Loans and Leases - Composition of Loan and Lease Portfolio Held for Investment (Parenthetical) (Details) - USD ($) $ in Millions		Dec. 31, 2022		Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered Loans	[1]	$ 69,001		$ 45,738
Other Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest receivable		292		199
Lease Financing, Unearned Income
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unearned income		85		95
Non-Covered Loans		1,679		1,796
Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered Loans	[3]	12,276	[2]	4,034	[4]
Commercial and Industrial | Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered Loans		10,597		2,238
Commercial and Industrial | Specialty Finance Loans | Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-Covered Loans		$ 4,400		$ 3,500

[1] Excludes accrued interest receivable of $292 million and $199 million at December 31, 2022 and December 31, 2021, respectively, which is included in other assets in the Consolidated Statements of Condition.

[2] Includes lease financing receivables, all of which were classified as Pass.

[3] Includes specialty finance loans and leases of $4.4 billion and $3.5 billion, respectively, at December 31, 2022 and December 31, 2021.

[4] Includes lease financing receivables, all of which were classified as Pass.