Retirement and Other Postretirement Benefit Plans - Schedule of Amounts Recognized on Balance Sheet (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
U.S. Non-qualified Defined Benefit Retirement Plans
Amounts recognized on the balance sheet:
Accrued liabilities	$ 0.5	$ 4.5
Other non-current liabilities	15.4	14.6
Total accrued benefit	15.9	19.1
European Defined Benefit Retirement Plans
Amounts recognized on the balance sheet:
Noncurrent asset	7.3	3.3
Accrued liabilities	1.8	0.4
Other non-current liabilities	17.0	17.1
Total accrued benefit	18.8	17.5
Postretirement Health Care and Life Insurance Benefit Plans
Amounts recognized on the balance sheet:
Accrued liabilities	0.6	0.6
Other non-current liabilities	5.5	5.7
Total accrued benefit	$ 6.1	$ 6.3