Commitments and Contingent Liabilities Variable Interest Entities (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Other Assets [Member]
Variable Interest Entity [Line Items]
Amortization Method Qualified Affordable Housing Project Investments	$ 413	$ 390
Other Liabilities [Member]
Variable Interest Entity [Line Items]
Qualified Affordable Housing Project Investments, Commitment	$ 100	$ 81