Securitizations and Variable Interest Entities - Schedule of Expected Losses (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Carrying Value	$ 401	$ 382
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Carrying Value	401	382
Total Exposure	401	382
Rated notes | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Carrying Value	300	282
Total Exposure	300	282
Certificates and other assets | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Carrying Value	101	100
Total Exposure	$ 101	$ 100