Goodwill and Other Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (1,032.7)	$ (1,021.8)
Gross Value	1,940.8	1,944.0
Net Value	908.1	922.2
C&W trade name
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	546.0	546.0
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross value	1,377.6	1,380.7
Accumulated Amortization	(1,019.7)	(1,009.0)
Finite-lived intangible assets, net value	$ 357.9	$ 371.7
Customer relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)	1 year	1 year
Customer relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)	15 years	15 years
Other intangible assets
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross value	$ 17.2	$ 17.3
Accumulated Amortization	(13.0)	(12.8)
Finite-lived intangible assets, net value	$ 4.2	$ 4.5
Other intangible assets | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)	5 years	2 years
Other intangible assets | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)	7 years	13 years