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Asset Sale to WBA - Carrying amount of assets sold (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Jun. 02, 2018	Jun. 03, 2017	Mar. 03, 2018	Mar. 04, 2017
Current assets held for sale
Current assets held for sale	$ 179,442		$ 438,137
Current liabilities held for sale
Current liabilities held for sale			560,205
Noncurrent liabilities held for sale
Goodwill	1,421,120		1,421,120
Estimated excess cash proceeds decrease from sale of debt	24,500
Use of cash for financing purposes	(525,031)	$ (764)
WBA and Walgreen Co.
Noncurrent liabilities held for sale
Proceeds from assets sold	525,031		3,135,000
Assets under Retail Pharmacy to be Sold \| WBA \| Assets held for sale
Current assets held for sale
Inventories	111,001		264,286
Property and equipment	68,441		158,433
Goodwill			4,629
Intangible assets			10,789
Current assets held for sale	179,442		438,137
Current liabilities held for sale
Current maturities of long-term lease financing obligations			270
Accrued salaries, wages and other current liabilities			6,146
Long-term debt, less current maturities			549,549
Lease financing obligations, less current maturities			838
Other noncurrent liabilities			3,402
Current liabilities held for sale			$ 560,205
Noncurrent liabilities held for sale
Goodwill	$ 76,124
Amounts reclassified as current and noncurrent liabilities held for sale in connection with the Sale, Debt				$ 4,027,400