Fair Value Measurements - Summary of Change In Fair Value Of Contingent Consideration (Details) - Level 3 $ in Millions	9 Months Ended
Sep. 30, 2022 USD ($)
Business Acquisition [Line Items]
Beginning balance, December 31, 2021	$ 1,193.7
Acquisition of remaining outstanding Class A redeemable noncontrolling interests in Optimal Blue Holdco (Note 1)	(1,156.0)
Ending balance, September 30, 2022	44.0
Compass Analytics
Business Acquisition [Line Items]
Business combination, contingent consideration arrangements, change in amount of contingent consideration, liability	(3.7)
Optimal Blue Holdco, LLC
Business Acquisition [Line Items]
Business combination, contingent consideration arrangements, change in amount of contingent consideration, liability	$ 10.0

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Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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- Definition

Amount of sales of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Fair value of financial instrument classified as derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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