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Goodwill and Identifiable Intangible Assets - Narrative (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) Reportingunit	Sep. 30, 2024 USD ($)	Feb. 28, 2025 USD ($)	Dec. 31, 2024 USD ($)
Finite-Lived Intangible Assets [Line Items]
Amortization of intangibles	$ 11.7	$ 11.7	$ 34.6	$ 33.2
Accumulated impairment losses	$ 530.8		$ 530.8			$ 530.8
Number of reporting units | Reportingunit			2
Buro
Finite-Lived Intangible Assets [Line Items]
Identifiable intangibles acquired					$ 5.8

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