Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - 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]
Foreign currency translation (loss) gain, tax	$ 13	$ (11)	$ 6	$ (17)
Unrealized (loss) gain on financial assets/liabilities designated as hedging instruments, tax effect	0	0	0	0
Defined benefit plans adjustment, tax	$ (1)	$ 0	$ 1	$ 0