Stockholders' Equity - Components of Accumulated Other Comprehensive Loss (Details) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2026 USD ($) country plan	Jun. 30, 2026 USD ($)	Mar. 31, 2026 USD ($)	Sep. 30, 2025 USD ($)	Jun. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Sep. 30, 2026 USD ($) country plan	Sep. 30, 2025 USD ($)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 14,373	$ 14,295	$ 14,153	$ 14,082	$ 13,888	$ 13,527	$ 14,153	$ 13,527
Net Change	(11)	(33)	16	(20)	160	176	(28)	316
Ending balance	$ 14,528	$ 14,373	14,295	$ 14,155	$ 14,082	$ 13,888	$ 14,528	$ 14,155
Number of defined benefit pension plans \| plan	2						2
Number of countries with a defined benefit pension plan \| country	2						2
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance			(1,359)				$ (1,359)
Net Change							(28)
Ending balance	$ (1,387)						(1,387)
Foreign CTA gain (loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance			(1,607)				(1,607)
Net Change							(58)
Ending balance	(1,665)						(1,665)
Net investment hedge CTA gain (loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance			257				257
Net Change							11
Ending balance	268						268
Unrealized gain (loss) on cash flow hedges
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance			(8)				(8)
Net Change							19
Ending balance	11						11
Net actuarial gain (loss) on defined benefit plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance			(1)				(1)
Net Change							0
Ending balance	(1)						(1)
Accumulated other comprehensive (income) loss attributable to non-controlling interests
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance			$ 0				0
Net Change							2
Ending balance	$ 2						$ 2