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Pension and Other Postretirement Benefits (Assumptions Used) (Details) - Pension Plan
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
U.S. Plans      
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]      
Discount rate 2.50% 3.20% 4.30%
Compensation increase 4.70% 4.70% 4.50%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]      
Discount rate - service cost 3.60% 4.70% 3.90%
Discount rate - interest cost 2.80% 3.90% 3.20%
Compensation increase 4.70% 4.50% 4.70%
Long-term rate of return 6.80% 7.30% 7.30%
Non-U.S. Plans      
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]      
Discount rate 1.40% 2.10% 2.90%
Compensation increase 3.00% 3.00% 3.20%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]      
Discount rate - service cost 2.60% 3.00% 2.60%
Discount rate - interest cost 1.90% 2.70% 2.20%
Compensation increase 3.00% 3.20% 3.20%
Long-term rate of return 3.30% 4.30% 4.40%