Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Tax	$ 0	$ 0	$ 0	$ 0
OCI, Foreign Currency Transaction and Translation Gain (Loss), Arising During Period, Tax	0	0	0	0
Change in derivative fair value, net of income tax benefit (expense) of $48, $33, $(19), and $166, respectively	48	33	(19)	166
Reclassification to earnings, net of income tax expense of $6, $25, $13, and $33, respectively	(6)	(25)	(13)	(33)
Change in pension adjustments due to net actuarial gain (loss) for the period, income tax (expense) benefit	(1)	0	0	0
Net income (loss)	(77)	3	(106)	232
Foreign currency translation adjustments, net of $0 income tax for all periods	38	17	(31)	(135)
Reclassification to earnings, net of $0 income tax for all periods	3	(2)	3	(2)
Total foreign currency translation adjustment, net of income tax	41	15	(28)	(137)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(175)	(99)	68	(547)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	26	78	49	110
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	(149)	(21)	117	(437)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax	(1)	0	0	0
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	1	0	1	0
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	0	0	1	0
Other Comprehensive Income (Loss), Net of Tax	(108)	(6)	90	(574)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	(185)	(3)	(16)	(342)
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	104	(81)	(47)	(60)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	(81)	(84)	(63)	(402)
Pension, Reclassifications to Earnings, Net of Income Tax (expense) benefit	$ (1)	$ (1)	$ (1)	$ (1)