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Goodwill and Other Identifiable Intangible Assets - Definite-life Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Finite-Lived Intangible Assets, Net [Abstract]
Cost	$ 2,154.4	$ 1,713.6
Accumulated amortization	(605.1)	(497.1)
Net	1,549.3	1,216.5
Customer relationships
Finite-Lived Intangible Assets, Net [Abstract]
Cost	1,903.4	1,571.7
Accumulated amortization	(527.2)	(458.7)
Net	1,376.2	1,113.0
Proprietary technology and patents
Finite-Lived Intangible Assets, Net [Abstract]
Cost	111.5	78.2
Accumulated amortization	(28.4)	(19.5)
Net	83.1	58.7
Other finite-lived intangible assets
Finite-Lived Intangible Assets, Net [Abstract]
Cost	139.5	63.7
Accumulated amortization	(49.5)	(18.9)
Net	$ 90.0	$ 44.8

X

- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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