Goodwill and Identifiable Intangible Assets, net - Summary of Identifiable Intangible Assets, net (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 310.8	$ 308.4
Accumulated Amortization	(143.8)	(135.2)
Net	167.0	173.2
Total identifiable intangible assets, net
Gross Carrying Value	319.7	317.3
Net	175.9	182.1
Trademarks and tradenames with indefinite lives
Indefinite-lived Intangible Assets [Line Items]
Trademarks and tradenames with indefinite lives	8.9	8.9
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	99.2	102.0
Accumulated Amortization	(31.2)	(30.5)
Net	68.0	71.5
Trademarks and tradenames with indefinite lives
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	30.5	31.1
Accumulated Amortization	(5.3)	(4.3)
Net	25.2	26.8
Software
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	101.8	95.3
Accumulated Amortization	(68.2)	(62.8)
Net	33.6	32.5
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	66.1	66.8
Accumulated Amortization	(28.6)	(27.2)
Net	37.5	39.6
Contracts
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	13.2	13.2
Accumulated Amortization	(10.5)	(10.4)
Net	$ 2.7	$ 2.8