Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Earnings Per Share [Abstract]
Net income	$ 1,343	$ 2,294
Net income attributable to noncontrolling interests	12	151
Net income (loss)	$ 1,331	$ 2,143
Weighted-average shares outstanding	400,681,956	405,662,694
Share-based compensation plans	3,992,395	4,076,941
Weighted-average shares outstanding and assumed conversions	404,674,351	409,739,635
Basic earnings (loss) per share (US$ per share)	$ 3.32	$ 5.28
Diluted earnings (loss) per share (US$ per share)	$ 3.29	$ 5.23
Potential anti-dilutive share conversions	1,268,531	1,005,420