Additional Financial Information - Schedule of Supplemental Consolidated Statements of Cash Flows Information (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Supplemental Financial Statement Elements [Abstract]
Interest payments, net of amounts capitalized	$ 1,054	$ 934
Operating lease payments	1,537	1,214
Income tax payments, net of refunds received	10	10
Non-cash investing and financing activities
Change in accounts payable and accrued liabilities for purchases of property and equipment	(357)	(463)
Operating lease right-of-use assets obtained in exchange for lease obligations	525	481
Financing lease right-of-use assets obtained in exchange for lease obligations	$ 222	$ 248

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Supplemental Financial Statement Elements [Abstract]

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Amount, after refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax.

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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.

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