Loans and Leases - Schedule of Nonaccrual Status (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accrual Loans	$ 513	$ 121
Loans > 90 Days and Accruing	100	7
Financing receivable, accrued interest reversed to nonaccrual status	2
Financing receivable, nonaccrual without allowance for credit loss	51	15
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accrual Loans	413	45
Loans > 90 Days and Accruing	55	6
Commercial | Commercial construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accrual Loans	21	4
Loans > 90 Days and Accruing	19	0
Commercial | Owner occupied commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accrual Loans	42	18
Loans > 90 Days and Accruing	6	5
Commercial | Non-owner occupied commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accrual Loans	120	5
Loans > 90 Days and Accruing	0	0
Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accrual Loans	202	15
Loans > 90 Days and Accruing	24	1
Commercial | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accrual Loans	28	3
Loans > 90 Days and Accruing	6	0
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accrual Loans	100	76
Loans > 90 Days and Accruing	45	1
Consumer | Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Accrual Loans	77	54
Loans > 90 Days and Accruing	44	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	3	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	$ 1	$ 1