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PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Change in Benefit Obligation, Plan Assets and Funded Status (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
U.S. Postretirement Benefit Plan      
Change in Projected Benefit Obligation      
Projected benefit obligation, beginning of year $ 41 $ 48  
Service cost 0 0 $ 0
Interest cost 1 1 2
Employee contributions 1 1  
Settlements 0 0  
Benefits paid (4) (5)  
Actuarial losses (gains) 2 (4)  
Currency translation adjustments 0 0  
Projected benefit obligation, end of year 41 41 48
Change in Plan Assets      
Fair value of plan assets, beginning of year 0 0  
Actual return on plan assets 0 0  
Employee contributions 1 1  
Company contributions 3 4  
Settlements 0 0  
Benefits paid (4) (5)  
Currency translation adjustments 0 0  
Fair value of plan assets, end of year 0 0 0
Funded Status at end of year (41) (41)  
Recognized as:      
Accrued and other current liabilities (5) (5)  
Other non-current liabilities (36) (36)  
United States | Pension Benefit Plans      
Change in Projected Benefit Obligation      
Projected benefit obligation, beginning of year 214 234  
Service cost 2 2 2
Interest cost 8 7 8
Employee contributions 0 0  
Settlements 0 0  
Benefits paid (15) (16)  
Actuarial losses (gains) 18 (13)  
Currency translation adjustments 0 0  
Projected benefit obligation, end of year 227 214 234
Change in Plan Assets      
Fair value of plan assets, beginning of year 187 206  
Actual return on plan assets 42 (11)  
Employee contributions 0 0  
Company contributions 2 8  
Settlements 0 0  
Benefits paid (15) (16)  
Currency translation adjustments 0 0  
Fair value of plan assets, end of year 216 187 206
Funded Status at end of year (11) (27)  
Recognized as:      
Accrued and other current liabilities 0 0  
Other non-current liabilities (11) (27)  
Ireland, Germany, and Japan | Pension Benefit Plans      
Change in Projected Benefit Obligation      
Projected benefit obligation, beginning of year 235 254  
Service cost 3 3 3
Interest cost 5 5 5
Employee contributions 0 0  
Settlements (2) (2)  
Benefits paid (8) (5)  
Actuarial losses (gains) 30 (10)  
Currency translation adjustments (4) (10)  
Projected benefit obligation, end of year 259 235 254
Change in Plan Assets      
Fair value of plan assets, beginning of year 147 155  
Actual return on plan assets 17 (2)  
Employee contributions 0 0  
Company contributions 10 7  
Settlements (2) (2)  
Benefits paid (8) (5)  
Currency translation adjustments (3) (6)  
Fair value of plan assets, end of year 161 147 $ 155
Funded Status at end of year (98) (88)  
Recognized as:      
Accrued and other current liabilities (2) (2)  
Other non-current liabilities $ (96) $ (86)