Postretirement Benefit Plans - Weighted Average Assumptions Used (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
U.S. defined benefit plan
Weighted average assumptions used to determine benefit obligations:
Discount rate (in percent)	4.62%	4.23%
Long-term pay progression (in percent)	3.30%	3.30%
Weighted average assumptions used to determine net periodic benefit cost:
Discount rate (in percent)	4.33%	5.11%
Long term rate of return on plan assets (in percent)	5.10%	5.25%
Long-term pay progression (in percent)	3.30%	3.50%
Non-U.S. defined benefit plan
Weighted average assumptions used to determine benefit obligations:
Discount rate (in percent)	2.41%	2.34%
Long-term pay progression (in percent)	3.21%	3.27%
Weighted average assumptions used to determine net periodic benefit cost:
Discount rate (in percent)	2.34%	3.01%
Long term rate of return on plan assets (in percent)	3.55%	3.75%
Long-term pay progression (in percent)	3.27%	3.11%
U.S. retiree health care plan
Weighted average assumptions used to determine benefit obligations:
Discount rate (in percent)	4.40%	4.07%
Weighted average assumptions used to determine net periodic benefit cost:
Discount rate (in percent)	4.15%	4.83%
Long term rate of return on plan assets (in percent)	4.70%	4.50%