Credit Facility (Details) (USD $)
In Millions
6 Months Ended
Jul. 30, 2011
Line of credit facility, initiation date April 29, 2011
Line of credit facility, maximum borrowing capacity $ 1,250
Line of credit facility, term (years) five
Credit facility financial covenants
Line of Credit Facility, Covenant Compliance
Standby and Import Letters of Credit [Member]
 
Total standby and import letters of credit $ 196