Income Taxes (Unrecognized Tax Benefits) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Undistributed Earnings of Foreign Subsidiaries	$ 4,300	$ 4,100
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	175	167	$ 166
Current year tax positions - additions	12	25	25
Prior year tax positions - additions	10	5	4
Prior year tax positions - reductions	(2)	(2)	(9)
Statute of limitations expirations	(19)	(8)	(6)
Settlements	(21)	(11)	(12)
Foreign currency translation	3	(1)	(1)
Ending balance	$ 158	$ 175	$ 167