Stockholders' Equity (Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ (125)	$ (649)	$ (700)	$ (209)
Other comprehensive income (loss) before reclassifications			(24)	(63)
Amounts reclassified from accumulated other comprehensive income (loss)			(5)	11
Net current-period other comprehensive income (loss)	(40)	(55)	(29)	(52)
Ending balance	(28)	(507)	(28)	(507)
Amounts reclassified from accumulated other comprehensive income (loss)			(5)	11
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	123		123
Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(30)	16
Other comprehensive income (loss) before reclassifications			(41)	(121)
Amounts reclassified from accumulated other comprehensive income (loss)			0	0
Net current-period other comprehensive income (loss)			(41)	(121)
Ending balance	(71)	(105)	(71)	(105)
Amounts reclassified from accumulated other comprehensive income (loss)			0	0
Net Unrealized Gains (Losses) on Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			45	(19)
Other comprehensive income (loss) before reclassifications			17	57
Amounts reclassified from accumulated other comprehensive income (loss)			(8)	8
Net current-period other comprehensive income (loss)			9	65
Ending balance	54	46	54	46
Amounts reclassified from accumulated other comprehensive income (loss)			(8)	8
Net Unrealized Gains (Losses) on Cash Flow Hedges | Corporate Interest Expense
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Amounts reclassified from accumulated other comprehensive income (loss)	(2)	1	(8)	8
Amounts reclassified from accumulated other comprehensive income (loss)	(2)	1	(10)	10
Amounts reclassified from accumulated other comprehensive income (loss)	(2)	1	(8)	8
Minimum Pension Liability Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(116)	(130)
Other comprehensive income (loss) before reclassifications			0	1
Amounts reclassified from accumulated other comprehensive income (loss)			3	3
Net current-period other comprehensive income (loss)			3	4
Ending balance	(113)	(126)	(113)	(126)
Amounts reclassified from accumulated other comprehensive income (loss)			3	3
Minimum Pension Liability Adjustment | Selling, General and Administrative Expenses
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Amounts reclassified from accumulated other comprehensive income (loss)	1	1	3	3
Amounts reclassified from accumulated other comprehensive income (loss)	1	1	4	4
Amounts reclassified from accumulated other comprehensive income (loss)	1	1	3	3
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(101)	(133)
Ending balance	$ (130)	$ (185)	$ (130)	$ (185)