Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information (USD $)
12 Months Ended
Jan. 31, 2015
Mar. 16, 2015
Aug. 02, 2014
Document and Entity Information [Abstract]      
Entity Registrant Name J C PENNEY CO INC    
Entity Central Index Key 0001166126    
Current Fiscal Year End Date --02-02    
Entity Filer Category Large Accelerated Filer    
Document Type 10-K    
Document Period End Date Jan. 31, 2015    
Document Fiscal Year Focus 2014    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Common Stock, Shares Outstanding   305,120,922dei_EntityCommonStockSharesOutstanding  
Trading Symbol jcp    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 2,930,303,291dei_EntityPublicFloat