Annual report pursuant to Section 13 and 15(d)

Retirement Plans (Summary Of Changes In Fair Value Of Pension Plan Level 3 Assets) (Details)

v2.4.1.9
Retirement Plans (Summary Of Changes In Fair Value Of Pension Plan Level 3 Assets) (Details) (Pension Plan [Member], USD $)
In Millions, unless otherwise specified
12 Months Ended
Jan. 31, 2015
Feb. 01, 2014
Feb. 02, 2013
Fair value of plan assets, beginning of year     $ 3,387us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Actual gain (loss) on plan assets:      
Fair value of plan assets, end of year 3,636us-gaap_DefinedBenefitPlanFairValueOfPlanAssets 3,546us-gaap_DefinedBenefitPlanFairValueOfPlanAssets 3,387us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Significant Unobservable Inputs (Level 3) [Member]
     
Fair value of plan assets, beginning of year 548us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_PensionPlansDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
594us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_PensionPlansDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
 
Actual gain (loss) on plan assets:      
Relating to assets still held at the reporting date 18us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_PensionPlansDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
1us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_PensionPlansDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
 
Relating to assets sold during the period 22us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_PensionPlansDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
48us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_PensionPlansDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
 
Purchases 71us-gaap_DefinedBenefitPlanBusinessCombinationsAndAcquisitionsPlanAssets
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_PensionPlansDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
77us-gaap_DefinedBenefitPlanBusinessCombinationsAndAcquisitionsPlanAssets
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_PensionPlansDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
 
Sales (59)us-gaap_DefinedBenefitPlanDivestituresPlanAssets
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_PensionPlansDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
(172)us-gaap_DefinedBenefitPlanDivestituresPlanAssets
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_PensionPlansDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
 
Fair value of plan assets, end of year $ 600us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_PensionPlansDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
$ 548us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_PensionPlansDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member