Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Net income	$ 5,313	$ 8,539	$ 3,533
Weighted-average shares outstanding	419,779,847	439,968,422	451,602,820
Share-based compensation plans	3,747,597	3,228,856	1,838,692
Adjusted weighted-average shares outstanding and assumed conversions	423,527,444	443,197,278	453,441,512
Basic earnings per share	$ 12.66	$ 19.41	$ 7.82
Diluted earnings per share	$ 12.55	$ 19.27	$ 7.79
Potential anti-dilutive share conversions	1,467,840	1,532,066	6,811,966