Annual report pursuant to Section 13 and 15(d)

PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Weighted-Average Assumptions Used to Determine Benefit Obligations) (Details)

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PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Weighted-Average Assumptions Used to Determine Benefit Obligations) (Details)
Dec. 31, 2012
Dec. 31, 2011
Pension Benefits [Member]
   
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Rate of compensation increase 4.00% 4.00%
Pension Benefits [Member] | United States [Member]
   
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Discount rate 3.70% 4.28%
Expected return on plan assets 8.25% 8.25%
Pension Benefits [Member] | Canada [Member]
   
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Discount rate 3.75% 4.00%
Expected return on plan assets 7.25% 7.25%
Other Benefits [Member]
   
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Rate of compensation increase 4.00% 4.00%
Other Benefits [Member] | United States [Member]
   
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Discount rate 3.70% 4.28%
Expected return on plan assets 8.25% 8.25%
Other Benefits [Member] | Canada [Member]
   
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Discount rate 4.00% 4.25%
Expected return on plan assets   7.25%