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RETIREMENT PLANS (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]        
Defined Benefit Plan, Plan Assets, Contributions by Employer       $ 50
Components of net periodic benefit cost [Abstract]        
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)     $ 0 30
Other Postretirement Benefits Plan [Member]        
Components of net periodic benefit cost [Abstract]        
Service cost $ 0 $ 2 2 5
Interest cost 6 7 18 21
Expected return on assets (1) (1) (4) (4)
Prior service credit, net (10) (11) (30) (31)
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) 0 0 0 0
Net periodic benefit (credit) cost (5) (3) (14) (9)
Foreign Plan [Member] | Pension Plan [Member]        
Components of net periodic benefit cost [Abstract]        
Service cost 3 3 10 9
Interest cost 5 5 14 17
Expected return on assets (8) (7) (25) (23)
Prior service credit, net 0 0 0 0
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) 0 30 0 30
Net periodic benefit (credit) cost 0 31 (1) 33
Domestic Plan [Member] | Pension Plan [Member]        
Components of net periodic benefit cost [Abstract]        
Service cost 10 9 28 29
Interest cost 16 18 49 55
Expected return on assets (35) (34) (105) (102)
Prior service credit, net (1) (1) (3) (3)
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) 0 0 0 0
Net periodic benefit (credit) cost (10) $ (8) $ (31) $ (21)
UK Defined Benefit Pension [Member] | Pension Plan [Member]        
Components of net periodic benefit cost [Abstract]        
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) $ 30