LONG-TERM OBLIGATIONS - Long-Term Debt Obligations (Details) - USD ($)
$ in Millions |
Jun. 30, 2025 |
May 30, 2025 |
Apr. 03, 2025 |
Mar. 14, 2025 |
Jan. 14, 2025 |
Dec. 31, 2024 |
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Finance lease obligations |
$ 16.9
|
|
|
|
|
$ 16.6
|
| Total |
37,484.5
|
|
|
|
|
36,501.8
|
| Less current portion of long-term obligations |
(2,290.8)
|
|
|
|
|
(3,693.0)
|
| Long-term obligations |
35,193.7
|
|
|
|
|
32,808.8
|
| American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Long-term debt |
35,673.9
|
|
|
|
|
34,174.9
|
| American Tower subsidiary |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Long-term debt |
1,793.7
|
|
|
|
|
2,310.3
|
| 2021 Term Loan | Unsecured debt | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Long-term debt |
997.7
|
|
|
|
|
$ 997.9
|
| 2.950% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
|
|
|
|
2.95%
|
2.95%
|
| Long-term debt |
0.0
|
|
|
|
|
$ 650.0
|
| 2.400% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
|
|
|
2.40%
|
|
2.40%
|
| Long-term debt |
0.0
|
|
|
|
|
$ 749.7
|
| 1.375% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
|
|
1.375%
|
|
|
1.375%
|
| Long-term debt |
0.0
|
|
|
|
|
$ 517.3
|
| 4.000% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
|
4.00%
|
|
|
|
4.00%
|
| Long-term debt |
$ 0.0
|
|
|
|
|
$ 749.4
|
| 1.300% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
1.30%
|
|
|
|
|
|
| Long-term debt |
$ 499.8
|
|
|
|
|
499.3
|
| 4.400% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
4.40%
|
|
|
|
|
|
| Long-term debt |
$ 499.6
|
|
|
|
|
499.3
|
| 1.600% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
1.60%
|
|
|
|
|
|
| Long-term debt |
$ 699.1
|
|
|
|
|
698.5
|
| 1.950% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
1.95%
|
|
|
|
|
|
| Long-term debt |
$ 588.4
|
|
|
|
|
516.4
|
| 1.450% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
1.45%
|
|
|
|
|
|
| Long-term debt |
$ 598.2
|
|
|
|
|
597.4
|
| 3.375% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
3.375%
|
|
|
|
|
|
| Long-term debt |
$ 997.5
|
|
|
|
|
996.6
|
| 3.125% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
3.125%
|
|
|
|
|
|
| Long-term debt |
$ 399.4
|
|
|
|
|
399.3
|
| 2.750% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
2.75%
|
|
|
|
|
|
| Long-term debt |
$ 748.5
|
|
|
|
|
748.0
|
| 0.450% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
0.45%
|
|
|
|
|
|
| Long-term debt |
$ 882.2
|
|
|
|
|
774.1
|
| 0.400% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
0.40%
|
|
|
|
|
|
| Long-term debt |
$ 587.4
|
|
|
|
|
515.0
|
| 3.650% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
3.65%
|
|
|
|
|
|
| Long-term debt |
$ 647.2
|
|
|
|
|
646.4
|
| 4.125% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
4.125%
|
|
|
|
|
|
| Long-term debt |
$ 705.1
|
|
|
|
|
618.5
|
| 3.55% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
3.55%
|
|
|
|
|
|
| Long-term debt |
$ 748.3
|
|
|
|
|
747.9
|
| 3.600% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
3.60%
|
|
|
|
|
|
| Long-term debt |
$ 697.4
|
|
|
|
|
697.0
|
| 0.500% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
0.50%
|
|
|
|
|
|
| Long-term debt |
$ 880.8
|
|
|
|
|
772.6
|
| 1.500% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
1.50%
|
|
|
|
|
|
| Long-term debt |
$ 648.2
|
|
|
|
|
647.8
|
| 5.500% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
5.50%
|
|
|
|
|
|
| Long-term debt |
$ 695.7
|
|
|
|
|
695.0
|
| 5.250% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
5.25%
|
|
|
|
|
|
| Long-term debt |
$ 645.8
|
|
|
|
|
645.2
|
| 5.800% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
5.80%
|
|
|
|
|
|
| Long-term debt |
$ 745.2
|
|
|
|
|
744.6
|
| 5.200% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
5.20%
|
|
|
|
|
|
| Long-term debt |
$ 644.4
|
|
|
|
|
643.7
|
| 3.950% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
3.95%
|
|
|
|
|
|
| Long-term debt |
$ 595.4
|
|
|
|
|
594.8
|
| 0.875% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
0.875%
|
|
|
|
|
|
| Long-term debt |
$ 880.9
|
|
|
|
|
773.0
|
| 3.800% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
3.80%
|
|
|
|
|
|
| Long-term debt |
$ 1,641.4
|
|
|
|
|
1,640.5
|
| 2.900% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
2.90%
|
|
|
|
|
|
| Long-term debt |
$ 745.6
|
|
|
|
|
745.1
|
| 5.000% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
5.00%
|
|
|
|
|
|
| Long-term debt |
$ 593.8
|
|
|
|
|
593.2
|
| 4.900% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
4.90%
|
|
|
4.90%
|
|
|
| Long-term debt |
$ 644.2
|
|
|
|
|
0.0
|
| 3.900% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
3.90%
|
|
|
|
|
|
| Long-term debt |
$ 585.0
|
|
|
|
|
512.9
|
| 2.100% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
2.10%
|
|
|
|
|
|
| Long-term debt |
$ 744.6
|
|
|
|
|
744.1
|
| 0.950% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
0.95%
|
|
|
|
|
|
| Long-term debt |
$ 584.6
|
|
|
|
|
512.6
|
| 1.875% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
1.875%
|
|
|
|
|
|
| Long-term debt |
$ 794.7
|
|
|
|
|
794.3
|
| 2.700% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
2.70%
|
|
|
|
|
|
| Long-term debt |
$ 696.0
|
|
|
|
|
695.6
|
| 4.625% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
4.625%
|
|
|
|
|
|
| Long-term debt |
$ 583.8
|
|
|
|
|
511.7
|
| 2.300% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
2.30%
|
|
|
|
|
|
| Long-term debt |
$ 694.0
|
|
|
|
|
693.6
|
| 1.000% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
1.00%
|
|
|
|
|
|
| Long-term debt |
$ 761.2
|
|
|
|
|
667.6
|
| 4.050% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
4.05%
|
|
|
|
|
|
| Long-term debt |
$ 644.0
|
|
|
|
|
643.7
|
| 3.625% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
3.625%
|
3.625%
|
|
|
|
|
| Long-term debt |
$ 585.7
|
|
|
|
|
0.0
|
| 5.650% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
5.65%
|
|
|
|
|
|
| Long-term debt |
$ 791.9
|
|
|
|
|
791.4
|
| 1.250% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
1.25%
|
|
|
|
|
|
| Long-term debt |
$ 584.1
|
|
|
|
|
512.1
|
| 5.550% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
5.55%
|
|
|
|
|
|
| Long-term debt |
$ 841.8
|
|
|
|
|
841.4
|
| 5.900% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
5.90%
|
|
|
|
|
|
| Long-term debt |
$ 742.5
|
|
|
|
|
742.2
|
| 5.450% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
5.45%
|
|
|
|
|
|
| Long-term debt |
$ 641.0
|
|
|
|
|
640.6
|
| 4.100% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
4.10%
|
|
|
|
|
|
| Long-term debt |
$ 582.5
|
|
|
|
|
510.5
|
| 5.400% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
5.40%
|
|
|
|
|
|
| Long-term debt |
$ 592.2
|
|
|
|
|
591.9
|
| 5.350% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
5.35%
|
|
|
5.35%
|
|
|
| Long-term debt |
$ 346.2
|
|
|
|
|
0.0
|
| 3.700% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
3.70%
|
|
|
|
|
|
| Long-term debt |
$ 592.7
|
|
|
|
|
592.6
|
| 3.100% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
3.10%
|
|
|
|
|
|
| Long-term debt |
$ 1,039.0
|
|
|
|
|
1,038.8
|
| 2.950% senior notes | Senior notes | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt interest rate (as a percent) |
2.95%
|
|
|
|
|
|
| Long-term debt |
$ 1,024.2
|
|
|
|
|
1,023.8
|
| Series 2015-2 notes | Secured debt | American Tower subsidiary |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Long-term debt |
0.0
|
|
|
|
|
524.7
|
| Series 2018-1A securities | Secured debt | American Tower subsidiary |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Long-term debt |
497.9
|
|
|
|
|
497.6
|
| Series 2023-1A Securities | Secured debt | American Tower subsidiary |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Long-term debt |
1,289.8
|
|
|
|
|
1,288.0
|
| Other subsidiary debt | Unsecured debt | American Tower subsidiary |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Long-term debt |
6.0
|
|
|
|
|
0.0
|
| Revolving Credit Facility | 2021 Multicurrency Credit Facility | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Long-term debt |
750.0
|
|
|
|
|
0.0
|
| Revolving Credit Facility | 2021 Credit Facility | American Tower Corporation |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Long-term debt |
$ 815.0
|
|
|
|
|
$ 0.0
|