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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Aug. 15, 2020 | Aug. 17, 2019 | Aug. 15, 2020 | Aug. 17, 2019
CONSOLIDATED STATEMENTS OF OPERATIONS |  |  |  |
Sales | $ 30,489 | $ 28,168 | $ 72,038 | $ 65,419
Operating expenses |  |  |  |
Merchandise costs, including advertising, warehousing, and transportation, excluding items shown separately below | 23,551 | 22,007 | 55,005 | 50,990
Operating, general and administrative | 5,297 | 4,811 | 12,968 | 11,125
Rent | 204 | 200 | 477 | 474
Depreciation and amortization | 617 | 591 | 1,442 | 1,370
Operating profit | 820 | 559 | 2,146 | 1,460
Other income (expense) |  |  |  |
Interest expense | (135) | (130) | (309) | (327)
Non-service component of company-sponsored pension plan costs | 8 | (4) | 19 | (1)
Gain (loss) on investments | 368 | (45) | 790 | 61
Gain on sale of businesses |  |  |  | 176
Net earnings before income tax expense | 1,061 | 380 | 2,646 | 1,369
Income tax expense | 241 | 93 | 614 | 319
Net earnings including noncontrolling interests | 820 | 287 | 2,032 | 1,050
Net income (loss) attributable to noncontrolling interests | 1 | (10) | 1 | (19)
Net earnings attributable to The Kroger Co. | $ 819 | $ 297 | $ 2,031 | $ 1,069
Net earnings attributable to The Kroger Co. per basic common share | $ 1.04 | $ 0.37 | $ 2.58 | $ 1.32
Average number of common shares used in basic calculation | 777 | 800 | 779 | 799
Net earnings attributable to The Kroger Co. per diluted common share | $ 1.03 | $ 0.37 | $ 2.55 | $ 1.31
Average number of common shares used in diluted calculation | 786 | 805 | 787 | 805

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=117326831&loc=d3e1448-109256 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration