Common Stock Repurchase Program - Repurchases (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended		3 Months Ended		9 Months Ended
	Apr. 30, 2024	Feb. 29, 2024	Sep. 30, 2024	Jun. 30, 2024	Sep. 30, 2024	Sep. 30, 2023
Capital Stock, Dividends and Common Stock Repurchase Program
Cash paid for repurchase of common stock					$ 262	$ 990
Authorized share repurchases			$ 1,238		$ 1,238
Accelerated Share Repurchase Agreement (ASR) [Member]
Capital Stock, Dividends and Common Stock Repurchase Program
Shares repurchased (in shares)	0.2	1.0
Weighted average price per share (in dollars per share)		$ 199.16
Cash paid for repurchase of common stock		$ 250
Weighted average final purchase price (in dollars per share)	$ 206.23
10b5-1 Plan [Member]
Capital Stock, Dividends and Common Stock Repurchase Program
Shares repurchased (in shares)			0.0	0.1
Cash paid for repurchase of common stock				$ 12
Weighted average final purchase price (in dollars per share)				$ 209.20
October 2023 Accelerated Share Repurchase Agreement [Member]
Capital Stock, Dividends and Common Stock Repurchase Program
Shares repurchased (in shares)		0.2
Weighted average final purchase price (in dollars per share)		$ 175.29