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CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Per Share data, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Aug. 17, 2013 | Aug. 11, 2012 | Aug. 17, 2013 | Aug. 11, 2012
CONSOLIDATED STATEMENTS OF OPERATIONS |  |  |  |
Sales | $ 22,722 | $ 21,726 | $ 52,765 | $ 50,791
Merchandise costs, including advertising, warehousing, and transportation, excluding items shown separately below | 18,087 | 17,278 | 41,943 | 40,374
Operating, general and administrative | 3,514 | 3,391 | 8,114 | 7,854
Rent | 139 | 139 | 328 | 331
Depreciation | 387 | 383 | 906 | 884
Operating profit | 595 | 535 | 1,474 | 1,348
Interest expense | 99 | 106 | 228 | 247
Earnings before income tax expense | 496 | 429 | 1,246 | 1,101
Income tax expense | 176 | 148 | 442 | 380
Net earnings including noncontrolling interests | 320 | 281 | 804 | 721
Net earnings attributable to noncontrolling interests | 3 | 2 | 6 | 3
Net earnings attributable to The Kroger Co. | $ 317 | $ 279 | $ 798 | $ 718
Net earnings attributable to The Kroger Co. per basic common share (in dollars per share) | $ 0.61 | $ 0.52 | $ 1.54 | $ 1.30
Average number of common shares used in basic calculation (in shares) | 515 | 538 | 515 | 548
Net earnings attributable to The Kroger Co. per diluted common share (in dollars per share) | $ 0.60 | $ 0.51 | $ 1.52 | $ 1.29
Average number of common shares used in diluted calculation (in shares) | 521 | 541 | 520 | 552
Dividends declared per common share (in dollars per share) | $ 0.150 | $ 0.115 | $ 0.300 | $ 0.230

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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 07-4 -Paragraph 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 171 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1448-109256 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 8 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Weighted-Average Number of Common Shares Outstanding -URI http://asc.fasb.org/extlink&oid=6528421 + Details
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