Benefit Plans and Other Postretirement Benefits - Weighted-average assumptions - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Defined Contribution Plan, Cost Recognized	$ 4.2	$ 3.8	$ 3.0
U.S. plans, Pension Benefits
Weighted-average assumptions used to determine benefit obligations
Discount rate (as a percent)	4.11%	3.75%
Rate of compensation increase (as a percent)	3.00%	3.00%
Weighted-average assumptions used to determine net periodic benefit cost
Discount rate (as a percent)	3.75%	4.60%	3.75%
Expected long-term return on assets (as a percent)	8.00%	8.00%	8.00%
Rate of compensation increase (as a percent)	3.00%	3.00%	3.00%
Increase (decrease) in benefit obligation due to change in discount rate	$ (19.0)
Number of years of compounded return	20 years
Historical compounded return on plan assets (as a percent)	9.00%
International plans, Pension Benefits
Weighted-average assumptions used to determine benefit obligations
Discount rate (as a percent)	3.14%	2.91%
Rate of compensation increase (as a percent)	1.48%	1.45%
Weighted-average assumptions used to determine net periodic benefit cost
Discount rate (as a percent)	2.91%	4.09%	3.97%
Expected long-term return on assets (as a percent)	5.47%	5.99%	5.50%
Rate of compensation increase (as a percent)	1.45%	1.48%	2.57%
U.S. plans, Other Benefits
Weighted-average assumptions used to determine benefit obligations
Discount rate (as a percent)	3.71%	3.50%
Weighted-average assumptions used to determine net periodic benefit cost
Discount rate (as a percent)	3.50%	4.15%	3.45%