Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income		$ 1,570	$ 661	$ 754
Other comprehensive income (loss), net of tax
Unrealized (loss) gain on hedges, net of income tax (benefit) expense of $(5), $(2) and $11		(7)	(1)	17
Defined benefit plans after reclassification adjustment, net of income tax expense (benefit) of $0, $9 and $(3)		0	21	(7)
Foreign currency translation adjustment before reclassification adjustment, net of income tax (benefit) expense of $(1), $33 and $17		(291)	253	(144)
Reclassification adjustment	[1]	0	197	0
Other comprehensive income (loss), net of tax		(298)	470	(134)
Comprehensive income		$ 1,272	$ 1,131	$ 620

[1] The reclassification adjustment in 2017 is related to the sale of the European Operations.