Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 223	$ 351	$ 611	$ 854
Foreign currency translation adjustment	239	(173)	(170)	185
Net change in fair value of net investment hedges, net of tax of $40, $(37), $(12) and $2	(198)	143	39	27
Net change in fair value of cash flow hedges, net of tax of $7, $9, $99 and $43	(17)	(25)	(268)	(116)
Amounts reclassified to earnings of cash flow hedges, net of tax of $(8), $(2), $(18) and $(3)	22	5	51	7
Other comprehensive income (loss)	46	(50)	(348)	103
Comprehensive income (loss)	269	301	263	957
Comprehensive income (loss) attributable to noncontrolling interests	94	129	91	424
Comprehensive income (loss) attributable to common shareholders	$ 175	$ 172	$ 172	$ 533