Equity (Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax, Beginning Balance	$ (1,644)	$ (1,721)
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax, Beginning Balance	(54)	(38)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	(2,397)	(2,229)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(70)	(321)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	258	264
Reclassification to earnings, net of income tax expense of $105, $17, and $12, respectively	(387)	(74)	$ (42)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(127)	140	(10)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	27	(13)	6
Other Comprehensive Income (Loss), Net of Tax	292	(167)	(227)
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax, Ending Balance	(1,734)	(1,644)	(1,721)
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax, Ending Balance	(30)	(54)	(38)
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax	(456)	(699)	(470)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	(2,220)	(2,397)	(2,229)
Available-for-Sale securities, net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(86)	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	3	192
Derivative gains (losses), net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(7)	(309)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	254	72
Unfunded pension obligations, net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	23	(12)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	1	0
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification to earnings, net of income tax expense of $105, $17, and $12, respectively	247	(237)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(83)	192	0
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	24	(12)	12
Other Comprehensive Income (Loss), Net of Tax	188	(57)	$ (154)
ASC 606 Impact [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax, Beginning Balance	(115)
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax, Ending Balance		(115)
ASC 606 Impact [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		(111)
ASC 606 Impact [Member] | Derivative gains (losses), net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		8
ASC 606 Impact [Member] | Unfunded pension obligations, net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax, Beginning Balance	(4)
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax, Ending Balance		$ (4)
Accounting Standards Update 2017-12 [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(11)
Accounting Standards Update 2017-12 [Member] | Available-for-Sale securities, net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(7)
Accounting Standards Update 2017-12 [Member] | Derivative gains (losses), net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(4)
Accounting Standards Update 2017-12 [Member] | Unfunded pension obligations, net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	$ 0