Income Taxes - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Additional Information [Line Items]
Pre-tax earnings from foreign operations	$ 462	$ 677	$ 293
Other comprehensive income (loss), provision (benefit)	3,184	985	(702)
Increase in valuation allowance	91
Valuation allowance	446	355
Accrued interest and penalties expense (benefit) related to income taxes included in income tax expense	(1)	(30)	$ 16
Unremitted earnings	1,700
Amount of unrecognized deferred tax liability, bad debt reserve for tax purposes of qualified lender	69
Bad debt reserve for tax purposes of qualified lender	287
Foreign Tax Credit Carryforward
Additional Information [Line Items]
Increase in valuation allowance	75
Net Operating State Losses And Interest Carryforwards
Additional Information [Line Items]
Increase in valuation allowance	15
Internal Revenue Service (IRS)
Additional Information [Line Items]
Operating loss carryforwards	13	25
Operating loss carryforwards, no expiration	13
State and Local Jurisdiction
Additional Information [Line Items]
Operating loss carryforwards	267	258
Foreign Tax Authority
Additional Information [Line Items]
Operating loss carryforwards	$ 166	$ 91