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Restructuring Costs (Tables)
3 Months Ended
Mar. 31, 2012
Restructuring Costs [Abstract]  
Reconciliation of QEP Energy's restructuring liability
The following is a reconciliation of QEP Energy's restructuring liability, which is included within “Accounts payable and accrued expenses” on the Condensed Consolidated Balance Sheets.
 
   
Restructuring Costs
 
   
(in millions)
 
Balance at December 31, 2011
 $- 
Costs incurred and charged to expense
  2.7 
Costs paid or otherwise settled
  (2.4)
Balance at March 31, 2012
 $0.3