Loans and Leases - Schedule of Amortized Cost of Loans (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total net unamortized discount	$ 2,674	$ 118
Non-PCD
Accounts, Notes, Loans and Financing Receivable [Line Items]
Deferred costs, including unamortized costs and unearned fees on non-PCD loans	26	34
Total net unamortized discount	2,337	73
PCD
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total net unamortized discount	$ 337	$ 45