Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	May 05, 2022	Oct. 15, 2019	Mar. 31, 2022
Other Commitments [Line Items]
Deferred purchase agreement, borrowings by client			$ 161.0
Deferred purchase agreement, receivables with credit risk			2,000.0
Deferred purchase agreement, line of credit facility, maximum borrowing capacity			115.0
Loss contingency (up to)			$ 10.0
OneWest Litigation | Subsequent Event
Other Commitments [Line Items]
Litigation settlement	$ 18.5
OneWest Litigation | Servicer Incentives Received Under HAMP
Other Commitments [Line Items]
Loss contingency, damages sought, value		$ 93.0
OneWest Litigation | Aggregate Borrower, Servicer And Investor Incentives Modified Under HAMP
Other Commitments [Line Items]
Loss contingency, damages sought, value		$ 440.0