Pension Plans and Other Postretirement Benefit Plans - Narrative (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended					9 Months Ended
	Mar. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Feb. 03, 2016
Pension plans and other postretirement benefit plans
Gain on termination and curtailment of pension and other postretirement plans							$ 2.6	$ 0.0
Overfunded defined benefit pension plans		$ 24.4			$ 26.1		$ 24.4
Defined contribution retirement plan
Percentage that the employer contributes of employee contributions under 401(k) plan							100.00%
Maximum percentage of employee compensation match by employer to defined contribution plan							6.00%
Costs related to defined contribution retirement plan		1.2				$ 1.2	$ 3.4	3.8
Shared Plans
Pension plans and other postretirement benefit plans
Allocated pension expense								2.8
Postretirement Life Insurance Plans
Pension plans and other postretirement benefit plans
Increase to net pension liabilities				$ 0.1
Allocated income								1.2
Prior service credit assumed as part of acquisition, net of tax									$ 0.8
Actuarial losses, net of tax									$ 0.7
Gain on termination and curtailment of pension and other postretirement plans		1.0
Pension Plans
Pension plans and other postretirement benefit plans
Increase to net pension liabilities				$ 44.0	4.0
Overfunded defined benefit pension plans		24.4			26.1		24.4
Combined balance of underfunded and unfunded plans included as liabilities		84.0					84.0
Pension liabilities included in other current liabilities		1.2			1.1		1.2
Underfunded and unfunded defined benefit pension plans		82.8			$ 34.0		82.8
Non-U.S.
Pension plans and other postretirement benefit plans
Gain on termination and curtailment of pension and other postretirement plans		0.2	$ 1.4			0.0	1.6	0.0
U.S.
Pension plans and other postretirement benefit plans
Gain on termination and curtailment of pension and other postretirement plans		$ 0.0				$ 0.0	$ 0.0	$ 0.0
Accelerated contribution to the trusts	$ 1.0