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RETIREMENT AND POSTRETIREMENT BENEFIT PLANS (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2015
USD ($)
person
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
DEFINED CONTRIBUTION PLANS      
Accrued liabilities for the supplemental retirement plan $ 32 $ 27  
Expenses under provisions of defined contribution and supplemental retirement plans $ 39 29 $ 34
Pension Benefits      
Postretirement and Other Benefit Plans Disclosure      
Number of employees accruing benefits under defined benefit plans | person 260    
Amounts recognized in the consolidated balance sheets      
Other long-term liabilities $ (27) (21)  
Amounts recognized in the consolidated balance sheets, total (27) (21)  
AOCI included the following after-tax balances      
Net loss (gain) 19 22  
Changes in the benefit obligation:      
Benefit obligation - beginning of year 108 103  
Service cost - benefits earned during the period 4 4 5
Interest cost on projected benefit obligation 4 4 3
Curtailment loss (gain) (12)    
Actuarial loss (gain) 24 6  
Benefits paid (45) (9)  
Benefit obligation - end of year 83 108 103
Changes in plan assets:      
Fair value of plan assets - beginning of year 87 91  
Actual return on plan assets 1 5  
Employer contributions 13    
Benefits paid (45) (9)  
Fair value of plan assets - end of year 56 87 91
Unfunded status: (27) (21)  
Pension plans with accumulated benefit obligations in excess of plan assets      
Pension plans with accumulated benefit obligations in excess of plan assets, projected benefit obligation 83 31  
Pension plans with accumulated benefit obligations in excess of plan assets, accumulated benefit obligation 81 26  
Pension plans with accumulated benefit obligations in excess of plan assets, fair value of plan assets 56 19  
Pension plans with plan assets in excess of accumulated benefit obligations      
Pension plans with plan assets in excess of accumulated benefit obligations, projected benefit obligation   77  
Pension plans with plan assets in excess of accumulated benefit obligations, accumulated benefit obligation   62  
Pension plans with plan assets in excess of accumulated benefit obligations, fair value of plan assets   68  
Net periodic benefit costs:      
Service cost - benefits earned during the period 4 4 5
Interest cost on projected benefit obligation 4 4 3
Expected return on plan assets (5) (6) (4)
Recognized actuarial loss 3 2 4
Settlement cost 18 2 2
Net periodic benefit cost 24 $ 6 10
Amounts that will be amortized from accumulated other comprehensive income (Loss) in next fiscal year      
Estimated net loss that will be amortized from AOCI into net periodic benefit cost over the next fiscal year 3    
Estimated prior service cost that will be amortized from AOCI into net periodic benefit cost over the next fiscal year $ 1    
Benefit Obligation Assumptions:      
Discount rate (as a percent) 3.99% 3.82%  
Rate of compensation increase (as a percent) 4.00% 4.00%  
Net Periodic Benefit Cost Assumptions:      
Discount rate (as a percent) 3.82% 4.45%  
Assumed long tem rate of return on assets (as a percent) 6.50% 6.50%  
Rate of compensation increase (as a percent) 4.00% 4.00%  
Pension Benefits | Maximum      
Assumed health care cost trend rates      
Decrease due to changes in mortality assumptions $ 1    
Postretirement Benefits      
Amounts recognized in the consolidated balance sheets      
Accrued liabilities (1)    
Other long-term liabilities (70) $ (68)  
Amounts recognized in the consolidated balance sheets, total (71) (68)  
AOCI included the following after-tax balances      
Net loss (gain) (4) 2  
Changes in the benefit obligation:      
Benefit obligation - beginning of year 68 63  
Service cost - benefits earned during the period 5 4 5
Interest cost on projected benefit obligation 3 2 3
Curtailment loss (gain) 5    
Actuarial loss (gain) (10) (1)  
Benefit obligation - end of year 71 68 63
Changes in plan assets:      
Unfunded status: (71) (68)  
Net periodic benefit costs:      
Service cost - benefits earned during the period 5 4 5
Interest cost on projected benefit obligation 3 2 3
Recognized actuarial loss   1 2
Curtailment loss 5    
Net periodic benefit cost 13 $ 7 $ 10
Amounts that will be amortized from accumulated other comprehensive income (Loss) in next fiscal year      
Estimated net loss that will be amortized from AOCI into net periodic benefit cost over the next fiscal year 0    
Estimated prior service cost that will be amortized from AOCI into net periodic benefit cost over the next fiscal year $ 0    
Benefit Obligation Assumptions:      
Discount rate (as a percent) 4.81% 4.44%  
Net Periodic Benefit Cost Assumptions:      
Discount rate (as a percent) 4.44% 4.75%  
Assumed health care cost trend rates      
U.S. Consumer Price Index (CPI) increase (as a percent) 1.60% 1.79%  
Effect of 1-percent increase or a 1-percent decrease in these assumed health care cost trend rates      
Effect of 1-percent increase in assumed health care cost trend rates on postretirement benefit obligation $ 5    
Effect of 1-percent decrease in assumed health care cost trend rates on postretirement benefit obligation (4)    
Postretirement Benefits | Maximum      
Assumed health care cost trend rates      
Decrease due to changes in mortality assumptions $ 1    
Postretirement Benefits | Union employees      
Assumed health care cost trend rates      
Increase (decrease) in projected annual rates of health care cost trend rates (as a percent) (0.25%)    
Percentage of projected annual rate during the period 7.50%    
Threshold percentage to decrease projected annual rates 5.00%