Capital Stock, Dividends and Common Stock Repurchase Program - Repurchases (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	1 Months Ended		11 Months Ended	12 Months Ended
	Jan. 31, 2022	Dec. 31, 2021	Nov. 30, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accelerated Share Repurchases [Line Items]
Authorized share repurchases		$ 1,500		$ 1,500
Cash paid for repurchase of common stock				$ 1,350	$ 402	$ 248
Shares repurchased (in shares)				8,731	3,687	2,247
Weighted average purchase price (in dollars per share)				$ 146.61	$ 108.92	$ 108.60
Total repurchases		1,280		$ 1,280	$ 402	$ 244
Accelerated Share Repurchase Agreement (ASR) [Member]
Accelerated Share Repurchases [Line Items]
Cash paid for repurchase of common stock		$ 350	$ 1,000	$ 1,350	$ 313	$ 180
Shares repurchased (in shares)	400	1,700	7,000	8,700	2,800	1,600
Weighted average purchase price (in dollars per share)	$ 160.33			$ 146.61
Initial stock repurchase price (in dollars per share)		$ 160.67
10b5-1 Plan [Member]
Accelerated Share Repurchases [Line Items]
Cash paid for repurchase of common stock					$ 89	$ 64
Shares repurchased (in shares)					900	700