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Debt and Other Obligations (Indebtedness) (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Debt Instrument [Line Items] |  |  |  |
Debt and Finance Lease Obligations |  | $ 24,319 |  | $ 24,054
Less: current maturities of debt and other obligations |  | 2,769 |  | 603
Non-current portion of long-term debt and other long-term obligations |  | 21,550 |  | 23,451
Finance Lease Obligations |  | 6 |  | 8
2018 Tower Revenue Notes 4.241% due 2048 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt and Finance Lease Obligations | [1] | $ 750 |  |
Fixed Rate Securitized Debt July 2018 Tower Revenue Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Increase (Decrease) |  | 5.00% |  |
Securitized Debt [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt and Finance Lease Obligations |  | $ 1,034 |  | 1,751
Securitized Debt [Member] | Fixed Rate Debt 2009 Securitized Notes A-2 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 9.00% |  |
Debt and Finance Lease Obligations |  | $ 27 |  | 32
Securitized Debt [Member] | 2015 Tower Revenue Notes 3.663% due 2045 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 3.70% |  |
Debt and Finance Lease Obligations |  | $ 0 | [4] | 700
Securitized Debt [Member] | 2018 Tower Revenue Notes 4.241% due 2048 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 4.241% |  |
Debt and Finance Lease Obligations | [1] | $ 747 |  | 747
Installment Purchase Liabilities and Finance Leases | Securitized Debt [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt and Finance Lease Obligations | [5],[6] | $ 260 |  | 272
Bank Debt [Member] | 2016 Term Loan A [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3],[7] | 5.20% |  |
Debt and Finance Lease Obligations | [7] | $ 1,072 |  | 1,117
High Yield Bonds [Member] | June 2020 Senior Unsecured 1.350% Notes [Domain] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 1.35% |  |
Debt and Finance Lease Obligations |  | $ 0 | [8] | 499
High Yield Bonds [Member] | Senior Unsecured 2016 Notes 4.450% [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 4.50% |  |
Debt and Finance Lease Obligations |  | $ 900 |  | 899
High Yield Bonds [Member] | Senior Unsecured 2016 Notes 3.7% [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 3.70% |  |
Debt and Finance Lease Obligations |  | $ 749 |  | 749
High Yield Bonds [Member] | February 2021 Senior Unsecured 1.050% Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 1.10% |  |
Debt and Finance Lease Obligations |  | $ 998 |  | 997
High Yield Bonds [Member] | 4.000% Senior Unsecured Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 4.00% |  |
Debt and Finance Lease Obligations |  | $ 499 |  | 498
High Yield Bonds [Member] | 2.900% Senior Unsecured Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 2.90% |  |
Debt and Finance Lease Obligations |  | $ 747 |  | 746
High Yield Bonds [Member] | August 2017 Senior Unsecured 3.650% Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 3.70% |  |
Debt and Finance Lease Obligations |  | $ 998 |  | 997
High Yield Bonds [Member] | January 2023 Senior Unsecured 5.000% Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 5.00% |  |
Debt and Finance Lease Obligations |  | $ 995 |  | 993
High Yield Bonds [Member] | 3.800% Senior Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 3.80% |  |
Debt and Finance Lease Obligations |  | $ 997 |  | 996
High Yield Bonds [Member] | 4.800% Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 4.80% |  |
Debt and Finance Lease Obligations |  | $ 596 |  | 595
High Yield Bonds [Member] | February 2019 Senior Unsecured 4.300% Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 4.30% |  |
Debt and Finance Lease Obligations |  | $ 597 |  | 596
High Yield Bonds [Member] | December 2023 Senior Unsecured 5.600% Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 5.60% |  |
Debt and Finance Lease Obligations |  | $ 744 |  | 742
High Yield Bonds [Member] | August 2024 Senior Unsecured 4.900% Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 4.90% |  |
Debt and Finance Lease Obligations |  | $ 545 |  | 544
High Yield Bonds [Member] | August 2019 Senior Unsecured 3.100% Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 3.10% |  |
Debt and Finance Lease Obligations |  | $ 547 |  | 547
High Yield Bonds [Member] | April 2020 Senior Unsecured 3.300% Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 3.30% |  |
Debt and Finance Lease Obligations |  | $ 743 |  | 742
High Yield Bonds [Member] | June 2020 Senior Unsecured 2.250% Notes [Domain] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 2.30% |  |
Debt and Finance Lease Obligations |  | $ 1,094 |  | 1,093
High Yield Bonds [Member] | February 2021 Senior Unsecured 2.100% Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 2.10% |  |
Debt and Finance Lease Obligations |  | $ 992 |  | 991
High Yield Bonds [Member] | June 2021 Senior Unsecured 2.500% Notes [Domain] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 2.50% |  |
Debt and Finance Lease Obligations |  | $ 744 |  | 744
High Yield Bonds [Member] | 5.100% Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 5.10% |  |
Debt and Finance Lease Obligations |  | $ 744 |  | 743
High Yield Bonds [Member] | December 2023 Senior Unsecured 5.800% Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 5.80% |  |
Debt and Finance Lease Obligations |  | $ 743 |  | 742
High Yield Bonds [Member] | August 2024 Senior Unsecured 5.200% Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 5.20% |  |
Debt and Finance Lease Obligations |  | $ 690 |  | 689
High Yield Bonds [Member] | February 2021 Senior Unsecured 2.900% Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 2.90% |  |
Debt and Finance Lease Obligations |  | $ 1,236 |  | 1,235
High Yield Bonds [Member] | 4.750% Senior Unsecured Notes [Member] [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 4.80% |  |
Debt and Finance Lease Obligations |  | $ 345 |  | 345
High Yield Bonds [Member] | February 2019 Senior Unsecured 5.200% Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 5.20% |  |
Debt and Finance Lease Obligations |  | $ 396 |  | 396
High Yield Bonds [Member] | August 2019 Senior Unsecured 4.000% Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 4.00% |  |
Debt and Finance Lease Obligations |  | $ 346 |  | 346
High Yield Bonds [Member] | April 2020 Senior Unsecured 4.150% Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 4.20% |  |
Debt and Finance Lease Obligations |  | $ 491 |  | 490
High Yield Bonds [Member] | June 2020 Senior Unsecured 3.250% Notes [Domain] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 3.30% |  |
Debt and Finance Lease Obligations |  | $ 891 |  | 891
Unsecured Debt [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt and Finance Lease Obligations |  | $ 23,285 |  | 22,303
Maximum [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 0.75% |  |
Maximum [Member] | Installment Purchase Liabilities and Finance Leases |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 8.00% |  |
Maximum [Member] | Installment purchases |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument Maturity Date Range |  | 20 years |  |
Minimum [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 0.00% |  |
Minimum [Member] | Installment purchases |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument Maturity Date Range |  | one year |  |
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Maximum [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 1.75% |  |
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Minimum [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 0.875% |  |
Revolving Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3],[7] | 5.50% |  |
Debt Instrument, Unused Borrowing Capacity, Amount |  | $ 6,100 |  |
Debt and Finance Lease Obligations | [7] | $ 900 | [9] | 0
Revolving Credit Facility [Member] | Maximum [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Line of Credit Facility, Commitment Fee Percentage |  | 0.30% |  |
Revolving Credit Facility [Member] | Minimum [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Line of Credit Facility, Commitment Fee Percentage |  | 0.08% |  |
Commercial Paper [Member] | Bank Debt [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2],[3] | 4.80% |  |
Debt and Finance Lease Obligations |  | $ 1,946 | [10] | $ 1,341
Debt Instrument, Maturity Date, Description |  | 397 days |  |
Commercial Paper [Member] | Maximum [Member] | Bank Debt [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Maturity Date, Description |  | three months |  |
Term SOFR Adjustment |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 0.10% |  |
[1] | If the $750 million aggregate principal amount of 4.241% senior secured tower revenue notes ("Tower Revenue Notes, Series 2018-2") is not paid in full on or prior to July 2028, the anticipated repayment date, then Excess Cash Flow (as defined in the indenture) of the issuers of such notes will be used to repay the principal, and additional interest (of an approximately 5% per annum) will accrue on such notes. The Tower Revenue Notes, Series 2018-2 are prepayable at par if voluntarily repaid within eighteen months of the anticipated repayment date; earlier prepayment may require additional consideration.
[2] | Represents the weighted-average stated interest rate, as applicable.
[3] | See the 2024 Form 10-K, including note 7 to the consolidated financial statements, for additional information regarding the maturity and principal amortization provisions and interest rates relating to the Company's indebtedness.
[4] | In May 2025, the Company paid in full the previously outstanding Tower Revenue Notes, Series 2015-2 on the anticipated repayment date.
[5] | For the periods ended September 30, 2025 and December 31, 2024, reflects $6 million and $8 million, respectively, in finance lease obligations (primarily related to vehicles).
[6] | The Company's installment purchases primarily relate to land and bear interest rates up to 8% and mature in periods ranging from less than one year to approximately 20 years.
[7] | Both the 2016 Revolver and the senior unsecured term loan A facility ("2016 Term Loan A" and, collectively, "2016 Credit Facility") bear interest, at the Company's option, at either (1) Term SOFR plus (i) a credit spread adjustment of 0.10% per annum and (ii) a credit spread ranging from 0.875% to 1.750% per annum or (2) an alternate base rate plus a credit spread ranging from 0.000% to 0.750% per annum, in each case, with the applicable credit spread based on the Company's senior unsecured debt rating. The Company pays a commitment fee ranging from 0.080% to 0.300%, based on the Company's senior unsecured debt rating, per annum on the undrawn available amount under the 2016 Revolver. See the 2024 Form 10-K, including note 7 to the consolidated financial statements, for information regarding potential adjustments to such percentages.
[8] | In July 2025, the Company repaid in full the 1.350% Senior Notes (as defined below) on the contractual maturity date.
[9] | As of September 30, 2025, the undrawn availability under the Company's senior unsecured revolving credit facility ("2016 Revolver") was $6.1 billion.
[10] | The maturities of the short-term, unsecured commercial paper notes ("Commercial Paper Notes"), when outstanding, may vary but may not exceed 397 days from the date of issue; however, there were no Commercial Paper Notes issued or outstanding during the period that had original maturities greater than three months. The Commercial Paper Notes are issued under customary terms in the commercial paper market and are issued at a discount from par or, alternatively, can be issued at par and bear varying interest rates on a fixed or floating basis. At any point in time, the Company intends to maintain available commitments under its 2016 Revolver in an amount at least equal to the amount of Commercial Paper Notes outstanding. While any outstanding Commercial Paper Notes generally have short-term maturities, the Company classifies the outstanding issuances, when applicable, as long-term based on its ability and intent to refinance the outstanding issuances on a long-term basis.

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