Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share [Abstract]
Net income (loss)	$ 1,793	$ 1,190	$ 3,685	$ 3,143
Weighted-average shares outstanding	412,487,400	421,624,660	413,383,304	423,703,328
Share-based compensation plans	3,084,476	3,793,686	3,387,233	3,982,116
Weighted-average shares outstanding and assumed conversions	415,571,876	425,418,346	416,770,537	427,685,444
Basic earnings (loss) per share (US$ per share)	$ 4.35	$ 2.82	$ 8.92	$ 7.42
Diluted earnings (loss) per share (US$ per share)	$ 4.32	$ 2.80	$ 8.84	$ 7.35
Potential anti-dilutive share conversions	3,143,311	1,690,893	2,190,304	1,196,180