Stockholders' Equity (Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ (441)	$ (983)	$ (700)	$ (209)
Other comprehensive income (loss) before reclassifications			15	(6)
Amounts reclassified from accumulated other comprehensive income			(4)	9
Net current-period other comprehensive income (loss)	21	(36)	11	3
Ending balance	(125)	(649)	(125)	(649)
Amounts reclassified from accumulated other comprehensive income			(4)	9
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	100		100
Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(30)	16
Other comprehensive income (loss) before reclassifications			2	(43)
Amounts reclassified from accumulated other comprehensive income			0	0
Net current-period other comprehensive income (loss)			2	(43)
Ending balance	(28)	(27)	(28)	(27)
Amounts reclassified from accumulated other comprehensive income			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			13	36
Amounts reclassified from accumulated other comprehensive income			(6)	7
Net current-period other comprehensive income (loss)			7	43
Ending balance	52	24	52	24
Amounts reclassified from accumulated other comprehensive income			(6)	7
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	4	3	6	7
Amounts reclassified from accumulated other comprehensive income (loss)	5	4	8	9
Amounts reclassified from accumulated other comprehensive income	4	3	6	7
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			2	2
Net current-period other comprehensive income (loss)			2	3
Ending balance	(114)	(127)	(114)	(127)
Amounts reclassified from accumulated other comprehensive income			2	2
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	1		2	2
Amounts reclassified from accumulated other comprehensive income (loss)	2		3	3
Amounts reclassified from accumulated other comprehensive income	1		2	2
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(101)	(133)
Ending balance	$ (90)	$ (130)	$ (90)	$ (130)