Stockholders' Equity (Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ (2,317)	$ (343)
Other comprehensive income (loss) before reclassifications	11	(40)
Gross (gains) losses reclassified	(4)	(6)
Tax on (gains) losses reclassified	1	2
(Gains) losses reclassified from accumulated other comprehensive income (loss), net of tax	(3)	(4)
Net current-period other comprehensive income (loss)	8	(44)
Ending balance	(2,811)	(508)
Foreign Exchange Contracts | Derivatives designated as hedging instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Derivatives used in net investment hedge, net of tax	107
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(210)	(96)
Ending balance	(202)	(140)
Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(125)	(3)
Other comprehensive income (loss) before reclassifications	13	(52)
(Gains) losses reclassified from accumulated other comprehensive income (loss), net of tax	0	0
Net current-period other comprehensive income (loss)	13	(52)
Ending balance	(112)	(55)
Net Unrealized Gains (Losses) on Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	31	37
Other comprehensive income (loss) before reclassifications	(2)	12
Gross (gains) losses reclassified	(5)	(7)
Tax on (gains) losses reclassified	1	2
(Gains) losses reclassified from accumulated other comprehensive income (loss), net of tax	(4)	(5)
Net current-period other comprehensive income (loss)	(6)	7
Ending balance	25	44
Minimum Pension Liability Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(116)	(130)
Other comprehensive income (loss) before reclassifications	0	0
Gross (gains) losses reclassified	1	1
Tax on (gains) losses reclassified	0	0
(Gains) losses reclassified from accumulated other comprehensive income (loss), net of tax	1	1
Net current-period other comprehensive income (loss)	1	1
Ending balance	$ (115)	$ (129)