Loans and Allowance for Credit Losses - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) loan loanSegment	Dec. 31, 2021 USD ($) loan	Dec. 31, 2020 USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
Number of loans and leases segments | loanSegment	2
Financing receivable, excluding accrued interest, after allowance for credit loss	$ 32,053	$ 32,445
Number of loans on non-accrual status | loan	0	0
Sale of loans	$ 1,786	$ 172	$ 324
Loans remained unsettled	5
Provision for credit losses	$ 20	$ (33)	$ 88
Loans modified in troubled debt restructurings | loan	0	0
Loans no longer meeting similar risk of collective pool | loan	6
Loans no longer meeting similar risk of collective pool, amount	$ 99
Investment grade loans	85.00%
Speculative grade loans	14.00%
Speculative senior secured loans with BB or B rating	96.00%
Asset Pledged as Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, excluding accrued interest, after allowance for credit loss	$ 10,170	$ 10,800
Leveraged Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Sale of loans	1,800
Provision for credit losses	(6)
Commercial and Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Allowance for credit loss	5
Collateralized loan obligations
Financing Receivable, Credit Quality Indicator [Line Items]
Payments to acquire loans receivable	$ 1,980