Litigation, Other Contingencies and Guarantees (Narrative) (Details) (USD $)
In Millions
6 Months Ended
Jul. 30, 2011
Estimate Potential Environmental Liabilities Minimum $ 29
Estimate Potential Environmental Liabilities Maximum 35
Recorded Best Estimate 29
J.C.Penney Direct Marketing Services, Inc. [Member]
 
Maximum Exposure of Guarantee $ 20