Revenues from Contracts with Customers - Schedule of Revenues from Contracts with Customers and Our Other Sources of Revenues (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue
Revenues from contracts with customers	$ 2,304,500	$ 2,499,008	$ 1,435,401
Revenues	2,705,527	2,906,443	1,904,998
Fair value of expected net future cash flows from servicing recognized at commitment, net
Disaggregation of Revenue
Other sources of revenue	109,926	136,406	194,814
Loan originations related fees and sales premiums, net
Disaggregation of Revenue
Other sources of revenue	74,573	89,075	116,100
Servicing fees and other
Disaggregation of Revenue
Other sources of revenue	216,528	181,954	158,683
Leasing and other commissions
Disaggregation of Revenue
Revenues from contracts with customers	831,874	826,942	513,842
Revenues	831,874	826,942	513,842
Investment sales
Disaggregation of Revenue
Revenues from contracts with customers	606,416	757,744	403,971
Revenues	606,416	757,744	403,971
Mortgage brokerage and debt placement
Disaggregation of Revenue
Revenues from contracts with customers	173,253	180,561	50,135
Management services
Disaggregation of Revenue
Revenues from contracts with customers	$ 692,957	$ 733,761	$ 467,453