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	0	0	1	0
Comprehensive income (loss) attributable to common unitholders	$ 269	$ 301	$ 262	$ 957