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LONG-TERM OBLIGATIONS (Tables) | 3 Months Ended
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Mar. 31, 2025
Debt Disclosure [Abstract] |
Schedule of Long-Term Debt Instruments | Outstanding amounts under the Company’s long-term obligations, reflecting discounts, premiums and debt issuance costs, consisted of the following:
| As of |  |
| March 31, 2025 |  | December 31, 2024 |  | Maturity Date
2021 Multicurrency Credit Facility (1) | $ | 50.0 |  |  | $ | — |  |  | January 28, 2028
2021 Term Loan (1) | 997.5 |  |  | 997.9 |  |  | January 28, 2028
2021 Credit Facility (1) | 360.0 |  |  | — |  |  | January 28, 2030
2.950% senior notes (2) | — |  |  | 650.0 |  |  | January 15, 2025
2.400% senior notes (3) | — |  |  | 749.7 |  |  | March 15, 2025
1.375% senior notes (4) (5) | 540.8 |  |  | 517.3 |  |  | April 4, 2025
4.000% senior notes | 749.8 |  |  | 749.4 |  |  | June 1, 2025
1.300% senior notes | 499.5 |  |  | 499.3 |  |  | September 15, 2025
4.400% senior notes | 499.5 |  |  | 499.3 |  |  | February 15, 2026
1.600% senior notes | 698.8 |  |  | 698.5 |  |  | April 15, 2026
1.950% senior notes (5) | 539.7 |  |  | 516.4 |  |  | May 22, 2026
1.450% senior notes | 597.8 |  |  | 597.4 |  |  | September 15, 2026
3.375% senior notes | 997.0 |  |  | 996.6 |  |  | October 15, 2026
3.125% senior notes | 399.4 |  |  | 399.3 |  |  | January 15, 2027
2.750% senior notes | 748.2 |  |  | 748.0 |  |  | January 15, 2027
0.450% senior notes (5) | 809.1 |  |  | 774.1 |  |  | January 15, 2027
0.400% senior notes (5) | 538.5 |  |  | 515.0 |  |  | February 15, 2027
3.650% senior notes | 646.8 |  |  | 646.4 |  |  | March 15, 2027
4.125% senior notes (5) | 646.6 |  |  | 618.5 |  |  | May 16, 2027
3.55% senior notes | 748.1 |  |  | 747.9 |  |  | July 15, 2027
3.600% senior notes | 697.2 |  |  | 697.0 |  |  | January 15, 2028
0.500% senior notes (5) | 807.7 |  |  | 772.6 |  |  | January 15, 2028
1.500% senior notes | 648.0 |  |  | 647.8 |  |  | January 31, 2028
5.500% senior notes | 695.4 |  |  | 695.0 |  |  | March 15, 2028
5.250% senior notes | 645.5 |  |  | 645.2 |  |  | July 15, 2028
5.800% senior notes | 744.9 |  |  | 744.6 |  |  | November 15, 2028
5.200% senior notes | 644.1 |  |  | 643.7 |  |  | February 15, 2029
3.950% senior notes | 595.1 |  |  | 594.8 |  |  | March 15, 2029
0.875% senior notes (5) | 808.0 |  |  | 773.0 |  |  | May 21, 2029
3.800% senior notes | 1,641.0 |  |  | 1,640.5 |  |  | August 15, 2029
2.900% senior notes | 745.4 |  |  | 745.1 |  |  | January 15, 2030
5.000% senior notes | 593.5 |  |  | 593.2 |  |  | January 31, 2030
4.900% senior notes | 643.9 |  |  | — |  |  | March 15, 2030
3.900% senior notes (5) | 536.2 |  |  | 512.9 |  |  | May 16, 2030
2.100% senior notes | 744.4 |  |  | 744.1 |  |  | June 15, 2030
0.950% senior notes (5) | 536.0 |  |  | 512.6 |  |  | October 5, 2030
1.875% senior notes | 794.5 |  |  | 794.3 |  |  | October 15, 2030
2.700% senior notes | 695.8 |  |  | 695.6 |  |  | April 15, 2031
4.625% senior notes (5) | 535.0 |  |  | 511.7 |  |  | May 16, 2031
2.300% senior notes | 693.8 |  |  | 693.6 |  |  | September 15, 2031
1.000% senior notes (5) | 697.9 |  |  | 667.6 |  |  | January 15, 2032
4.050% senior notes | 643.9 |  |  | 643.7 |  |  | March 15, 2032
5.650% senior notes | 791.6 |  |  | 791.4 |  |  | March 15, 2033
1.250% senior notes (5) | 535.4 |  |  | 512.1 |  |  | May 21, 2033
5.550% senior notes | 841.6 |  |  | 841.4 |  |  | July 15, 2033
5.900% senior notes | 742.3 |  |  | 742.2 |  |  | November 15, 2033
5.450% senior notes | 640.8 |  |  | 640.6 |  |  | February 15, 2034
4.100% senior notes (5) | 533.8 |  |  | 510.5 |  |  | May 16, 2034
5.400% senior notes | 592.0 |  |  | 591.9 |  |  | January 31, 2035
5.350% senior notes | 346.1 |  |  | — |  |  | March 15, 2035
3.700% senior notes | 592.6 |  |  | 592.6 |  |  | October 15, 2049
3.100% senior notes | 1,038.9 |  |  | 1,038.8 |  |  | June 15, 2050
2.950% senior notes | 1,024.0 |  |  | 1,023.8 |  |  | January 15, 2051
Total American Tower Corporation debt | 34,533.4 |  |  | 34,174.9 |  |  |
Series 2015-2 notes (6) | 524.9 |  |  | 524.7 |  |  | June 16, 2025
Series 2018-1A securities (7) | 497.8 |  |  | 497.6 |  |  | March 15, 2028
Series 2023-1A securities (8) | 1,288.9 |  |  | 1,288.0 |  |  | March 15, 2028
Other subsidiary debt (9) | 1.2 |  |  | — |  |  | March 24, 2033
Total American Tower subsidiary debt | 2,312.8 |  |  | 2,310.3 |  |  |
Finance lease obligations | 16.1 |  |  | 16.6 |  |  |
Total | 36,862.3 |  |  | 36,501.8 |  |  |
Less current portion of long-term obligations | (2,816.9) |  |  | (3,693.0) |  |  |
Long-term obligations | $ | 34,045.4 |  |  | $ | 32,808.8 |  |  |
_______________ (1)Accrues interest at a variable rate. (2)Repaid in full on January 14, 2025 using cash on hand and borrowings under the 2021 Multicurrency Credit Facility (as defined below). (3)Repaid in full on March 14, 2025 using proceeds from the issuance of the 4.900% Notes and 5.350% Notes (each as defined below). (4)Repaid in full on April 3, 2025 using borrowings under the 2021 Multicurrency Credit Facility and cash on hand. (5)Notes are denominated in EUR. (6)Maturity date reflects the anticipated repayment date; final legal maturity is June 15, 2050. (7)Maturity date reflects the anticipated repayment date; final legal maturity is March 15, 2048. (8)Maturity date reflects the anticipated repayment date; final legal maturity is March 15, 2053. (9)As of March 31, 2025, includes the Bangladesh Term Loan (as defined below). The key terms of the Notes are as follows:
Senior Notes |  | Aggregate Principal Amount (in millions) |  | Issue Date and Interest Accrual Date |  | Maturity Date |  | Contractual Interest Rate |  | First Interest Payment |  | Interest Payments Due (1) |  | Par Call Date (2)
4.900% Notes |  | $ | 650.0 |  |  | March 14, 2025 |  | March 15, 2030 |  | 4.900% |  | September 15, 2025 |  | March 15 and September 15 |  | February 15, 2030
5.350% Notes |  | $ | 350.0 |  |  | March 14, 2025 |  | March 15, 2035 |  | 5.350% |  | September 15, 2025 |  | March 15 and September 15 |  | December 15, 2034
___________ (1)Accrued and unpaid interest on U.S. Dollar (“USD”) denominated notes is payable in USD semi-annually in arrears and will be computed from the issue date on the basis of a 360-day year comprised of twelve 30-day months. (2)The Company may redeem the Notes at any time, in whole or in part, at a redemption price equal to 100% of the principal amount of the Notes plus a make-whole premium, together with accrued interest to the redemption date. If the Company redeems the Notes on or after the par call date, the Company will not be required to pay a make-whole premium. As of March 31, 2025, the key terms under the 2021 Multicurrency Credit Facility, the 2021 Credit Facility and the 2021 Term Loan were as follows:
| Outstanding Principal Balance (in millions) |  | Undrawn letters of credit (in millions) |  | Maturity Date |  | Current margin over SOFR or EURIBOR (1) |  | Current commitment fee (2)
2021 Multicurrency Credit Facility | $ | 50.0 |  |  | $ | 5.2 |  |  | January 28, 2028 | (3) | 1.000 | % |  | 0.110 | %
2021 Credit Facility | 360.0 |  |  | 30.3 |  |  | January 28, 2030 | (3) | 1.000 | % |  | 0.110 | %
2021 Term Loan | 1,000.0 |  |  | N/A |  | January 28, 2028 |  | 1.000 | % |  | N/A
_______________ (1)Secured Overnight Financing Rate (“SOFR”) applies to the USD denominated borrowings under the 2021 Multicurrency Credit Facility, the 2021 Credit Facility and the 2021 Term Loan. Euro Interbank Offer Rate (“EURIBOR”) applies for EURIBOR based borrowings. (2)Fee on undrawn portion of each credit facility. (3)Subject to two optional renewal periods.

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