Annual report pursuant to Section 13 and 15(d)

BENEFIT PLANS - Narrative (Details)

v3.3.1.900
BENEFIT PLANS - Narrative (Details)
 12 Months Ended
Dec. 31, 2015
USD ($)
age
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Amount to be Amortized from Accumulated Other Comprehensive Income (Loss) Next Fiscal Year:      
Future amortization of transition obligation (asset) $ 0    
Future amortization of prior service cost (credit) 2,000,000    
Future amortization gain (loss) $ 8,000,000    
Defined Contribution Plan:      
Employer matching contribution, percent of match 4.00%    
Discretionary profit-share contribution, percent of annual base pay 1.00% 1.00%  
Pension Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Contribution to plan $ 0    
Accumulated benefit obligation 755,000,000 $ 800,000,000  
Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets:      
Accumulated benefit obligations in excess of plan assets, aggregate projected benefit obligation 160,000,000    
Accumulated benefit obligation in excess of plan assets, aggregate accumulated benefit obligation 160,000,000    
Defined benefit plan expenses 4,000,000 2,000,000 $ 2,000,000
Estimated net periodic pension cost in next fiscal year $ 2,000,000    
Defined Benefit Plan, Information about Plan Assets:      
Average duration of plan assets investment in bonds, years 12 years 2 months    
Estimated life of benefit obligations 11 years 11 months    
Pension Benefits | Equity securities      
Defined Benefit Plan, Information about Plan Assets:      
Actual plan asset allocations 45.00%    
Target plan asset allocations range minimum 20.00%    
Target plan asset allocations range maximum 50.00%    
Pension Benefits | Bonds      
Defined Benefit Plan, Information about Plan Assets:      
Actual plan asset allocations 52.00%    
Target plan asset allocations range minimum 50.00%    
Target plan asset allocations range maximum 80.00%    
Pension Benefits | Cash and cash equivalents      
Defined Benefit Plan, Information about Plan Assets:      
Actual plan asset allocations 3.00%    
Post-Retirement Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Healthcare and life insurance benefits, employee retirement age | age 55    
Healthcare and life insurance benefits, requisite service period 10 years    
Life insurance coverage, maximum $ 50,000    
Reduction in liability due to plan amendment 5,000,000    
Contributions received for retiree medical program (less than $1 million) 1,000,000 3,000,000  
Defined Benefit Plan, Information about Plan Assets:      
Estimated future employer contributions in next fiscal year $ 0    
Defined Benefit Plan, Assumed Health Care Cost Trend Rates:      
Health care cost trend rate assumed for next fiscal year 7.00%    
Ultimate health care cost trend rate 4.50%    
Year that rate reaches ultimate trend rate 2028    
Supplemental Executive Retirement Plan      
Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets:      
Defined benefit plan expenses $ 1,000,000 1,000,000 $ 4,000,000
Defined Benefit Plan, Assumed Health Care Cost Trend Rates:      
Accrued pension liability $ 34,000,000 $ 35,000,000