Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal	$ 213	$ 179	$ 168
State and Local	68	59	50
Non-U.S.	215	181	233
Total current	496	419	451
Deferred:
Federal	6	(19)	(59)
State and Local	0	(3)	(2)
Non-U.S.	(50)	(16)	(38)
Total deferred	(44)	(38)	(99)
Total provision for income taxes	$ 452	$ 381	$ 352