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Impairments, Store Closing Costs and Gain on Sale of Leases (Impairments and Store Closing Related Costs) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Jan. 31, 2015
Nov. 01, 2014
Aug. 02, 2014
May 03, 2014
Feb. 01, 2014
Nov. 02, 2013
Aug. 03, 2013
May 04, 2013
Jan. 31, 2015
Feb. 01, 2014
Feb. 02, 2013
Impairments of properties held and used                 $ 33us-gaap_ImpairmentOfLongLivedAssetsHeldForUse $ 39us-gaap_ImpairmentOfLongLivedAssetsHeldForUse $ 4us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
Severance Costs                 46us-gaap_SeveranceCosts1 43us-gaap_SeveranceCosts1 3us-gaap_SeveranceCosts1
Restructuring and Related Cost, Incurred Cost                 8us-gaap_RestructuringAndRelatedCostIncurredCost 6us-gaap_RestructuringAndRelatedCostIncurredCost (2)us-gaap_RestructuringAndRelatedCostIncurredCost
Impairments, store closing and other costs $ 87m_Impairmentsstoreclosingandothercosts $ 0m_Impairmentsstoreclosingandothercosts $ 0m_Impairmentsstoreclosingandothercosts $ 0m_Impairmentsstoreclosingandothercosts $ 88m_Impairmentsstoreclosingandothercosts $ 0m_Impairmentsstoreclosingandothercosts $ 0m_Impairmentsstoreclosingandothercosts $ 0m_Impairmentsstoreclosingandothercosts $ 87m_Impairmentsstoreclosingandothercosts $ 88m_Impairmentsstoreclosingandothercosts $ 5m_Impairmentsstoreclosingandothercosts