Loan Sales and Servicing Activities - Summary of Mortgage Servicing Portfolio (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Mortgage servicing portfolio
Loans held for sale	$ 5,125,298	$ 9,430,766
Total loans serviced	518,810,560	509,708,281
Delinquent loans:
30 days	6,175,006	6,312,600
60 days	1,963,471	1,795,509
90 days or more - Not in foreclosure	8,026,683	10,751,765
90 days or more - In foreclosure	966,320	873,287
90 days or more - Foreclosed	17,811	24,506
Total delinquent mortgage loans	17,149,291	19,757,667
Bankruptcy	1,484,746	1,395,635
Delinquent loans in COVID-19 related forbearance
30 days	598,407	635,741
60 days	755,630	646,524
90 days or more	2,825,805	3,370,792
Total delinquent loans in COVID-19 related forbearance	4,179,842	4,653,057
Custodial funds managed by the Company	10,375,887	12,308,608
Servicing rights owned
Mortgage servicing portfolio
Loans held for sale	5,125,298	9,430,766
Total loans serviced	295,923,189	287,816,139
Delinquent loans:
30 days	5,192,271	5,338,545
60 days	1,732,451	1,604,782
90 days or more - Not in foreclosure	6,912,067	9,001,137
90 days or more - In foreclosure	894,070	829,494
90 days or more - Foreclosed	5,301	8,017
Total delinquent mortgage loans	14,736,160	16,781,975
Bankruptcy	1,354,884	1,261,980
Delinquent loans in COVID-19 related forbearance
30 days	502,603	554,161
60 days	631,453	556,990
90 days or more	2,337,820	2,732,089
Total delinquent loans in COVID-19 related forbearance	3,471,876	3,843,240
Custodial funds managed by the Company	7,082,697	8,485,081
Contract servicing and subservicing
Mortgage servicing portfolio
Total loans serviced	222,887,371	221,892,142
Delinquent loans:
30 days	982,735	974,055
60 days	231,020	190,727
90 days or more - Not in foreclosure	1,114,616	1,750,628
90 days or more - In foreclosure	72,250	43,793
90 days or more - Foreclosed	12,510	16,489
Total delinquent mortgage loans	2,413,131	2,975,692
Bankruptcy	129,862	133,655
Delinquent loans in COVID-19 related forbearance
30 days	95,804	81,580
60 days	124,177	89,534
90 days or more	487,985	638,703
Total delinquent loans in COVID-19 related forbearance	707,966	809,817
Custodial funds managed by the Company	3,293,190	3,823,527
Non affiliated entities
Mortgage servicing portfolio
Originated	268,886,759	254,524,015
Purchased	21,911,132	23,861,358
Total loans serviced, excluding loans held for sale	290,797,891	278,385,373
Non affiliated entities | Servicing rights owned
Mortgage servicing portfolio
Originated	268,886,759	254,524,015
Purchased	21,911,132	23,861,358
Total loans serviced, excluding loans held for sale	290,797,891	278,385,373
Affiliated entities
Mortgage servicing portfolio
Advised entities	222,887,371	221,892,142
Affiliated entities | Contract servicing and subservicing
Mortgage servicing portfolio
Advised entities	$ 222,887,371	$ 221,892,142