Goodwill and Intangible Assets, net - Other Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Other Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 554.6	$ 549.6
Accumulated Amortization	(180.4)	(171.4)
Total intangible assets	607.7	602.9
Tradenames and other
Other Intangible Assets [Line Items]
Indefinite-lived intangible assets (excluding goodwill)	53.1	53.3
Patents, tradenames and trademarks
Other Intangible Assets [Line Items]
Finite-lived intangible assets, gross	146.8	143.7
Accumulated Amortization	(45.6)	(43.4)
Customer/agent relationships and other
Other Intangible Assets [Line Items]
Finite-lived intangible assets, gross	407.8	405.9
Accumulated Amortization	$ (134.8)	$ (128.0)