Stockholders' Equity - Components of Accumulated Other Comprehensive Loss (Details) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2026 USD ($) country plan	Mar. 31, 2026 USD ($)	Jun. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Jun. 30, 2026 USD ($) country plan	Jun. 30, 2025 USD ($)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 14,295	$ 14,153	$ 13,888	$ 13,527	$ 14,153	$ 13,527
Net Change	(33)	16	160	176	(17)	336
Ending balance	$ 14,373	14,295	$ 14,082	$ 13,888	$ 14,373	$ 14,082
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					(17)
Ending balance	$ (1,376)				(1,376)
Foreign CTA gain (loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(1,607)			(1,607)
Net Change					(16)
Ending balance	(1,623)				(1,623)
Net investment hedge CTA gain (loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		257			257
Net Change					2
Ending balance	259				259
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					(3)
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