Loans and Leases - Schedule of Nonaccrual Status (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accrual Loans	$ 454	$ 121
Loans > 90 Days and Accruing	50	7
Financing receivable, accrued interest reversed to nonaccrual status	2
Financing receivable, nonaccrual without allowance for credit loss	41	15
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accrual Loans	356	45
Loans > 90 Days and Accruing	39	6
Commercial | Commercial construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accrual Loans	20	4
Loans > 90 Days and Accruing	0	0
Commercial | Owner occupied commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accrual Loans	41	18
Loans > 90 Days and Accruing	3	5
Commercial | Non-owner occupied commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accrual Loans	96	5
Loans > 90 Days and Accruing	28	0
Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accrual Loans	172	15
Loans > 90 Days and Accruing	3	1
Commercial | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accrual Loans	27	3
Loans > 90 Days and Accruing	5	0
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accrual Loans	98	76
Loans > 90 Days and Accruing	11	1
Consumer | Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accrual Loans	74	54
Loans > 90 Days and Accruing	8	0
Consumer | Revolving mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accrual Loans	19	18
Loans > 90 Days and Accruing	0	0
Consumer | Consumer auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accrual Loans	4	3
Loans > 90 Days and Accruing	0	0
Consumer | Consumer other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accrual Loans	1	1
Loans > 90 Days and Accruing	$ 3	$ 1