Common Stock Repurchase Program - Repurchases (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended		3 Months Ended	9 Months Ended
	Oct. 31, 2022	Jan. 31, 2022	Dec. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Common stock repurchase program
Authorized share repurchases				$ 437
Cash paid for repurchase of common stock				1,061	$ 1,000
Accelerated Share Repurchase Agreement (ASR) [Member]
Common stock repurchase program
Cash paid for repurchase of common stock			$ 350	$ 1,000
Shares repurchased (in shares)		0.4	1.7	6.3
Initial stock repurchase price (in dollars per share)			$ 160.67
Weighted average final purchase price (in dollars per share)		$ 160.33		$ 160.56
10b5-1 Plan [Member]
Common stock repurchase program
Cash paid for repurchase of common stock	$ 2			$ 63
Shares repurchased (in shares)				0.4
Weighted average final purchase price (in dollars per share)				$ 151.30