Acquisition and Divestitures - Summary of Unpaid Principal Balance to Fair Value of Loans and Leases by Portfolio Segment (Details) - USD ($) $ in Thousands		Apr. 01, 2022	Dec. 31, 2022	Jan. 01, 2022	Dec. 31, 2021	Jan. 01, 2021	Dec. 31, 2020	Jan. 01, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid principal balance			$ 2,438,435		$ 2,060,083		$ 1,893,299
Allowance for credit losses at acquisition				$ (2,060,083)		$ (1,893,299)		$ (1,134,333)
Non PCD Acquired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid principal balance		$ 32,896,454
Other discount	[1]	(260,498)
Fair value		32,635,956
PCD Acquired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid principal balance	[2]	3,410,506
Allowance for credit losses at acquisition	[2]	(99,000)
Other discount		(106,814)
Fair value		$ 3,204,692

[1] Includes approximately $242 million of principal balances not expected to be collected.

[2] The unpaid principal balance and allowance for credit losses at acquisition is net of charge-offs of $33 million recognized on the PCD loans.