Commitments and Contingencies - Other (Details) - USD ($) $ in Millions			3 Months Ended
	Jan. 12, 2024	Nov. 28, 2023	Dec. 31, 2023	Dec. 31, 2024
Contingencies
Total commitments to purchase and fund mortgage loans				$ 7,800.0
Black Knight Servicing Technologies, LLC | Pending Litigation
Contingencies
Damages for breach of contract and misappropriation of trade secrets	$ 150.2
Litigation settlement amount			$ 158.4
Black Knight Servicing Technologies, LLC | Pending Litigation | Minimum
Contingencies
Damages for breach of contract and misappropriation of trade secrets		$ 155.2