Discontinued Operations and Disposal Groups (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Mar. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]			Other income (expense), net
Sagent M&C, LLC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity Method Investments	$ 232.0	$ 232.0		$ 250.0
Payments to Acquire Equity Method Investments	$ 12.0
Income (Loss) from Equity Method Investments		$ (17.0)	$ (13.0)
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Mortgage Servicing Platform
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Cash				9.9
Disposal Group, Including Discontinued Operation, Consideration				260.0
Disposal Group, Discontinued Operation, Transaction Cost			4.0
Disposal Group, Including Discontinued Operation, Assets, Noncurrent				$ 31.0
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Mortgage Servicing Platform | Sagent M&C, LLC | Mr. Cooper Group Inc.
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners				19.90%
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Mortgage Servicing Platform | Corporate/ Other
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal			$ 223.0