Shareholders' Equity - Summary of Amount of Common Stock Repurchased by the Firm (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Equity [Abstract]
Common share repurchases (in shares)	10.1	15.3	8.2
Average cost per share (in dollars per share)	$ 346.07	$ 339.81	$ 236.35
Total cost of common share repurchases	$ 3,500	$ 5,200	$ 1,928

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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