10-K Filing

AMERICAN TOWER CORP /MA/ CIK: 1053507 FY 2017

Filing Information

Form Type	10-K
Accession Number	`0001053507-18-000006`
Period End Date	20171231
Filing Date	20180228
Fiscal Year	2017
Fiscal Period	FY
XBRL Instance	amt-20171231.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 90 Income Statement 139 Cash Flow Statement 145 Stockholders Equity 44 Comprehensive Income 41

Balance Sheet 90 line items

Line Item	Tag	Value	Unit	Period
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$320.70M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$802.10M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$787.20M	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalentsAtCarryingValue`	$142.20M	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalentsAtCarryingValue`	$152.80M	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalentsAtCarryingValue`	$149.30M	USD	Point-in-time
Short-term investments	`ShortTermInvestments`	$4.00M	USD	Point-in-time
Short-term investments	`ShortTermInvestments`	$1.00M	USD	Point-in-time
Accounts receivable, net	`AccountsReceivableNetCurrent`	$308.40M	USD	Point-in-time
Accounts receivable, net	`AccountsReceivableNetCurrent`	$513.60M	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$441.00M	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$568.60M	USD	Point-in-time
Common stock, shares authorized	`CommonStockSharesAuthorized`	1.00B	shares	Point-in-time
Total current assets	`AssetsCurrent`	$2.04B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.69B	USD	Point-in-time
Common stock, shares authorized	`CommonStockSharesAuthorized`	1.00B	shares	Point-in-time
PROPERTY AND EQUIPMENT, net	`PropertyPlantAndEquipmentNet`	$11.10B	USD	Point-in-time
Common stock, shares issued	`CommonStockSharesIssued`	437.73M	shares	Point-in-time
PROPERTY AND EQUIPMENT, net	`PropertyPlantAndEquipmentNet`	$10.52B	USD	Point-in-time
Common stock, shares issued	`CommonStockSharesIssued`	429.91M	shares	Point-in-time
GOODWILL	`Goodwill`	$4.09B	USD	Point-in-time
Common stock, shares outstanding	`CommonStockSharesOutstanding`	428.82M	shares	Point-in-time
GOODWILL	`Goodwill`	$5.07B	USD	Point-in-time
GOODWILL	`Goodwill`	$5.64B	USD	Point-in-time
Common stock, shares outstanding	`CommonStockSharesOutstanding`	427.10M	shares	Point-in-time
Treasury stock, shares	`TreasuryStockShares`	2.81M	shares	Point-in-time
OTHER INTANGIBLE ASSETS, net	`IntangibleAssetsNetExcludingGoodwill`	$11.78B	USD	Point-in-time
Treasury stock, shares	`TreasuryStockShares`	8.91B	shares	Point-in-time
OTHER INTANGIBLE ASSETS, net	`IntangibleAssetsNetExcludingGoodwill`	$11.27B	USD	Point-in-time
DEFERRED TAX ASSET	`DeferredIncomeTaxAssetsNet`	$204.40M	USD	Point-in-time
DEFERRED TAX ASSET	`DeferredIncomeTaxAssetsNet`	$195.70M	USD	Point-in-time
DEFERRED RENT ASSET	`DeferredRentReceivablesNetNoncurrent`	$1.29B	USD	Point-in-time
DEFERRED RENT ASSET	`DeferredRentReceivablesNetNoncurrent`	$1.50B	USD	Point-in-time
NOTES RECEIVABLE AND OTHER NON-CURRENT ASSETS	`OtherAssetsNoncurrent`	$950.10M	USD	Point-in-time
NOTES RECEIVABLE AND OTHER NON-CURRENT ASSETS	`OtherAssetsNoncurrent`	$841.50M	USD	Point-in-time
TOTAL	`Assets`	$33.21B	USD	Point-in-time
TOTAL	`Assets`	$26.90B	USD	Point-in-time
TOTAL	`Assets`	$30.88B	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$142.90M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$118.70M	USD	Point-in-time
Accrued expenses	`AccruedLiabilitiesCurrent`	$620.50M	USD	Point-in-time
Accrued expenses	`AccruedLiabilitiesCurrent`	$854.30M	USD	Point-in-time
Distributions payable	`DividendsPayableCurrent`	$304.40M	USD	Point-in-time
Distributions payable	`DividendsPayableCurrent`	$250.60M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$157.30M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$166.90M	USD	Point-in-time
Current portion of long-term obligations	`LongTermDebtCurrent`	$774.80M	USD	Point-in-time
Current portion of long-term obligations	`LongTermDebtCurrent`	$238.80M	USD	Point-in-time
Unearned revenue	`DeferredRevenueCurrent`	$268.80M	USD	Point-in-time
Unearned revenue	`DeferredRevenueCurrent`	$245.40M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$1.63B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$2.51B	USD	Point-in-time
LONG-TERM OBLIGATIONS	`LongTermDebtAndCapitalLeaseObligations`	$19.43B	USD	Point-in-time
LONG-TERM OBLIGATIONS	`LongTermDebtAndCapitalLeaseObligations`	$18.29B	USD	Point-in-time
ASSET RETIREMENT OBLIGATIONS	`AssetRetirementObligation`	$1.18B	USD	Point-in-time
ASSET RETIREMENT OBLIGATIONS	`AssetRetirementObligation`	$856.90M	USD	Point-in-time
ASSET RETIREMENT OBLIGATIONS	`AssetRetirementObligation`	$965.50M	USD	Point-in-time
DEFERRED TAX LIABILITY	`DeferredIncomeTaxLiabilitiesNet`	$777.60M	USD	Point-in-time
DEFERRED TAX LIABILITY	`DeferredIncomeTaxLiabilitiesNet`	$898.10M	USD	Point-in-time
OTHER NON-CURRENT LIABILITIES	`OtherLiabilitiesNoncurrent`	$1.14B	USD	Point-in-time
OTHER NON-CURRENT LIABILITIES	`OtherLiabilitiesNoncurrent`	$1.24B	USD	Point-in-time
Total liabilities	`Liabilities`	$22.81B	USD	Point-in-time
Total liabilities	`Liabilities`	$25.26B	USD	Point-in-time
COMMITMENTS AND CONTINGENCIES	`CommitmentsAndContingencies`	-	USD	Point-in-time
COMMITMENTS AND CONTINGENCIES	`CommitmentsAndContingencies`	-	USD	Point-in-time
REDEEMABLE NONCONTROLLING INTERESTS	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$1.13B	USD	Point-in-time
REDEEMABLE NONCONTROLLING INTERESTS	`RedeemableNoncontrollingInterestEquityCarryingAmount`	-	USD	Point-in-time
REDEEMABLE NONCONTROLLING INTERESTS	`RedeemableNoncontrollingInterestEquityCarryingAmount`	$1.09B	USD	Point-in-time
Common stock: $.01 par value; 1,000,000 shares authorized; 437,729 and 429,913 shares issued; and 428,820 and 427,103 shares outstanding, respectively	`CommonStockValue`	$4.30M	USD	Point-in-time
Common stock: $.01 par value; 1,000,000 shares authorized; 437,729 and 429,913 shares issued; and 428,820 and 427,103 shares outstanding, respectively	`CommonStockValue`	$4.40M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$10.25B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$10.04B	USD	Point-in-time
Distributions in excess of earnings	`RetainedEarningsAccumulatedDeficit`	$-1.06B	USD	Point-in-time
Distributions in excess of earnings	`RetainedEarningsAccumulatedDeficit`	$-1.08B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-1.98B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-2.00B	USD	Point-in-time
Treasury stock (8,909 and 2,810 shares at cost, respectively)	`TreasuryStockValue`	$207.70M	USD	Point-in-time
Treasury stock (8,909 and 2,810 shares at cost, respectively)	`TreasuryStockValue`	$974.00M	USD	Point-in-time
Total American Tower Corporation equity	`StockholdersEquity`	$6.24B	USD	Point-in-time
Total American Tower Corporation equity	`StockholdersEquity`	$6.76B	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$586.60M	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$212.30M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.05B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.83B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.98B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.71B	USD	Point-in-time
TOTAL	`LiabilitiesAndStockholdersEquity`	$33.21B	USD	Point-in-time
TOTAL	`LiabilitiesAndStockholdersEquity`	$30.88B	USD	Point-in-time

Income Statement 139 line items

Line Item	Tag	Value	Unit	Period
Property	`OperatingLeasesIncomeStatementLeaseRevenue`	$4.68B	USD	Annual
Property	`OperatingLeasesIncomeStatementLeaseRevenue`	$6.57B	USD	Annual
Property	`OperatingLeasesIncomeStatementLeaseRevenue`	$5.71B	USD	Annual
Services	`SalesRevenueServicesNet`	$91.10M	USD	Annual
Services	`SalesRevenueServicesNet`	$98.00M	USD	Annual
Services	`SalesRevenueServicesNet`	$72.60M	USD	Annual
Total operating revenues	`SalesRevenueNet`	$1.66B	USD	1 Quarter
Total operating revenues	`SalesRevenueNet`	$1.44B	USD	1 Quarter
Total operating revenues	`SalesRevenueNet`	$1.62B	USD	1 Quarter
Total operating revenues	`SalesRevenueNet`	$1.51B	USD	1 Quarter
Total operating revenues	`SalesRevenueNet`	$5.79B	USD	Annual
Total operating revenues	`SalesRevenueNet`	$6.66B	USD	Annual
Total operating revenues	`SalesRevenueNet`	$1.70B	USD	1 Quarter
Total operating revenues	`SalesRevenueNet`	$1.54B	USD	1 Quarter
Total operating revenues	`SalesRevenueNet`	$1.29B	USD	1 Quarter
Total operating revenues	`SalesRevenueNet`	$1.68B	USD	1 Quarter
Total operating revenues	`SalesRevenueNet`	$4.77B	USD	Annual
Stock-based compensation expense	`ShareBasedCompensation`	$108.50M	USD	Annual
Property (including stock-based compensation expense of $2.1, $1.7 and $1.6, respectively)	`DirectCostsOfLeasedAndRentedPropertyOrEquipment`	$1.76B	USD	Annual
Property (including stock-based compensation expense of $2.1, $1.7 and $1.6, respectively)	`DirectCostsOfLeasedAndRentedPropertyOrEquipment`	$2.02B	USD	Annual
Stock-based compensation expense	`ShareBasedCompensation`	$90.50M	USD	Annual
Stock-based compensation expense	`ShareBasedCompensation`	$89.90M	USD	Annual
Property (including stock-based compensation expense of $2.1, $1.7 and $1.6, respectively)	`DirectCostsOfLeasedAndRentedPropertyOrEquipment`	$1.28B	USD	Annual
Services (including stock-based compensation expense of $0.8, $0.7 and $0.4, respectively)	`CostOfServices`	$27.70M	USD	Annual
Services (including stock-based compensation expense of $0.8, $0.7 and $0.4, respectively)	`CostOfServices`	$34.60M	USD	Annual
Services (including stock-based compensation expense of $0.8, $0.7 and $0.4, respectively)	`CostOfServices`	$33.40M	USD	Annual
Depreciation, amortization and accretion	`DepreciationAmortizationAndAccretionNet`	$1.53B	USD	Annual
Depreciation, amortization and accretion	`DepreciationAmortizationAndAccretionNet`	$1.29B	USD	Annual
Depreciation, amortization and accretion	`DepreciationAmortizationAndAccretionNet`	$1.72B	USD	Annual
Selling, general, administrative and development expense (including stock-based compensation expense of $105.6, $87.5 and $88.5, respectively)	`SellingGeneralAndAdministrativeExpense`	$543.40M	USD	Annual
Selling, general, administrative and development expense (including stock-based compensation expense of $105.6, $87.5 and $88.5, respectively)	`SellingGeneralAndAdministrativeExpense`	$637.00M	USD	Annual
Selling, general, administrative and development expense (including stock-based compensation expense of $105.6, $87.5 and $88.5, respectively)	`SellingGeneralAndAdministrativeExpense`	$497.80M	USD	Annual
Other operating expenses	`OtherCostAndExpenseOperating`	$256.00M	USD	Annual
Other operating expenses	`OtherCostAndExpenseOperating`	$73.30M	USD	Annual
Other operating expenses	`OtherCostAndExpenseOperating`	$66.80M	USD	Annual
Total operating expenses	`CostsAndExpenses`	$4.67B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$3.16B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$3.93B	USD	Annual
OPERATING INCOME	`OperatingIncomeLoss`	$576.90M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$451.90M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$432.80M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$531.40M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$2.00B	USD	Annual
OPERATING INCOME	`OperatingIncomeLoss`	$479.10M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$329.00M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$1.61B	USD	Annual
OPERATING INCOME	`OperatingIncomeLoss`	$489.30M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$1.85B	USD	Annual
OPERATING INCOME	`OperatingIncomeLoss`	$561.10M	USD	1 Quarter
(Loss) gain on retirement of long-term obligations	`GainsLossesOnExtinguishmentOfDebt`	$1.20M	USD	Annual
(Loss) gain on retirement of long-term obligations	`GainsLossesOnExtinguishmentOfDebt`	$-79.60M	USD	Annual
(Loss) gain on retirement of long-term obligations	`GainsLossesOnExtinguishmentOfDebt`	$-70.20M	USD	Annual
Other income (expense) (including unrealized foreign currency gains (losses) of $26.5, ($23.4), and ($71.5), respectively)	`OtherNonoperatingIncomeExpense`	$31.30M	USD	Annual
Other income (expense) (including unrealized foreign currency gains (losses) of $26.5, ($23.4), and ($71.5), respectively)	`OtherNonoperatingIncomeExpense`	$-135.00M	USD	Annual
Other income (expense) (including unrealized foreign currency gains (losses) of $26.5, ($23.4), and ($71.5), respectively)	`OtherNonoperatingIncomeExpense`	$-47.70M	USD	Annual
Total other expense	`NonoperatingIncomeExpense`	$-782.80M	USD	Annual
Total other expense	`NonoperatingIncomeExpense`	$-727.10M	USD	Annual
Total other expense	`NonoperatingIncomeExpense`	$-742.30M	USD	Annual
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$830.00M	USD	Annual
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$1.26B	USD	Annual
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$1.13B	USD	Annual
Income tax provision	`IncomeTaxExpenseBenefit`	$158.00M	USD	Annual
Income tax provision	`IncomeTaxExpenseBenefit`	$30.70M	USD	Annual
Income tax provision	`IncomeTaxExpenseBenefit`	$155.50M	USD	Annual
NET INCOME	`ProfitLoss`	$388.50M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$672.00M	USD	Annual
NET INCOME	`ProfitLoss`	$232.90M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$281.30M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$334.70M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$192.50M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$307.40M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$1.23B	USD	Annual
NET INCOME	`ProfitLoss`	$194.80M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$970.40M	USD	Annual
NET INCOME	`ProfitLoss`	$263.70M	USD	1 Quarter
Net loss (income) attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$14.00M	USD	Annual
Net loss (income) attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-13.50M	USD	Annual
Net loss (income) attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-13.10M	USD	Annual
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION STOCKHOLDERS	`NetIncomeLoss`	$187.60M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION STOCKHOLDERS	`NetIncomeLoss`	$316.10M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION STOCKHOLDERS	`NetIncomeLoss`	$367.00M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION STOCKHOLDERS	`NetIncomeLoss`	$238.50M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION STOCKHOLDERS	`NetIncomeLoss`	$956.40M	USD	Annual
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION STOCKHOLDERS	`NetIncomeLoss`	$275.20M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION STOCKHOLDERS	`NetIncomeLoss`	$317.30M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION STOCKHOLDERS	`NetIncomeLoss`	$264.50M	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`	$685.10M	USD	Annual
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION STOCKHOLDERS	`NetIncomeLoss`	$229.20M	USD	1 Quarter
Dividends on preferred stock	`PreferredStockDividendsIncomeStatementImpact`	$26.80M	USD	1 Quarter
Dividends on preferred stock	`PreferredStockDividendsIncomeStatementImpact`	$87.40M	USD	Annual
Dividends on preferred stock	`PreferredStockDividendsIncomeStatementImpact`	$26.80M	USD	1 Quarter
Dividends on preferred stock	`PreferredStockDividendsIncomeStatementImpact`	$107.10M	USD	Annual
Dividends on preferred stock	`PreferredStockDividendsIncomeStatementImpact`	$18.90M	USD	1 Quarter
Dividends on preferred stock	`PreferredStockDividendsIncomeStatementImpact`	$18.90M	USD	1 Quarter
Dividends on preferred stock	`PreferredStockDividendsIncomeStatementImpact`	$90.20M	USD	Annual
Dividends on preferred stock	`PreferredStockDividendsIncomeStatementImpact`	$26.80M	USD	1 Quarter
Dividends on preferred stock	`PreferredStockDividendsIncomeStatementImpact`	$26.80M	USD	1 Quarter
Dividends on preferred stock	`PreferredStockDividendsIncomeStatementImpact`	$22.80M	USD	1 Quarter
Dividends on preferred stock	`PreferredStockDividendsIncomeStatementImpact`	$26.80M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$160.80M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$298.40M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$219.60M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$202.40M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$594.90M	USD	Annual
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$1.15B	USD	Annual
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$849.30M	USD	Annual
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$248.40M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$289.30M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$237.70M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$344.20M	USD	1 Quarter
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.51	USD	1 Quarter
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareBasic`	$2.00	USD	Annual
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`	$0.38	USD	1 Quarter
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.81	USD	1 Quarter
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.48	USD	1 Quarter
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.68	USD	1 Quarter
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.59	USD	1 Quarter
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.56	USD	1 Quarter
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.70	USD	1 Quarter
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareBasic`	$1.42	USD	Annual
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.51	USD	1 Quarter
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.80	USD	1 Quarter
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.55	USD	1 Quarter
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.47	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`	$1.98	USD	Annual
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.58	USD	1 Quarter
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$1.41	USD	Annual
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.37	USD	1 Quarter
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.67	USD	1 Quarter
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$2.67	USD	Annual
BASIC (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	428.18M	shares	Annual
BASIC (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	425.14M	shares	Annual
BASIC (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	418.91M	shares	Annual
DILUTED (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	429.28M	shares	Annual
DILUTED (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	431.69M	shares	Annual
DILUTED (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	423.01M	shares	Annual

Cash Flow Statement 145 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$388.50M	USD	1 Quarter
Net income	`ProfitLoss`	$672.00M	USD	Annual
Net income	`ProfitLoss`	$232.90M	USD	1 Quarter
Net income	`ProfitLoss`	$281.30M	USD	1 Quarter
Net income	`ProfitLoss`	$334.70M	USD	1 Quarter
Net income	`ProfitLoss`	$192.50M	USD	1 Quarter
Net income	`ProfitLoss`	$307.40M	USD	1 Quarter
Net income	`ProfitLoss`	$1.23B	USD	Annual
Net income	`ProfitLoss`	$194.80M	USD	1 Quarter
Net income	`ProfitLoss`	$970.40M	USD	Annual
Net income	`ProfitLoss`	$263.70M	USD	1 Quarter
Depreciation, amortization and accretion	`DepreciationAmortizationAndAccretionNet`	$1.53B	USD	Annual
Depreciation, amortization and accretion	`DepreciationAmortizationAndAccretionNet`	$1.29B	USD	Annual
Depreciation, amortization and accretion	`DepreciationAmortizationAndAccretionNet`	$1.72B	USD	Annual
Stock-based compensation expense	`ShareBasedCompensation`	$108.50M	USD	Annual
Stock-based compensation expense	`ShareBasedCompensation`	$90.50M	USD	Annual
Stock-based compensation expense	`ShareBasedCompensation`	$89.90M	USD	Annual
(Gain) loss on investments, unrealized foreign currency loss and other non-cash expense	`LossGainOnInvestmentsAndOtherNonCashIncomeExpense`	$127.40M	USD	Annual
(Gain) loss on investments, unrealized foreign currency loss and other non-cash expense	`LossGainOnInvestmentsAndOtherNonCashIncomeExpense`	$-18.00M	USD	Annual
(Gain) loss on investments, unrealized foreign currency loss and other non-cash expense	`LossGainOnInvestmentsAndOtherNonCashIncomeExpense`	$146.20M	USD	Annual
Impairments, net loss on sale of long-lived assets, non-cash restructuring and merger related expenses	`RestructuringCostsAndAssetImpairmentCharges`	$29.90M	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`	$50.70M	USD	Annual
Loss (gain) on early retirement of long-term obligations	`ExtinguishmentOfDebtGainLossNetOfTax`	$-79.80M	USD	Annual
Loss (gain) on early retirement of long-term obligations	`ExtinguishmentOfDebtGainLossNetOfTax`	$-70.20M	USD	Annual
Loss (gain) on early retirement of long-term obligations	`ExtinguishmentOfDebtGainLossNetOfTax`	$1.20M	USD	Annual
Amortization of deferred financing costs, debt discounts and premiums and other non-cash interest	`AmortizationOfFinancingCostsAndDiscounts`	$6.90M	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`	$17.70M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxesAndTaxCredits`	$27.00M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxesAndTaxCredits`	$-86.60M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxesAndTaxCredits`	$7.80M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$56.30M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$-11.40M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$191.10M	USD	Annual
Prepaid and other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$91.10M	USD	Annual
Prepaid and other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$179.90M	USD	Annual
Prepaid and other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$80.00M	USD	Annual
Deferred rent asset	`StraightLineRent`	$131.70M	USD	Annual
Deferred rent asset	`StraightLineRent`	$194.40M	USD	Annual
Deferred rent asset	`StraightLineRent`	$155.00M	USD	Annual
Accounts payable and accrued expenses	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-42.90M	USD	Annual
Accounts payable and accrued expenses	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$95.90M	USD	Annual
Accounts payable and accrued expenses	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$95.80M	USD	Annual
Accrued interest	`IncreaseDecreaseInInterestPayableNet`	$9.20M	USD	Annual
Accrued interest	`IncreaseDecreaseInInterestPayableNet`	$34.40M	USD	Annual
Accrued interest	`IncreaseDecreaseInInterestPayableNet`	$-15.60M	USD	Annual
Unearned revenue	`IncreaseDecreaseInDeferredRevenue`	$59.30M	USD	Annual
Unearned revenue	`IncreaseDecreaseInDeferredRevenue`	$16.60M	USD	Annual
Unearned revenue	`IncreaseDecreaseInDeferredRevenue`	$12.90M	USD	Annual
Deferred rent liability	`IncreaseDecreaseInDeferredRentLiability`	$-62.30M	USD	Annual
Deferred rent liability	`IncreaseDecreaseInDeferredRentLiability`	$-56.10M	USD	Annual
Deferred rent liability	`IncreaseDecreaseInDeferredRentLiability`	$-67.80M	USD	Annual
Other non-current liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$18.60M	USD	Annual
Other non-current liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$-13.40M	USD	Annual
Other non-current liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$1.60M	USD	Annual
Cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$2.70B	USD	Annual
Cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$2.17B	USD	Annual
Cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$2.93B	USD	Annual
Payments for purchase of property and equipment and construction activities	`PaymentsToAcquirePropertyPlantAndEquipment`	$682.50M	USD	Annual
Payments for purchase of property and equipment and construction activities	`PaymentsToAcquirePropertyPlantAndEquipment`	$728.80M	USD	Annual
Payments for purchase of property and equipment and construction activities	`PaymentsToAcquirePropertyPlantAndEquipment`	$803.60M	USD	Annual
Payments for acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$2.01B	USD	Annual
Payments for acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$1.41B	USD	Annual
Payments for acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$1.96B	USD	Annual
Payment for Verizon transaction	`PaymentsToAcquireBusinessesGross`	$5.06B	USD	Annual
Payment for Verizon transaction	`PaymentsToAcquireBusinessesGross`	$4.70M	USD	Annual
Payment for Verizon transaction	`PaymentsToAcquireBusinessesGross`	-	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`	$1.03B	USD	Annual
Proceeds from sales of short-term investments and other non-current assets	`ProceedsFromSaleOfAvailableForSaleSecuritiesAndOtherProductiveAssets`	$13.10M	USD	Annual
Payments for short-term investments	`PaymentsToAcquireShortTermInvestments`	-	USD	Annual
Payments for short-term investments	`PaymentsToAcquireShortTermInvestments`	$800.00K	USD	Annual
Payments for short-term investments	`PaymentsToAcquireShortTermInvestments`	$1.02B	USD	Annual
Deposits and other	`PaymentsForProceedsFromOtherInvestingActivities`	$16.10M	USD	Annual
Deposits and other	`PaymentsForProceedsFromOtherInvestingActivities`	$5.00M	USD	Annual
Deposits and other	`PaymentsForProceedsFromOtherInvestingActivities`	$1.80M	USD	Annual
Cash used for investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-7.74B	USD	Annual
Cash used for investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-2.80B	USD	Annual
Cash used for investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-2.10B	USD	Annual
Proceeds from short-term borrowings, net	`ProceedsFromRepaymentsOfShortTermDebt`	$9.00M	USD	Annual
Proceeds from short-term borrowings, net	`ProceedsFromRepaymentsOfShortTermDebt`	-	USD	Annual
Proceeds from short-term borrowings, net	`ProceedsFromRepaymentsOfShortTermDebt`	-	USD	Annual
Borrowings under credit facilities	`ProceedsFromLinesOfCredit`	$6.13B	USD	Annual
Borrowings under credit facilities	`ProceedsFromLinesOfCredit`	$2.45B	USD	Annual
Borrowings under credit facilities	`ProceedsFromLinesOfCredit`	$5.36B	USD	Annual
Proceeds from issuance of senior notes, net	`ProceedsFromIssuanceOfSeniorLongTermDebt`	$3.24B	USD	Annual
Proceeds from issuance of senior notes, net	`ProceedsFromIssuanceOfSeniorLongTermDebt`	$1.49B	USD	Annual
Proceeds from issuance of senior notes, net	`ProceedsFromIssuanceOfSeniorLongTermDebt`	$2.67B	USD	Annual
Proceeds from term loan	`ProceedsFromIssuanceOfUnsecuredDebt`	$500.00M	USD	Annual
Proceeds from term loan	`ProceedsFromIssuanceOfUnsecuredDebt`	-	USD	Annual
Proceeds from term loan	`ProceedsFromIssuanceOfUnsecuredDebt`	-	USD	Annual
Proceeds from other borrowings	`ProceedsFromIssuanceOfLongTermDebt`	-	USD	Annual
Proceeds from other borrowings	`ProceedsFromIssuanceOfLongTermDebt`	$54.50M	USD	Annual
Proceeds from other borrowings	`ProceedsFromIssuanceOfLongTermDebt`	-	USD	Annual
Proceeds from issuance of securities in securitization transaction	`ProceedsFromIssuanceOfSecuredDebt`	-	USD	Annual
Proceeds from issuance of securities in securitization transaction	`ProceedsFromIssuanceOfSecuredDebt`	$875.00M	USD	Annual
Proceeds from issuance of securities in securitization transaction	`ProceedsFromIssuanceOfSecuredDebt`	-	USD	Annual
Repayments of notes payable, credit facilities, term loan, senior notes and capital leases	`RepaymentsOfLongTermDebtAndCapitalSecurities`	$5.09B	USD	Annual
Repayments of notes payable, credit facilities, term loan, senior notes and capital leases	`RepaymentsOfLongTermDebtAndCapitalSecurities`	$6.48B	USD	Annual
Repayments of notes payable, credit facilities, term loan, senior notes and capital leases	`RepaymentsOfLongTermDebtAndCapitalSecurities`	$6.39B	USD	Annual
Contributions from noncontrolling interest holders, net	`ProceedsFromPaymentsToMinorityShareholders`	$264.30M	USD	Annual
Contributions from noncontrolling interest holders, net	`ProceedsFromPaymentsToMinorityShareholders`	$7.20M	USD	Annual
Contributions from noncontrolling interest holders, net	`ProceedsFromPaymentsToMinorityShareholders`	$238.50M	USD	Annual
Purchases of common stock	`PaymentsForRepurchaseOfCommonStock`	$766.30M	USD	Annual
Purchases of common stock	`PaymentsForRepurchaseOfCommonStock`	-	USD	Annual
Purchases of common stock	`PaymentsForRepurchaseOfCommonStock`	-	USD	Annual
Proceeds from stock options and stock purchase plan	`ProceedsFromIssuanceOrSaleOfEquity`	$50.70M	USD	Annual
Proceeds from stock options and stock purchase plan	`ProceedsFromIssuanceOrSaleOfEquity`	$119.70M	USD	Annual
Proceeds from stock options and stock purchase plan	`ProceedsFromIssuanceOrSaleOfEquity`	$92.50M	USD	Annual
Distributions paid on common stock	`PaymentsOfDividendsCommonStock`	$710.90M	USD	Annual
Distributions paid on common stock	`PaymentsOfDividendsCommonStock`	$1.07B	USD	Annual
Distributions paid on common stock	`PaymentsOfDividendsCommonStock`	$886.10M	USD	Annual
Distributions paid on preferred stock	`PaymentsOfDividendsPreferredStockAndPreferenceStock`	$84.60M	USD	Annual
Distributions paid on preferred stock	`PaymentsOfDividendsPreferredStockAndPreferenceStock`	$107.10M	USD	Annual
Distributions paid on preferred stock	`PaymentsOfDividendsPreferredStockAndPreferenceStock`	$91.40M	USD	Annual
Proceeds from the issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	-	USD	Annual
Proceeds from the issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	-	USD	Annual
Proceeds from the issuance of common stock, net	`ProceedsFromIssuanceOfCommonStock`	$2.44B	USD	Annual
Proceeds from the issuance of preferred stock, net	`ProceedsFromIssuanceOfPreferredStockAndPreferenceStock`	-	USD	Annual
Proceeds from the issuance of preferred stock, net	`ProceedsFromIssuanceOfPreferredStockAndPreferenceStock`	-	USD	Annual
Proceeds from the issuance of preferred stock, net	`ProceedsFromIssuanceOfPreferredStockAndPreferenceStock`	$1.34B	USD	Annual
Payment for early retirement of long-term obligations	`PaymentsOfDebtExtinguishmentCosts`	$75.30M	USD	Annual
Payment for early retirement of long-term obligations	`PaymentsOfDebtExtinguishmentCosts`	$85.70M	USD	Annual
Payment for early retirement of long-term obligations	`PaymentsOfDebtExtinguishmentCosts`	$100.00K	USD	Annual
Deferred financing costs and other financing activities	`ProceedsFromPaymentsForOtherFinancingActivities`	$-25.80M	USD	Annual
Deferred financing costs and other financing activities	`ProceedsFromPaymentsForOtherFinancingActivities`	$-26.50M	USD	Annual
Deferred financing costs and other financing activities	`ProceedsFromPaymentsForOtherFinancingActivities`	$-40.00M	USD	Annual
Cash (used for) provided by financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-99.30M	USD	Annual
Cash (used for) provided by financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-113.00M	USD	Annual
Cash (used for) provided by financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$5.59B	USD	Annual
Net effect of changes in foreign currency exchange rates on cash and cash equivalents, and restricted cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-26.50M	USD	Annual
Net effect of changes in foreign currency exchange rates on cash and cash equivalents, and restricted cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-29.10M	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 (DECREASE) IN CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$18.40M	USD	Annual
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-10.80M	USD	Annual
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$473.60M	USD	Annual
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`	$462.90M	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`	$473.70M	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`	$462.90M	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`	$473.70M	USD	Point-in-time

Stockholders Equity 44 line items

Line Item	Tag	Value	Unit	Period
BALANCE	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.05B	USD	Point-in-time
BALANCE	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.83B	USD	Point-in-time
BALANCE	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.98B	USD	Point-in-time
BALANCE	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.71B	USD	Point-in-time
Stock-based compensation related activity	`StockIssuedDuringPeriodValueShareBasedCompensation`	$195.00M	USD	Annual
Stock-based compensation related activity	`StockIssuedDuringPeriodValueShareBasedCompensation`	$155.10M	USD	Annual
Stock-based compensation related activity	`StockIssuedDuringPeriodValueShareBasedCompensation`	$117.20M	USD	Annual
Issuance of common stockstock purchase plan	`StockIssuedDuringPeriodValueEmployeeStockPurchasePlan`	$7.50M	USD	Annual
Issuance of common stockstock purchase plan	`StockIssuedDuringPeriodValueEmployeeStockPurchasePlan`	$6.60M	USD	Annual
Issuance of common stockstock purchase plan	`StockIssuedDuringPeriodValueEmployeeStockPurchasePlan`	$9.00M	USD	Annual
Issuance of stock	`StockIssuedDuringPeriodValueNewIssues`	$120.80M	USD	Annual
Issuance of stock	`StockIssuedDuringPeriodValueNewIssues`	$2.44B	USD	Annual
Conversion of preferred stock	`StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments`	-	USD	Annual
Treasury stock activity	`TreasuryStockValueAcquiredCostMethod`	$766.30M	USD	Annual
Changes in fair value of cash flow hedges, net of tax	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$900.00K	USD	Annual
Changes in fair value of cash flow hedges, net of tax	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$-400.00K	USD	Annual
Changes in fair value of cash flow hedges, net of tax	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$-400.00K	USD	Annual
Reclassification of unrealized gains on cash flow hedges to net income, net of tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-2.40M	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`	$300.00K	USD	Annual
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Less Amount Reclassified to Additional Paid in Capital	`OtherComprehensiveIncomeLossForeignCurrencyTransactionandTranslationAdjustmentNetofTaxLessAmountReclassifiedtoAdditionalPaidinCapital`	$-179.40M	USD	Annual
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Less Amount Reclassified to Additional Paid in Capital	`OtherComprehensiveIncomeLossForeignCurrencyTransactionandTranslationAdjustmentNetofTaxLessAmountReclassifiedtoAdditionalPaidinCapital`	$76.10M	USD	Annual
Foreign currency translation adjustment, net of tax	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$144.40M	USD	Annual
Foreign currency translation adjustment, net of tax	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-202.90M	USD	Annual
Foreign currency translation adjustment, net of tax	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-1.08B	USD	Annual
Contributions from noncontrolling interest	`NoncontrollingInterestIncreaseFromBusinessCombination`	$314.10M	USD	Annual
Contributions from noncontrolling interest	`NoncontrollingInterestIncreaseFromBusinessCombination`	$8.10M	USD	Annual
Contributions from noncontrolling interest	`NoncontrollingInterestIncreaseFromBusinessCombination`	$239.50M	USD	Annual
Distributions to noncontrolling interest	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$14.30M	USD	Annual
Distributions to noncontrolling interest	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$900.00K	USD	Annual
Distributions to noncontrolling interest	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$1.00M	USD	Annual
Common stock distributions declared	`DividendsCommonStockCash`	$769.50M	USD	Annual
Common stock distributions declared	`DividendsCommonStockCash`	$927.80M	USD	Annual
Common stock distributions declared	`DividendsCommonStockCash`	$1.13B	USD	Annual
Preferred stock dividends declared	`DividendsPreferredStockCash`	$76.80M	USD	Annual
Preferred stock dividends declared	`DividendsPreferredStockCash`	$107.10M	USD	Annual
Preferred stock dividends declared	`DividendsPreferredStockCash`	$91.40M	USD	Annual
Net income	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$956.50M	USD	Annual
Net income	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$672.00M	USD	Annual
Net income	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$1.26B	USD	Annual
BALANCE	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.05B	USD	Point-in-time
BALANCE	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.83B	USD	Point-in-time
BALANCE	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.98B	USD	Point-in-time
BALANCE	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.71B	USD	Point-in-time

Comprehensive Income 41 line items

Line Item	Tag	Value	Unit	Period
Net change in fair value of cash flow hedges, tax	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax`	-	USD	Annual
Net income	`ProfitLoss`	$388.50M	USD	1 Quarter
Net income	`ProfitLoss`	$672.00M	USD	Annual
Net income	`ProfitLoss`	$232.90M	USD	1 Quarter
Net change in fair value of cash flow hedges, tax	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax`	-	USD	Annual
Net income	`ProfitLoss`	$281.30M	USD	1 Quarter
Net income	`ProfitLoss`	$334.70M	USD	1 Quarter
Net change in fair value of cash flow hedges, tax	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax`	$100.00K	USD	Annual
Net income	`ProfitLoss`	$192.50M	USD	1 Quarter
Net income	`ProfitLoss`	$307.40M	USD	1 Quarter
Net income	`ProfitLoss`	$1.23B	USD	Annual
Net income	`ProfitLoss`	$194.80M	USD	1 Quarter
Net income	`ProfitLoss`	$970.40M	USD	Annual
Net income	`ProfitLoss`	$263.70M	USD	1 Quarter
Reclassification of unrealized losses on cash flow hedges to net income, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	$100.00K	USD	Annual
Reclassification of unrealized losses on cash flow hedges to net income, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	-	USD	Annual
Reclassification of unrealized losses on cash flow hedges to net income, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	-	USD	Annual
Foreign currency translation adjustments, tax	`OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax`	$-24.90M	USD	Annual
Changes in fair value of cash flow hedges, net of tax expense of $0, $0 and $0.1, respectively	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$900.00K	USD	Annual
Foreign currency translation adjustments, tax	`OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax`	$1.00M	USD	Annual
Foreign currency translation adjustments, tax	`OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax`	$3.80M	USD	Annual
Changes in fair value of cash flow hedges, net of tax expense of $0, $0 and $0.1, respectively	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$-400.00K	USD	Annual
Changes in fair value of cash flow hedges, net of tax expense of $0, $0 and $0.1, respectively	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$-400.00K	USD	Annual
Reclassification of unrealized losses on cash flow hedges to net income, net of tax expense of $0, $0 and $0.1, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-2.40M	USD	Annual
Reclassification of unrealized losses on cash flow hedges to net income, net of tax expense of $0, $0 and $0.1, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$100.00K	USD	Annual
Reclassification of unrealized losses on cash flow hedges to net income, net of tax expense of $0, $0 and $0.1, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$300.00K	USD	Annual
Foreign currency translation adjustments, net of tax expense (benefit) of $1.0, $3.8 million, and $(24.9), respectively	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$144.40M	USD	Annual
Foreign currency translation adjustments, net of tax expense (benefit) of $1.0, $3.8 million, and $(24.9), respectively	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-202.90M	USD	Annual
Foreign currency translation adjustments, net of tax expense (benefit) of $1.0, $3.8 million, and $(24.9), respectively	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-1.08B	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-203.60M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-1.08B	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$143.90M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$766.80M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$1.37B	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-403.60M	USD	Annual
Comprehensive (income) loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-45.90M	USD	Annual
Comprehensive (income) loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$109.40M	USD	Annual
Comprehensive (income) loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-18.20M	USD	Annual
Comprehensive income (loss) attributable to American Tower Corporation stockholders	`ComprehensiveIncomeNetOfTax`	$-357.70M	USD	Annual
Comprehensive income (loss) attributable to American Tower Corporation stockholders	`ComprehensiveIncomeNetOfTax`	$1.26B	USD	Annual
Comprehensive income (loss) attributable to American Tower Corporation stockholders	`ComprehensiveIncomeNetOfTax`	$785.00M	USD	Annual

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