Stockholders' Equity (Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ (343)	$ (700)
Other comprehensive income (loss) before reclassifications	(40)	(9)
Amounts reclassified from accumulated other comprehensive income (loss)	(4)	(1)
Net current-period other comprehensive income (loss)	(44)	(10)
Ending balance	(508)	(441)
Amounts reclassified from accumulated other comprehensive income (loss)	4	1
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	108
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(96)	(101)
Ending balance	(140)	(111)
Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(3)	(30)
Other comprehensive income (loss) before reclassifications	(52)	(4)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Net current-period other comprehensive income (loss)	(52)	(4)
Ending balance	(55)	(34)
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	37	45
Other comprehensive income (loss) before reclassifications	12	(5)
Amounts reclassified from accumulated other comprehensive income (loss)	(5)	(2)
Net current-period other comprehensive income (loss)	7	(7)
Ending balance	44	38
Amounts reclassified from accumulated other comprehensive income (loss)	5	2
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)	(5)	(2)
Amounts reclassified from accumulated other comprehensive income (loss)	7	3
Amounts reclassified from accumulated other comprehensive income (loss)	5	2
Minimum Pension Liability Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(130)	(116)
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive income (loss)	1	1
Net current-period other comprehensive income (loss)	1	1
Ending balance	(129)	(115)
Amounts reclassified from accumulated other comprehensive income (loss)	(1)	$ (1)
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
Amounts reclassified from accumulated other comprehensive income (loss)	(1)
Amounts reclassified from accumulated other comprehensive income (loss)	$ (1)