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Benefit Plans - Weighted Average Assumptions for Pension Obligation (Details)

v3.21.2
Benefit Plans - Weighted Average Assumptions for Pension Obligation (Details)
Dec. 31, 2020
Dec. 31, 2019
Defined Benefit Pension Plans | U.S.    
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation    
Discount rate 2.50% 3.37%
Rate of compensation increase [1]   3.00%
Defined Benefit Pension Plans | Foreign    
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation    
Discount rate 1.20% 1.50%
Rate of compensation increase [1] 1.75% 1.75%
Other Postretirement Benefits Plans    
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation    
Discount rate 2.60% 3.50%
[1] Includes only plans not frozen to benefit accruals for the respective periods.