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PENSION AND POST-RETIREMENT BENEFITS - Weighted-average Assumptions Used to Determine Net Periodic Benefit Cost (Details)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
U.S. Plans    
Defined Benefit Plan Disclosure [Line Items]    
Discount rate (as a percent) 4.13% 3.47%
Expected long-term return on plan assets (as a percent) 6.00% 6.00%
Rate of future compensation increases (as a percent) 3.50% 3.50%
International Plans    
Defined Benefit Plan Disclosure [Line Items]    
Discount rate (as a percent) 2.52% 2.19%
Expected long-term return on plan assets (as a percent) 4.86% 4.95%
Rate of future compensation increases (as a percent) 2.02% 1.75%