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RETIREMENT PLANS (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Other Postretirement Benefits Plan [Member]    
Components of net periodic benefit cost [Abstract]    
Service cost $ 0 $ 0
Interest cost 6 6
Expected return on assets (1) (2)
Prior service credit, net (10) (10)
Net periodic benefit (credit) cost (5) (6)
Foreign Plan [Member] | Pension Plan [Member]    
Components of net periodic benefit cost [Abstract]    
Service cost 3 4
Interest cost 5 5
Expected return on assets (8) (9)
Prior service credit, net 0 0
Net periodic benefit (credit) cost 0 0
Domestic Plan [Member] | Pension Plan [Member]    
Components of net periodic benefit cost [Abstract]    
Service cost 7 9
Interest cost 19 17
Expected return on assets (32) (37)
Prior service credit, net 0 0
Net periodic benefit (credit) cost $ (6) $ (11)