Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Earnings Per Share [Abstract]
Net income	$ 2,490	$ 2,040	$ 7,000	$ 5,725
Net income (loss) attributable to noncontrolling interests	166	(3)	303	(3)
Net income (loss)	$ 2,324	$ 2,043	$ 6,697	$ 5,728
Weighted-average shares outstanding	403,831,412	409,505,454	404,700,118	412,076,470
Share-based compensation plans	4,047,315	3,100,505	4,191,655	3,288,940
Weighted-average shares outstanding and assumed conversions	407,878,727	412,605,959	408,891,773	415,365,410
Basic earnings (loss) per share (US$ per share)	$ 5.75	$ 4.99	$ 16.55	$ 13.90
Diluted earnings (loss) per share (US$ per share)	$ 5.70	$ 4.95	$ 16.38	$ 13.79
Potential anti-dilutive share conversions	1,330,590	2,562,206	1,080,371	2,330,821