Long-Term Debt - Notes Associated with Consolidated VIEs (Details) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Debt Instrument
Long-term debt	[1]	$ 13,714	$ 11,821
Variable Interest Entity, Primary Beneficiary | Automobile And Solar Loan | Consolidation, Eliminations
Debt Instrument
Long-term debt		$ 114

[1] Includes $17 and $24 of other short-term investments, $185 and $322 of portfolio loans and leases, $(2) and $(2) of ALLL, $2 and $2 of other assets, $9 and $1 of other liabilities and $118 and $263 of long-term debt from consolidated VIEs that are included in their respective captions above at December 31, 2022 and 2021, respectively. For further information, refer to Note 12.