Annual report pursuant to Section 13 and 15(d)

PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Target Allocation and Actual Asset Allocations for Pension and VEBA Plan Assets) (Details)

v2.4.0.6
PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Target Allocation and Actual Asset Allocations for Pension and VEBA Plan Assets) (Details)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Pension Benefits [Member]
    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Weighted-average asset allocation 100.00% 100.00%
Defined Benefit Plan, Target Plan Asset Allocations 100.00%  
Pension Benefits [Member] | Equity Securities [Member]
    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Weighted-average asset allocation 45.90% 41.70%
Defined Benefit Plan, Target Plan Asset Allocations 44.40%  
Pension Benefits [Member] | Fixed Income Investments [Member]
    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Weighted-average asset allocation 29.50% 31.10%
Defined Benefit Plan, Target Plan Asset Allocations 28.60%  
Pension Benefits [Member] | Hedge Funds [Member]
    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Weighted-average asset allocation 10.20% 13.50%
Defined Benefit Plan, Target Plan Asset Allocations 10.00%  
Pension Benefits [Member] | Private Equity Funds [Member]
    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Weighted-average asset allocation 3.50% 5.20%
Defined Benefit Plan, Target Plan Asset Allocations 5.40%  
Pension Benefits [Member] | Structured Finance [Member]
    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Weighted-average asset allocation 6.70% 6.00%
Defined Benefit Plan, Target Plan Asset Allocations 5.80%  
Pension Benefits [Member] | Real Estate [Member]
    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Weighted-average asset allocation 3.50% 2.20%
Defined Benefit Plan, Target Plan Asset Allocations 5.80%  
Pension Benefits [Member] | Cash [Member]
    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Weighted-average asset allocation 0.70% 0.30%
Defined Benefit Plan, Target Plan Asset Allocations 0.00%  
Veba Trust [Member]
    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Weighted-average asset allocation 100.00% 100.00%
Defined Benefit Plan, Target Plan Asset Allocations 100.00%  
Veba Trust [Member] | Equity Securities [Member]
    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Weighted-average asset allocation 42.60% 42.00%
Defined Benefit Plan, Target Plan Asset Allocations 39.90%  
Veba Trust [Member] | Fixed Income Investments [Member]
    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Weighted-average asset allocation 32.90% 33.50%
Defined Benefit Plan, Target Plan Asset Allocations 32.00%  
Veba Trust [Member] | Hedge Funds [Member]
    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Weighted-average asset allocation 9.80% 14.60%
Defined Benefit Plan, Target Plan Asset Allocations 10.00%  
Veba Trust [Member] | Private Equity Funds [Member]
    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Weighted-average asset allocation 2.60% 4.50%
Defined Benefit Plan, Target Plan Asset Allocations 6.10%  
Veba Trust [Member] | Structured Finance [Member]
    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Weighted-average asset allocation 5.30% 0.00%
Defined Benefit Plan, Target Plan Asset Allocations 5.00%  
Veba Trust [Member] | Real Estate [Member]
    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Weighted-average asset allocation 6.70% 5.30%
Defined Benefit Plan, Target Plan Asset Allocations 7.00%  
Veba Trust [Member] | Cash [Member]
    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Weighted-average asset allocation 0.10% 0.10%
Defined Benefit Plan, Target Plan Asset Allocations 0.00%