Asset Quality - Schedule of Post-Modification Outstanding Recorded Investment by Concession Type for Our Commercial Accruing and Nonaccruing TDRs (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 9	$ 20
Total commercial loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Extension of Maturity Date	0	0
Payment or Covenant Modification/Deferment	0	1
Bankruptcy Plan Modification	0	0
Increase in new commitment or new money	0	0
Total	0	1
Total consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest rate reduction	3	4
Other	6	15
Total	$ 9	$ 19