Shareholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Nov. 01, 2017	Oct. 31, 2017	Aug. 31, 2015	Dec. 31, 2012
Equity [Abstract]
Dividends declared per share (in dollars per share)	$ 3.12	$ 3.04	$ 2.96
Dividends payable	$ 201	$ 82	$ 80
Dividend per share declared (in dollars per share)	$ 0.79	$ 0.77	$ 0.75
Shares authorized under repurchase program							$ 250
Additional authorized amount				$ 250		$ 250
Remaining authorized amended repurchase amount					$ 56
Remaining authorized repurchase amount	$ 280			$ 300
Remaining number of shares authorized to be repurchase	1,856,397
Stock repurchased during period as percentage of shares outstanding	0.80%