Loan Sales and Servicing Activities - Summary of Mortgage Servicing Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Mortgage servicing portfolio
Loans held for sale	$ 3,498,214	$ 9,430,766
Total loans serviced	551,674,682	509,708,281
Delinquent loans:
30 days	10,480,243	6,312,600
60 days	3,192,257	1,795,509
90 days or more - Not in foreclosure	7,718,042	10,751,765
90 days or more - In foreclosure	989,225	873,287
90 days or more - Foreclosed	21,814	24,506
Total delinquent mortgage loans	22,401,581	19,757,667
Bankruptcy	1,416,757	1,395,635
Delinquent loans in COVID-19 related forbearance
30 days	541,586	635,741
60 days	616,206	646,524
90 days or more	3,509,412	3,370,792
Total delinquent loans in COVID-19 related forbearance	4,667,204	4,653,057
Custodial funds managed by the Company	5,112,866	12,308,608
Servicing rights owned
Mortgage servicing portfolio
Loans held for sale	3,498,214	9,430,766
Total loans serviced	318,099,010	287,816,139
Delinquent loans:
30 days	8,903,829	5,338,545
60 days	2,855,176	1,604,782
90 days or more - Not in foreclosure	6,829,985	9,001,137
90 days or more - In foreclosure	914,213	829,494
90 days or more - Foreclosed	13,835	8,017
Total delinquent mortgage loans	19,517,038	16,781,975
Bankruptcy	1,291,038	1,261,980
Delinquent loans in COVID-19 related forbearance
30 days	453,562	554,161
60 days	527,035	556,990
90 days or more	3,042,923	2,732,089
Total delinquent loans in COVID-19 related forbearance	4,023,520	3,843,240
Custodial funds managed by the Company	3,329,709	8,485,081
Contract servicing and subservicing
Mortgage servicing portfolio
Total loans serviced	233,575,672	221,892,142
Delinquent loans:
30 days	1,576,414	974,055
60 days	337,081	190,727
90 days or more - Not in foreclosure	888,057	1,750,628
90 days or more - In foreclosure	75,012	43,793
90 days or more - Foreclosed	7,979	16,489
Total delinquent mortgage loans	2,884,543	2,975,692
Bankruptcy	125,719	133,655
Delinquent loans in COVID-19 related forbearance
30 days	88,024	81,580
60 days	89,171	89,534
90 days or more	466,489	638,703
Total delinquent loans in COVID-19 related forbearance	643,684	809,817
Custodial funds managed by the Company	1,783,157	3,823,527
Non affiliated entities
Mortgage servicing portfolio
Originated	295,032,674	254,524,015
Purchased	19,568,122	23,861,358
Total loans serviced, excluding loans held for sale	314,600,796	278,385,373
Non affiliated entities | Servicing rights owned
Mortgage servicing portfolio
Originated	295,032,674	254,524,015
Purchased	19,568,122	23,861,358
Total loans serviced, excluding loans held for sale	314,600,796	278,385,373
Affiliated entities
Mortgage servicing portfolio
Advised entities	233,575,672	221,892,142
Affiliated entities | Contract servicing and subservicing
Mortgage servicing portfolio
Advised entities	$ 233,575,672	$ 221,892,142