Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Net income	$ 2,294	$ 1,892
Net income attributable to noncontrolling interests	151	0
Net income (loss)	$ 2,143	$ 1,892
Weighted-average shares outstanding	405,662,694	414,289,150
Share-based compensation plans	4,076,941	3,639,042
Weighted-average shares outstanding and assumed conversions	409,739,635	417,928,192
Basic earnings (loss) per share (US$ per share)	$ 5.28	$ 4.57
Diluted earnings (loss) per share (US$ per share)	$ 5.23	$ 4.53
Potential anti-dilutive share conversions	1,005,420	1,731,523