Retirement and Other Postretirement Benefit Plans - Schedule of Amounts Recognized on Balance Sheet (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Defined Benefit Retirement Plans | U.S.
Amounts recognized on the balance sheet:
Accrued liabilities	$ 1.1	$ 1.1
Other non-current liabilities	20.3	18.6
Total accrued benefit	$ 21.4	$ 19.7
Defined Benefit Plan, Tax Status [Extensible List]	us-gaap:NonqualifiedPlanMember	us-gaap:NonqualifiedPlanMember	us-gaap:NonqualifiedPlanMember
Defined Benefit Retirement Plans | European
Amounts recognized on the balance sheet:
Noncurrent asset	$ 32.9	$ 23.9
Accrued liabilities	1.0	0.4
Other non-current liabilities	19.7	16.2
Total accrued benefit	20.7	16.6
Postretirement Health Care and Life Insurance Benefit Plans
Amounts recognized on the balance sheet:
Accrued liabilities	0.5	0.5
Other non-current liabilities	3.7	3.9
Total accrued benefit	$ 4.2	$ 4.4