Benefit Plans - Weighted-Average Assumptions to Determine Net Periodic Postretirement Health Care Cost (Details) - Postretirement Health Care Plan	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.37%	3.66%	4.14%
Health care cost trend rate	6.25%	6.25%	6.50%
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.40%	4.24%	4.55%
Health care cost trend rate	5.44%	5.56%	5.50%