Commercial Mortgage Origination, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue
Revenues from contracts with customers	$ 478,706	$ 653,533	$ 923,255	$ 1,235,949
Commercial mortgage origination, net
Disaggregation of Revenue
Revenues from contracts with customers	63,969	99,788	107,177	193,850
Fair value of expected net future cash flows from servicing recognized at commitment, net
Disaggregation of Revenue
Other sources of revenue	23,046	31,499	37,145	60,971
Loan originations related fees and sales premiums, net
Disaggregation of Revenue
Other sources of revenue	21,593	17,963	33,556	36,264
Mortgage brokerage and debt placement
Disaggregation of Revenue
Revenues from contracts with customers	$ 19,330	$ 50,326	$ 36,476	$ 96,615