Goodwill and Other Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Goodwill [Line Items]
Accumulated Amortization	$ (1,123.3)	$ (1,120.0)
Gross Value	1,805.7	1,810.1
Net Value	682.4	690.1
Customer relationships
Goodwill [Line Items]
Finite-lived intangible assets, gross value	1,259.7	1,248.9
Accumulated Amortization	(1,123.3)	(1,104.8)
Finite-lived intangible assets, net value	$ 136.4	144.1
Other intangible assets
Goodwill [Line Items]
Finite-lived intangible assets, gross value		15.2
Accumulated Amortization		(15.2)
Finite-lived intangible assets, net value		$ 0.0
Minimum | Customer relationships
Goodwill [Line Items]
Useful Life (in years)	4 years	5 years
Maximum | Customer relationships
Goodwill [Line Items]
Useful Life (in years)	15 years	15 years
C&W trade name
Goodwill [Line Items]
Indefinite-lived intangible assets	$ 546.0	$ 546.0