Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share [Abstract]
Net income	$ 2,216	$ 1,793	$ 4,510	$ 3,685
Net income (loss) attributable to noncontrolling interests	(14)	0	137	0
Net income (loss)	$ 2,230	$ 1,793	$ 4,373	$ 3,685
Weighted-average shares outstanding	404,615,765	412,487,400	405,139,228	413,383,304
Share-based compensation plans	3,990,902	3,084,476	4,138,555	3,387,233
Weighted-average shares outstanding and assumed conversions	408,606,667	415,571,876	409,277,783	416,770,537
Basic earnings (loss) per share (US$ per share)	$ 5.51	$ 4.35	$ 10.79	$ 8.92
Diluted earnings (loss) per share (US$ per share)	$ 5.46	$ 4.32	$ 10.68	$ 8.84
Potential anti-dilutive share conversions	1,348,531	3,143,311	939,842	2,190,304