Retirement and Other Postretirement Benefit Plans - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
U.S. Non-qualified Defined Benefit Retirement Plans
Amounts recognized on the balance sheet:
Employer contribution to defined benefit retirement plans			$ 0.1		$ 4.9
Expected employer contribution in full current year			0.2
European Defined Benefit Retirement Plans
Amounts recognized on the balance sheet:
Employer contribution to defined benefit retirement plans	$ 1.2	$ 1.3	4.9	$ 4.0	4.3
Expected employer contribution in next fiscal year			6.0
Postretirement Health Care and Life Insurance Benefit Plans
Amounts recognized on the balance sheet:
Employer contribution to defined benefit retirement plans			0.1	$ 0.1	$ 0.2
Expected employer contribution in next fiscal year			$ 0.2