Loans Held for Sale at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	$ 3,509,300	$ 9,742,483
Government-insured or guaranteed
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	2,006,157	6,030,518
Conventional mortgage loans
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	1,145,053	2,583,089
Jumbo Loan
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	12,318
Mortgage loans purchased from Ginnie Mae pools serviced by the entity
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	257,175	1,082,444
Mortgage loans repurchased pursuant to representations and warranties
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	42,008	46,432
Home equity lines of credit
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	46,589
Asset Pledged as Collateral without Right
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	3,442,847	9,135,577
Asset Pledged as Collateral without Right | Loan Repo Facility
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	3,139,870	8,629,861
Asset Pledged as Collateral without Right | Mortgage Loan Participation and Sale Agreement member
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	$ 302,977	$ 505,716