Loan Sales and Servicing Activities - Summary of Mortgage Servicing Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Mortgage servicing portfolio
Loans held for sale	$ 4,287,585	$ 9,430,766
Total loans serviced	539,101,773	509,708,281
Subserviced for the Company	375,370
Delinquent loans:
30 days	8,907,321	6,312,600
60 days	2,695,183	1,795,509
90 days or more - Not in foreclosure	6,766,040	10,751,765
90 days or more - In foreclosure	878,920	873,287
90 days or more - Foreclosed	17,554	24,506
Total delinquent mortgage loans	19,265,018	19,757,667
Bankruptcy	1,415,175	1,395,635
Delinquent loans in COVID-19 related forbearance
30 days	839,749	635,741
60 days	940,662	646,524
90 days or more	3,249,077	3,370,792
Total delinquent loans in COVID-19 related forbearance	5,029,488	4,653,057
Custodial funds managed by the Company	8,284,497	12,308,608
Servicing rights owned
Mortgage servicing portfolio
Loans held for sale	4,287,585	9,430,766
Total loans serviced	308,122,954	287,816,139
Subserviced for the Company	375,370
Delinquent loans:
30 days	7,604,547	5,338,545
60 days	2,447,898	1,604,782
90 days or more - Not in foreclosure	5,980,180	9,001,137
90 days or more - In foreclosure	807,860	829,494
90 days or more - Foreclosed	8,959	8,017
Total delinquent mortgage loans	16,849,444	16,781,975
Bankruptcy	1,288,876	1,261,980
Delinquent loans in COVID-19 related forbearance
30 days	717,783	554,161
60 days	830,299	556,990
90 days or more	2,813,468	2,732,089
Total delinquent loans in COVID-19 related forbearance	4,361,550	3,843,240
Custodial funds managed by the Company	5,385,565	8,485,081
Contract servicing and subservicing
Mortgage servicing portfolio
Total loans serviced	230,978,819	221,892,142
Delinquent loans:
30 days	1,302,774	974,055
60 days	247,285	190,727
90 days or more - Not in foreclosure	785,860	1,750,628
90 days or more - In foreclosure	71,060	43,793
90 days or more - Foreclosed	8,595	16,489
Total delinquent mortgage loans	2,415,574	2,975,692
Bankruptcy	126,299	133,655
Delinquent loans in COVID-19 related forbearance
30 days	121,966	81,580
60 days	110,363	89,534
90 days or more	435,609	638,703
Total delinquent loans in COVID-19 related forbearance	667,938	809,817
Custodial funds managed by the Company	2,898,932	3,823,527
Non affiliated entities
Mortgage servicing portfolio
Originated	283,653,037	254,524,015
Purchased	20,182,332	23,861,358
Total loans serviced, excluding loans held for sale	303,835,369	278,385,373
Non affiliated entities | Servicing rights owned
Mortgage servicing portfolio
Originated	283,653,037	254,524,015
Purchased	20,182,332	23,861,358
Total loans serviced, excluding loans held for sale	303,835,369	278,385,373
Affiliated entities
Mortgage servicing portfolio
Advised entities	230,978,819	221,892,142
Affiliated entities | Contract servicing and subservicing
Mortgage servicing portfolio
Advised entities	$ 230,978,819	$ 221,892,142