Fair Value Option - Summary of DVA Gains/(Losses) on Financial Liabilities (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Option, Quantitative Disclosures [Line Items]
After tax DVA	$ 1,403	$ 322	$ (261)
Other Financial Liabilities
Fair Value, Option, Quantitative Disclosures [Line Items]
Pre-tax DVA	1,882	433	(347)
After tax DVA	$ 1,403	$ 322	$ (261)