Income Taxes (Components of Income Tax Expense) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current income tax expense
U.S. federal	$ 86	$ 7	$ 179
U.S. State and local	15	4	49
Non-U.S.	296	297	349
Total current income tax	397	308	577
Deferred income tax expense
U.S. federal	(1)	44	107
U.S. State and local	13	7	(16)
Non-U.S.	(17)	(6)	(53)
Deferred Income Tax Expense (Benefit)	(5)	45	38
Total	$ 392	$ 353	$ 615