USD	Annual
Cash used for investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-2.75B	USD	Annual
Borrowings under credit facilities	`ProceedsFromLinesOfCredit`	$3.26B	USD	Annual
Borrowings under credit facilities	`ProceedsFromLinesOfCredit`	$5.75B	USD	Annual
Borrowings under credit facilities	`ProceedsFromLinesOfCredit`	$5.36B	USD	Annual
Proceeds from issuance of senior notes, net	`ProceedsFromIssuanceOfSeniorLongTermDebt`	$2.67B	USD	Annual
Proceeds from issuance of senior notes, net	`ProceedsFromIssuanceOfSeniorLongTermDebt`	$4.88B	USD	Annual
Proceeds from issuance of senior notes, net	`ProceedsFromIssuanceOfSeniorLongTermDebt`	$584.90M	USD	Annual
Proceeds from term loan	`ProceedsFromIssuanceOfUnsecuredDebt`	$1.30B	USD	Annual
Proceeds from term loan	`ProceedsFromIssuanceOfUnsecuredDebt`	-	USD	Annual
Proceeds from term loan	`ProceedsFromIssuanceOfUnsecuredDebt`	$1.50B	USD	Annual
Proceeds from issuance of securities in securitization transaction	`ProceedsFromIssuanceOfSecuredDebt`	-	USD	Annual
Proceeds from issuance of securities in securitization transaction	`ProceedsFromIssuanceOfSecuredDebt`	-	USD	Annual
Proceeds from issuance of securities in securitization transaction	`ProceedsFromIssuanceOfSecuredDebt`	$500.00M	USD	Annual
Repayments of notes payable, credit facilities, term loan, senior notes, secured debt, finance leases and capital leases	`RepaymentsOfLongTermDebtAndCapitalSecurities`	$4.88B	USD	Annual
Repayments of notes payable, credit facilities, term loan, senior notes, secured debt, finance leases and capital leases	`RepaymentsOfLongTermDebtAndCapitalSecurities`	$9.23B	USD	Annual
Repayments of notes payable, credit facilities, term loan, senior notes, secured debt, finance leases and capital leases	`RepaymentsOfLongTermDebtAndCapitalSecurities`	$6.48B	USD	Annual
Distributions to non-controlling interests holders	`PaymentsOfDividendsMinorityInterest`	$11.80M	USD	Annual
Distributions to non-controlling interests holders	`PaymentsOfDividendsMinorityInterest`	$14.40M	USD	Annual
Contributions from noncontrolling interest holders	`ProceedsFromMinorityShareholders`	$264.30M	USD	Annual
Purchases of common stock	`PaymentsForRepurchaseOfCommonStock`	$19.60M	USD	Annual
Purchases of common stock	`PaymentsForRepurchaseOfCommonStock`	$232.80M	USD	Annual
Purchases of common stock	`PaymentsForRepurchaseOfCommonStock`	$766.30M	USD	Annual
Proceeds from stock options and employee stock purchase plan	`ProceedsFromIssuanceOrSaleOfEquity`	$98.90M	USD	Annual
Proceeds from stock options and employee stock purchase plan	`ProceedsFromIssuanceOrSaleOfEquity`	$105.50M	USD	Annual
Proceeds from stock options and employee stock purchase plan	`ProceedsFromIssuanceOrSaleOfEquity`	$119.70M	USD	Annual
Distributions paid on common stock	`PaymentsOfDividendsCommonStock`	$1.60B	USD	Annual
Distributions paid on common stock	`PaymentsOfDividendsCommonStock`	$1.32B	USD	Annual
Distributions paid on common stock	`PaymentsOfDividendsCommonStock`	$1.07B	USD	Annual
Distributions paid on preferred stock	`PaymentsOfDividendsPreferredStockAndPreferenceStock`	$91.40M	USD	Annual
Distributions paid on preferred stock	`PaymentsOfDividendsPreferredStockAndPreferenceStock`	-	USD	Annual
Distributions paid on preferred stock	`PaymentsOfDividendsPreferredStockAndPreferenceStock`	$18.90M	USD	Annual
Payment for early retirement of long-term obligations	`PaymentsOfDebtExtinguishmentCosts`	$3.30M	USD	Annual
Payment for early retirement of long-term obligations	`PaymentsOfDebtExtinguishmentCosts`	$21.00M	USD	Annual
Payment for early retirement of long-term obligations	`PaymentsOfDebtExtinguishmentCosts`	$75.30M	USD	Annual
Deferred financing costs and other financing activities	`ProceedsFromPaymentsForOtherFinancingActivities`	$-56.60M	USD	Annual
Deferred financing costs and other financing activities	`ProceedsFromPaymentsForOtherFinancingActivities`	$-135.60M	USD	Annual
Deferred financing costs and other financing activities	`ProceedsFromPaymentsForOtherFinancingActivities`	$-40.00M	USD	Annual
Purchase of redeemable noncontrolling interest	`PaymentsForRepurchaseOfRedeemableNoncontrollingInterest`	-	USD	Annual
Purchase of redeemable noncontrolling interest	`PaymentsForRepurchaseOfRedeemableNoncontrollingInterest`	$425.70M	USD	Annual
Purchase of redeemable noncontrolling interest	`PaymentsForRepurchaseOfRedeemableNoncontrollingInterest`	-	USD	Annual
Purchase of noncontrolling interest	`PaymentsToMinorityShareholders`	-	USD	Annual
Purchase of noncontrolling interest	`PaymentsToMinorityShareholders`	$68.50M	USD	Annual
Purchase of noncontrolling interest	`PaymentsToMinorityShareholders`	$20.50M	USD	Annual
Cash provided by (used for) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-607.70M	USD	Annual
Cash provided by (used for) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-113.00M	USD	Annual
Cash provided by (used for) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$521.70M	USD	Annual
Net effect of changes in foreign currency exchange rates on cash and cash equivalents, and restricted cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-13.70M	USD	Annual
Net effect of changes in foreign currency exchange rates on cash and cash equivalents, and restricted cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-41.10M	USD	Annual
Net effect of changes in foreign currency exchange rates on cash and cash equivalents, and restricted cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$6.70M	USD	Annual
NET INCREASE IN CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$273.10M	USD	Annual
NET INCREASE IN CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$350.00M	USD	Annual
NET INCREASE IN CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$18.40M	USD	Annual
CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH, BEGINNING OF YEAR	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$1.30B	USD	Point-in-time
CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH, BEGINNING OF YEAR	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$954.90M	USD	Point-in-time
CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH, BEGINNING OF YEAR	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$936.50M	USD	Point-in-time
CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH, BEGINNING OF YEAR	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$1.58B	USD	Point-in-time
CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH, END OF YEAR	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$1.30B	USD	Point-in-time
CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH, END OF YEAR	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$954.90M	USD	Point-in-time
CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH, END OF YEAR	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$936.50M	USD	Point-in-time
CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH, END OF YEAR	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$1.58B	USD	Point-in-time

Stockholders Equity 45 line items

Line Item	Tag	Value	Unit	Period
BALANCE	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.49B	USD	Point-in-time
BALANCE	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.98B	USD	Point-in-time
BALANCE	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.83B	USD	Point-in-time
BALANCE	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.90B	USD	Point-in-time
Stock-based compensation related activity	`StockIssuedDuringPeriodValueShareBasedCompensation`	$143.20M	USD	Annual
Stock-based compensation related activity	`StockIssuedDuringPeriodValueShareBasedCompensation`	$190.40M	USD	Annual
Stock-based compensation related activity	`StockIssuedDuringPeriodValueShareBasedCompensation`	$195.00M	USD	Annual
Issuance of common stockstock purchase plan	`StockIssuedDuringPeriodValueEmployeeStockPurchasePlan`	$10.20M	USD	Annual
Issuance of common stockstock purchase plan	`StockIssuedDuringPeriodValueEmployeeStockPurchasePlan`	$9.00M	USD	Annual
Issuance of common stockstock purchase plan	`StockIssuedDuringPeriodValueEmployeeStockPurchasePlan`	$11.30M	USD	Annual
Conversion of preferred stock	`StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments`	-	USD	Annual
Conversion of preferred stock	`StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments`	-	USD	Annual
Treasury stock activity	`TreasuryStockValueAcquiredCostMethod`	$766.30M	USD	Annual
Treasury stock activity	`TreasuryStockValueAcquiredCostMethod`	$232.80M	USD	Annual
Treasury stock activity	`TreasuryStockValueAcquiredCostMethod`	$19.60M	USD	Annual
Changes in fair value of cash flow hedges, net of tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax`	$-100.00K	USD	Annual
Changes in fair value of cash flow hedges, net of tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax`	$-100.00K	USD	Annual
Changes in fair value of cash flow hedges, net of tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax`	$-400.00K	USD	Annual
Reclassification of unrealized gains on cash flow hedges to net income, net of tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$100.00K	USD	Annual
Reclassification of unrealized gains on cash flow hedges to net income, net of tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-200.00K	USD	Annual
Reclassification of unrealized gains on cash flow hedges to net income, net of tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-300.00K	USD	Annual
Foreign currency translation adjustment, net of tax	`OtherComprehensiveIncomeLossForeignCurrencyTransactionandTranslationAdjustmentNetofTaxLessAmountReclassifiedtoAdditionalPaidinCapital`	$76.10M	USD	Annual
Foreign currency translation adjustment, net of tax	`OtherComprehensiveIncomeLossForeignCurrencyTransactionandTranslationAdjustmentNetofTaxLessAmountReclassifiedtoAdditionalPaidinCapital`	$-777.20M	USD	Annual
Foreign currency translation adjustment, net of tax	`OtherComprehensiveIncomeLossForeignCurrencyTransactionandTranslationAdjustmentNetofTaxLessAmountReclassifiedtoAdditionalPaidinCapital`	$-149.60M	USD	Annual
Contributions from noncontrolling interest	`NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance`	$314.10M	USD	Annual
Adjustment to redeemable noncontrolling interest	`NoncontrollingInterestIncreaseFromBusinessCombination`	$28.10M	USD	Annual
Distributions to noncontrolling interest	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$14.30M	USD	Annual
Distributions to noncontrolling interest	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$14.60M	USD	Annual
Distributions to noncontrolling interest	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$15.00M	USD	Annual
Purchase of noncontrolling interest	`MinorityInterestDecreaseFromRedemptions`	$20.50M	USD	Annual
Purchase of noncontrolling interest	`MinorityInterestDecreaseFromRedemptions`	$68.50M	USD	Annual
Reclassification to redeemable noncontrolling interest	`NoncontrollingInterestDecreaseFromReclassificationFromPermanentToTemporaryEquity`	$523.00M	USD	Annual
Purchase of redeemable noncontrolling interest	`AdjustmentsToAdditionalPaidInCapitalIncreaseInCarryingAmountOfRedeemablePreferredStock`	-	USD	Annual
Common stock distributions declared	`DividendsCommonStockCash`	$1.13B	USD	Annual
Common stock distributions declared	`DividendsCommonStockCash`	$1.40B	USD	Annual
Common stock distributions declared	`DividendsCommonStockCash`	$1.68B	USD	Annual
Preferred stock dividends declared	`DividendsPreferredStockCash`	$18.90M	USD	Annual
Preferred stock dividends declared	`DividendsPreferredStockCash`	$91.40M	USD	Annual
Net income	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$1.92B	USD	Annual
Net income	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$1.26B	USD	Annual
Net income	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$1.27B	USD	Annual
BALANCE	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.49B	USD	Point-in-time
BALANCE	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.98B	USD	Point-in-time
BALANCE	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.83B	USD	Point-in-time
BALANCE	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.90B	USD	Point-in-time

Comprehensive Income 50 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$314.40M	USD	1 Quarter
Net income	`ProfitLoss`	$377.30M	USD	1 Quarter
Net income	`ProfitLoss`	$505.30M	USD	1 Quarter
Net income	`ProfitLoss`	$280.30M	USD	1 Quarter
Net income	`ProfitLoss`	$1.92B	USD	Annual
Net change in fair value of cash flow hedges, tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax`	-	USD	Annual
Net income	`ProfitLoss`	$1.26B	USD	Annual
Net income	`ProfitLoss`	$1.23B	USD	Annual
Net income	`ProfitLoss`	$569.40M	USD	1 Quarter
Net income	`ProfitLoss`	$292.70M	USD	1 Quarter
Net income	`ProfitLoss`	$407.60M	USD	1 Quarter
Net income	`ProfitLoss`	$434.30M	USD	1 Quarter
Net change in fair value of cash flow hedges, tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax`	-	USD	Annual
Net change in fair value of cash flow hedges, tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax`	-	USD	Annual
Reclassification of unrealized losses on cash flow hedges to net income, tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax`	-	USD	Annual
Reclassification of unrealized losses on cash flow hedges to net income, tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax`	-	USD	Annual
Reclassification of unrealized losses on cash flow hedges to net income, tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax`	-	USD	Annual
Changes in fair value of cash flow hedges, each net of tax expense of $0	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax`	$-100.00K	USD	Annual
Foreign currency translation adjustments, tax	`OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax`	$500.00K	USD	Annual
Foreign currency translation adjustments, tax	`OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax`	$-2.60M	USD	Annual
Changes in fair value of cash flow hedges, each net of tax expense of $0	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax`	$-100.00K	USD	Annual
Changes in fair value of cash flow hedges, each net of tax expense of $0	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax`	$-400.00K	USD	Annual
Foreign currency translation adjustments, tax	`OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax`	$1.00M	USD	Annual
Reclassification of unrealized losses (gains) on cash flow hedges to net income, each net of tax expense of $0	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-200.00K	USD	Annual
Reclassification of unrealized losses (gains) on cash flow hedges to net income, each net of tax expense of $0	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$100.00K	USD	Annual
Reclassification of unrealized losses (gains) on cash flow hedges to net income, each net of tax expense of $0	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax`	$-300.00K	USD	Annual
Adjustment to redeemable noncontrolling interest	`OtherComprehensiveIncomeLossRedeemableNoncontrollingInterestAdjustmentNetOfTax`	-	USD	Annual
Adjustment to redeemable noncontrolling interest	`OtherComprehensiveIncomeLossRedeemableNoncontrollingInterestAdjustmentNetOfTax`	$78.80M	USD	Annual
Adjustment to redeemable noncontrolling interest	`OtherComprehensiveIncomeLossRedeemableNoncontrollingInterestAdjustmentNetOfTax`	-	USD	Annual
Purchase of noncontrolling interest	`OtherComprehensiveIncomeLossPurchaseOfNoncontrollingInterestNetOfTax`	-	USD	Annual
Purchase of noncontrolling interest	`OtherComprehensiveIncomeLossPurchaseOfNoncontrollingInterestNetOfTax`	-	USD	Annual
Purchase of noncontrolling interest	`OtherComprehensiveIncomeLossPurchaseOfNoncontrollingInterestNetOfTax`	$500.00K	USD	Annual
Foreign currency translation adjustments, net of tax expense (benefit) of $0.5, ($2.6), and $1.0, respectively	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-869.30M	USD	Annual
Foreign currency translation adjustments, net of tax expense (benefit) of $0.5, ($2.6), and $1.0, respectively	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$144.40M	USD	Annual
Foreign currency translation adjustments, net of tax expense (benefit) of $0.5, ($2.6), and $1.0, respectively	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-157.90M	USD	Annual
Other comprehensive (loss) income	`OtherComprehensiveIncomeLossNetOfTax`	$143.90M	USD	Annual
Other comprehensive (loss) income	`OtherComprehensiveIncomeLossNetOfTax`	$-789.80M	USD	Annual
Other comprehensive (loss) income	`OtherComprehensiveIncomeLossNetOfTax`	$-157.80M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$474.90M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$1.76B	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$1.37B	USD	Annual
Comprehensive loss (income) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$109.40M	USD	Annual
Comprehensive loss (income) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-3.80M	USD	Annual
Comprehensive loss (income) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-96.90M	USD	Annual
Allocation of accumulated other comprehensive income resulting from purchase of noncontrolling interest and redeemable noncontrolling interest	`ComprehensiveIncomeLossNetOfTaxAttributableToRedeemableNoncontrollingInterest`	-	USD	Annual
Allocation of accumulated other comprehensive income resulting from purchase of noncontrolling interest and redeemable noncontrolling interest	`ComprehensiveIncomeLossNetOfTaxAttributableToRedeemableNoncontrollingInterest`	-	USD	Annual
Allocation of accumulated other comprehensive income resulting from purchase of noncontrolling interest and redeemable noncontrolling interest	`ComprehensiveIncomeLossNetOfTaxAttributableToRedeemableNoncontrollingInterest`	$55.50M	USD	Annual
Comprehensive income attributable to American Tower Corporation stockholders	`ComprehensiveIncomeNetOfTax`	$1.71B	USD	Annual
Comprehensive income attributable to American Tower Corporation stockholders	`ComprehensiveIncomeNetOfTax`	$571.80M	USD	Annual
Comprehensive income attributable to American Tower Corporation stockholders	`ComprehensiveIncomeNetOfTax`	$1.26B	USD	Annual

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