Number Of Annual Renewal Periods

No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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LONG-TERM OBLIGATIONS - Credit Facilities and Term Loans (Details) € in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($) renewalPeriod	Mar. 31, 2024 EUR (€)	Dec. 31, 2023 USD ($)
2021 EUR Three Year Delayed Draw Term Loan \| Unsecured debt
Line of Credit Facility [Line Items]
Debt instrument term	3 years
American Tower Corporation
Line of Credit Facility [Line Items]
Long-term debt	$ 36,806.5		$ 36,472.0
American Tower Corporation \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Number of optional renewal periods \| renewalPeriod	2
American Tower Corporation \| 2021 Multicurrency Credit Facility \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Long-term debt	$ 1,011.6		723.4
Outstanding principal balance	1,011.6
Undrawn letters of credit	$ 3.5
Current commitment fee, percentage	0.11%
American Tower Corporation \| 2021 Multicurrency Credit Facility \| Revolving Credit Facility \| SOFR
Line of Credit Facility [Line Items]
Current margin over LIBOR or EURIBOR	1.125%
American Tower Corporation \| 2021 Credit Facility \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Long-term debt	$ 2,038.4		1,603.4
Outstanding principal balance	2,038.4
Undrawn letters of credit	$ 30.4
Current commitment fee, percentage	0.11%
American Tower Corporation \| 2021 Credit Facility \| Revolving Credit Facility \| SOFR
Line of Credit Facility [Line Items]
Current margin over LIBOR or EURIBOR	1.125%
American Tower Corporation \| 2021 Term Loan \| Unsecured debt
Line of Credit Facility [Line Items]
Long-term debt	$ 997.2		997.0
Outstanding principal balance	$ 1,000.0
American Tower Corporation \| 2021 Term Loan \| Unsecured debt \| SOFR
Line of Credit Facility [Line Items]
Current margin over LIBOR or EURIBOR	1.125%
American Tower Corporation \| 2021 EUR Three Year Delayed Draw Term Loan \| Unsecured debt
Line of Credit Facility [Line Items]
Long-term debt	$ 890.1	€ 825.0	$ 910.7
Debt instrument term	3 years
Outstanding principal balance	$ 890.2
American Tower Corporation \| 2021 EUR Three Year Delayed Draw Term Loan \| Unsecured debt \| EURIBOR
Line of Credit Facility [Line Items]
Current margin over LIBOR or EURIBOR	1.125%