Mortgage Servicing Rights - Summary of Mortgage Servicing Rights Activity (Details) - MSR - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Servicing Asset at Fair Value, Amount [Roll Forward]
Fair value, beginning of period	$ 4,026,136	$ 4,453,261
Capitalization of MSRs	535,951	525,396
MSR and excess servicing sales	(1,383,098)	(684,621)
Due to changes in valuation inputs or assumptions	141,059	(222,915)
Due to collection/realization of cash flows/other	(128,245)	(96,251)
Fair value, end of period	3,191,803	3,974,870
Changes in fair value:
Due to changes in valuation inputs and assumptions	141,059	(222,915)
Due to collection/realization of cash flows and other	(128,245)	(96,251)
Net reserves and transaction costs on sales of servicing rights	(28,377)	(18,121)
Changes in fair value of mortgage servicing rights	$ (15,563)	$ (337,287)