Additional Financial Information - Schedule of Supplemental Consolidated Statements of Cash Flows Information (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Supplemental Financial Statement Elements [Abstract] | ||||
| Interest payments, net of amounts capitalized | $ 946 | $ 997 | $ 3,119 | $ 2,923 |
| Operating lease payments | 1,302 | 1,269 | 4,142 | 3,685 |
| Income tax payments, net of refunds received | 7 | 63 | 774 | 415 |
| Non-cash investing and financing activities | ||||
| Change in accounts payable and accrued liabilities for purchases of property and equipment | 51 | 136 | (710) | (458) |
| Operating lease right-of-use assets obtained in exchange for lease obligations | 582 | 1,064 | 1,647 | 2,138 |
| Financing lease right-of-use assets obtained in exchange for lease obligations | 340 | 324 | 1,050 | 1,002 |
| Debt assumed in the UScellular Acquisition | $ 0 | $ 1,653 | $ 0 | $ 1,653 |
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- Definition Change In Capital Expenditures Incurred But Not Yet Paid No definition available.
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- Definition Supplemental Financial Statement Elements [Abstract] No definition available.
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- References No definition available.
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- Definition Amount, after refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase in right-of-use asset obtained in exchange for finance lease liability. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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