Securitizations and Variable Interest Entities (Schedule of Quantitative Information and Net Credit Losses about Securitized and Other Financial Assets Managed Together) (Details) - Consumer Other Portfolio Sector - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Derecognized Assets, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Total amount	$ 4	$ 0
Amount 60 days or more past due	0	0
Whole-loan sales
Derecognized Assets, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Total amount	4	0
Amount 60 days or more past due	$ 0	$ 0