Goodwill and Other Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Intangible assets with determinable lives
Gross carrying value of finite-lived intangible assets	$ 19.7	$ 20.7
Accumulated amortization	(14.3)	(13.7)
Net carrying value of finite-lived intangible assets	5.4	7.0
Gross carrying value	131.9	131.6
Net carrying value	117.6	117.9
Intangible assets with indefinite lives
Amortization expense	0.6	2.8	$ 5.2
Estimated amortization expense related to intangible assets
2018	0.6
2019	0.6
2020	0.6
2021	0.6
2022	0.6
Trademarks
Intangible assets with indefinite lives
Trademarks	112.2	110.9
Customer relationships
Intangible assets with determinable lives
Gross carrying value of finite-lived intangible assets	1.4	1.4
Accumulated amortization	(1.4)	(1.4)
Net carrying value of finite-lived intangible assets	0.0	0.0
Technology
Intangible assets with determinable lives
Gross carrying value of finite-lived intangible assets	2.1	2.1
Accumulated amortization	(0.5)	(0.4)
Net carrying value of finite-lived intangible assets	1.6	1.7
Patents
Intangible assets with determinable lives
Gross carrying value of finite-lived intangible assets	4.5	4.5
Accumulated amortization	(4.5)	(4.5)
Net carrying value of finite-lived intangible assets	0.0	0.0
Other
Intangible assets with determinable lives
Gross carrying value of finite-lived intangible assets	11.7	12.7
Accumulated amortization	(7.9)	(7.4)
Net carrying value of finite-lived intangible assets	$ 3.8	$ 5.3