Equity and Share-Based Compensation - Schedule of Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	Sep. 30, 2025	Jun. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), net of deferred taxes	$ 97,416		$ 86,038	$ 86,318
Cumulative translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), net of deferred taxes	(364)		(2,474)
Deferred gains (losses) on cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), net of deferred taxes	45		106
Unrecognized gains (losses) on employee benefit obligations and other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), net of deferred taxes	228		325
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), net of deferred taxes	$ (90)	$ 525	$ (2,043)	$ (8)	$ (1,822)	$ (1,253)