Litigation, Other Contingencies and Guarantees (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Oct. 29, 2011
Estimate Potential Environmental Liabilities Minimum $ 26
Estimate Potential Environmental Liabilities Maximum 33
Recorded Best Estimate 27
J.C.Penney Direct Marketing Services, Inc. [Member]
 
Maximum Exposure of Guarantee 20
Property Lease Guarantee [Member]
 
Maximum Exposure of Guarantee $ 26