| Entity Registrant Name | KROGER CO |
| CIK | 0000056873 |
| Accession number | 0001104659-14-024819 |
| Link to XBRL instance | http://www.sec.gov/Archives/edgar/data/56873/000110465914024819/kr-20140201.xml |
| Fiscal year end | --02-01 |
| Fiscal year focus | 2013 |
| Fiscal period focus | FY |
| Current balance sheet date | 2014-02-01 |
| Current year-to-date income statement start date | 2013-02-03 |
| Commentary | All information interpreted as expected. |
| Level 3 (Disclosure) Text Block concept | us-gaap:PropertyPlantAndEquipmentTextBlock |
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Level 4 Details Key Concepts: Long-term Debt Maturities
| Description | Fact value | US GAAP XBRL Concept |
|---|---|---|
| PPE, Gross | 32,379,000,000 | us-gaap:PropertyPlantAndEquipmentGross |
| Accumulated depreciation | 15,486,000,000 | us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment |
| PPE, Net | 16,893,000,000 | us-gaap:PropertyPlantAndEquipmentNet |
| CHECK | 0 |
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