v2.4.0.8
Document and Entity Information (USD $)
12 Months Ended
Dec. 31, 2014
Jan. 31, 2015
Jun. 30, 2014
Document and Entity Information [Abstract]      
Entity Registrant Name QEP RESOURCES, INC.    
Entity Central Index Key 0001108827    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Common Stock, Shares Outstanding   175,549,934  
Document Fiscal Year Focus 2014    
Document Fiscal Period Focus FY    
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2014    
Entity Public Float     $ 6,213,156,302