Loans and Leases - Schedule of Troubled Debt Restructuring Modifications (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($) loan	Mar. 31, 2021 USD ($) loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans | loan	81	129
Amortized cost at period end | $	$ 24	$ 23
Interest only
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans | loan	2	6
Amortized cost at period end | $	$ 0	$ 7
Loan term extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans | loan	35	25
Amortized cost at period end | $	$ 20	$ 4
Below market rates
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans | loan	20	53
Amortized cost at period end | $	$ 2	$ 8
Discharge from bankruptcy
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans | loan	24	45
Amortized cost at period end | $	$ 2	$ 4