Inventory (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 02, 2019	Mar. 03, 2018	Mar. 02, 2019	Mar. 03, 2018	Mar. 04, 2017
Inventory
Inventories, last-in, first-out (LIFO) cost flow assumption	$ 604,444	$ 581,090	$ 604,444	$ 581,090
LIFO charge (credit)	$ 4,043	$ (49,220)	23,354	(28,827)	$ (3,721)
Amount of decrease in the cost of revenues due to the effect of LIFO inventory liquidation			$ 5,884	$ 2,707	$ 2,375

The effect of liquidating LIFO (last in first out) inventory layers on income.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section S99
-Paragraph 3
-Subparagraph (SAB Topic 11.F)
-URI http://asc.fasb.org/extlink&oid=27011343&loc=d3e100079-122729

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- References

No definition available.

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- Definition

The change in the inventory reserve representing the cumulative difference in cost between the first in, first out and the last in, first out inventory valuation methods, which change has been reflected in the statement of income during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6b)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Name Accounting Standards Codification
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 330
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-Section S99
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-URI http://asc.fasb.org/extlink&oid=27011343&loc=d3e99989-122729

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- Definition

The amount of LIFO (last in first out) inventory present at the reporting date when inventory is also valued using different valuation methods.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766

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