Variable Interest Entities (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Assets	$ 109,310	$ 58,309
Liabilities	99,477	53,571
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Assets	718	169
Liabilities	264	43
Maximum loss exposure	718	169
Variable Interest Entity, Not Primary Beneficiary | Tax credit equity investments
Variable Interest Entity [Line Items]
Assets	563	157
Variable Interest Entity, Not Primary Beneficiary | Equity investments
Variable Interest Entity [Line Items]
Assets	155	12
Variable Interest Entity, Not Primary Beneficiary | Commitments to tax credit investments
Variable Interest Entity [Line Items]
Liabilities	$ 264	$ 43