Pensions Benefit Plans and Other Postretirement Benefits - Weighted Average Assumptions (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Weighted average assumptions used to determine net periodic pension costs and net postretirement benefit cost
Tenure used for computing historical long-term rate of return assumption	10 years
U.S. | Pension Benefit Plans
Weighted average assumptions used to determine pension and accumulated postretirement benefit obligations
Discount rate used to determine pension and accumulated postretirement benefit obligations (as a percent)	3.39%	4.36%
Weighted average assumptions used to determine net periodic pension costs and net postretirement benefit cost
Discount rate used to determine net periodic pension costs and net postretirement benefit cost (as a percent)	4.36%	3.69%	4.17%
Expected long-term rate of return on assets (as a percent)	7.25%	7.25%	7.50%
U.S. | Other Postretirement Benefits
Weighted average assumptions used to determine pension and accumulated postretirement benefit obligations
Discount rate used to determine pension and accumulated postretirement benefit obligations (as a percent)	3.31%	4.30%	3.61%
Weighted average assumptions used to determine net periodic pension costs and net postretirement benefit cost
Discount rate used to determine net periodic pension costs and net postretirement benefit cost (as a percent)	4.30%	3.61%	4.11%
Non-U.S. | Pension Benefit Plans
Weighted average assumptions used to determine pension and accumulated postretirement benefit obligations
Discount rate used to determine pension and accumulated postretirement benefit obligations (as a percent)	2.53%	3.01%
Rate of compensation increase (as a percent)	2.89%	2.75%
Weighted average assumptions used to determine net periodic pension costs and net postretirement benefit cost
Discount rate used to determine net periodic pension costs and net postretirement benefit cost (as a percent)	3.01%	2.76%	2.94%
Rate of compensation increase (as a percent)	2.76%	2.78%	2.90%
Expected long-term rate of return on assets (as a percent)	5.50%	5.52%	6.32%
Non-U.S. | Other Postretirement Benefits
Weighted average assumptions used to determine pension and accumulated postretirement benefit obligations
Discount rate used to determine pension and accumulated postretirement benefit obligations (as a percent)	3.00%	3.60%	3.35%
Weighted average assumptions used to determine net periodic pension costs and net postretirement benefit cost
Discount rate used to determine net periodic pension costs and net postretirement benefit cost (as a percent)	3.60%	3.35%	3.55%