Capital Stock, Dividends and Common Stock Repurchase Program - Repurchases (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	1 Months Ended			12 Months Ended
	Feb. 29, 2024	Oct. 31, 2023	Jan. 31, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Capital Stock, Dividends and Common Stock Repurchase Program
Cash paid for repurchase of common stock				$ 262	$ 1,302	$ 1,500
Shares repurchased (in shares)				1,494	7,840	9,796
Weighted average price per share (in dollars per share)				$ 196.95	$ 158.47	$ 160.26
Total repurchases (in dollars)				$ 262	$ 1,242	$ 1,570
Accelerated Share Repurchase Agreement (ASR) [Member]
Capital Stock, Dividends and Common Stock Repurchase Program
Cash paid for repurchase of common stock		$ 300	$ 70	$ 250	$ 950	$ 1,417
Shares repurchased (in shares)	200	1,500	400	1,200	6,000	8,800
Weighted average price per share (in dollars per share)		$ 161.38
Weighted average final purchase price (in dollars per share)	$ 175.29
10b5-1 Plan [Member]
Capital Stock, Dividends and Common Stock Repurchase Program
Cash paid for repurchase of common stock				$ 12	$ 52	$ 83
Shares repurchased (in shares)				100	300	600