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Reserves for Closed Properties and Property, Plant and Equipment-Related Impairment Charges - Summary of Fair Values for Property, Plant and Equipment Assets Measured at Fair Value on a Non-Recurring Basis (Detail) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 9 Months Ended
Nov. 29, 2014
Nov. 30, 2013
Nov. 29, 2014
Nov. 30, 2013
Property, Plant and Equipment [Abstract]        
Carrying value $ 0svu_PropertyPlantAndEquipmentCarryingValue $ 15svu_PropertyPlantAndEquipmentCarryingValue $ 2svu_PropertyPlantAndEquipmentCarryingValue $ 36svu_PropertyPlantAndEquipmentCarryingValue
Fair value measured using Level 3 inputs 0svu_PropertyPlantAndEquipmentFairValue 11svu_PropertyPlantAndEquipmentFairValue 1svu_PropertyPlantAndEquipmentFairValue 16svu_PropertyPlantAndEquipmentFairValue
Impairment charge $ 0us-gaap_AssetImpairmentCharges $ 4us-gaap_AssetImpairmentCharges $ 1us-gaap_AssetImpairmentCharges $ 20us-gaap_AssetImpairmentCharges