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Pension and Other Post-Retirement Benefit Plans (Weighted-Average Assumptions Used Benefit Obligations) (Details)
Dec. 31, 2019
Dec. 31, 2018
Pensions | UNITED STATES    
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]    
Discount rate 3.40% 4.40%
Pensions | International    
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]    
Discount rate 1.70% 2.54%
Rate of compensation increase 2.39% 2.24%
Other Post-retirement Benefits    
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]    
Discount rate 4.31% 5.04%
Rate of compensation increase 4.00% 4.00%