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Union Labor Contracts Expiring in 2012 (Detail)
 12 Months Ended
Dec. 31, 2011
Person
Significant Accounting Policies [Line Items]  
APPROXIMATE NUMBER OF HOURLY EMPLOYEES 2,780
Union Contracts Expired On 31 May 2012
  
Significant Accounting Policies [Line Items]  
CONTRACT EXPIRATION DATE May 31, 2012
DIVISION AND LOCATION Pulp & Paperboard Division-No. 4 Power Boiler Unit Lewiston, Idaho
UNION International Association of Machinists & Aerospace Workers (IAMAW)
APPROXIMATE NUMBER OF HOURLY EMPLOYEES 45
Union Contracts Expired On 29 June 2012
  
Significant Accounting Policies [Line Items]  
CONTRACT EXPIRATION DATE Jun. 29, 2012
DIVISION AND LOCATION Consumer Products Division- Wiggins, Mississippi
UNION United Steel Workers (USW)
APPROXIMATE NUMBER OF HOURLY EMPLOYEES 80
Union Contracts Expired On 31 July 2012
  
Significant Accounting Policies [Line Items]  
CONTRACT EXPIRATION DATE Jul. 31, 2012
DIVISION AND LOCATION Pulp & Paperboard Division-Cypress Bend, Arkansas
UNION United Steel Workers (USW)
APPROXIMATE NUMBER OF HOURLY EMPLOYEES 235