Acquisitions, Goodwill and Other Intangible Assets - Acquired Intangibles (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Dec. 31, 2024
Intangible Asset, Acquired, Finite-Lived [Line Items]
Gross	$ 1,008.5	$ 962.9
Accumulated Amortization	(612.5)	(554.1)
Intangible assets, net	$ 396.0	$ 408.8
Weighted-Average Useful Life (years)	12 years	12 years
DealX
Intangible Asset, Acquired, Finite-Lived [Line Items]
Finite-lived Intangible Assets Acquired	$ 13.1
Finite-lived Intangible Assets Acquired	13.1
Lumonic
Intangible Asset, Acquired, Finite-Lived [Line Items]
Finite-lived Intangible Assets Acquired	10.6
Finite-lived Intangible Assets Acquired	10.6
Customer-related assets
Intangible Asset, Acquired, Finite-Lived [Line Items]
Gross	586.9	$ 572.4
Accumulated Amortization	(316.4)	(281.1)
Intangible assets, net	$ 270.5	$ 291.3
Weighted-Average Useful Life (years)	14 years	14 years
Intellectual property & other
Intangible Asset, Acquired, Finite-Lived [Line Items]
Gross	$ 90.8	$ 88.6
Accumulated Amortization	(72.7)	(67.5)
Intangible assets, net	$ 18.1	$ 21.1
Weighted-Average Useful Life (years)	8 years	8 years
Intellectual property & other | Lumonic
Intangible Asset, Acquired, Finite-Lived [Line Items]
Finite-lived Intangible Assets Acquired	$ 0.1
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life	3 years
Finite-lived Intangible Assets Acquired	$ 0.1
Technology-Based Intangible Assets
Intangible Asset, Acquired, Finite-Lived [Line Items]
Gross	330.8	$ 301.9
Accumulated Amortization	(223.4)	(205.5)
Intangible assets, net	$ 107.4	$ 96.4
Weighted-Average Useful Life (years)	8 years	8 years
Technology-Based Intangible Assets | DealX
Intangible Asset, Acquired, Finite-Lived [Line Items]
Finite-lived Intangible Assets Acquired	$ 12.5
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life	5 years
Finite-lived Intangible Assets Acquired	$ 12.5
Technology-Based Intangible Assets | Lumonic
Intangible Asset, Acquired, Finite-Lived [Line Items]
Finite-lived Intangible Assets Acquired	$ 9.1
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life	8 years
Finite-lived Intangible Assets Acquired	$ 9.1
Customer-Related Intangible Assets | DealX
Intangible Asset, Acquired, Finite-Lived [Line Items]
Finite-lived Intangible Assets Acquired	$ 0.6
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life	10 years
Finite-lived Intangible Assets Acquired	$ 0.6
Customer-Related Intangible Assets | Lumonic
Intangible Asset, Acquired, Finite-Lived [Line Items]
Finite-lived Intangible Assets Acquired	$ 1.4
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life	15 years
Finite-lived Intangible Assets Acquired	$ 1.4