Goodwill and Intangible Assets, net - Other Intangible Assets (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Other Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 582.8	$ 549.6
Accumulated Amortization	(189.7)	(171.4)
Total intangible assets	636.5	602.9
Tradenames and other
Other Intangible Assets [Line Items]
Indefinite-lived intangible assets (excluding goodwill)	53.7	53.3
Patents, tradenames and trademarks
Other Intangible Assets [Line Items]
Finite-lived intangible assets, gross	150.8	143.7
Accumulated Amortization	(47.3)	(43.4)
Customer/agent relationships and other
Other Intangible Assets [Line Items]
Finite-lived intangible assets, gross	432.0	405.9
Accumulated Amortization	$ (142.4)	$ (128.0)