Discontinued Operations - Balance Sheet (Details) - USD ($) $ in Millions	Dec. 03, 2016	Feb. 27, 2016	Dec. 05, 2015
Current assets
Total current assets of discontinued operations	$ 394	$ 376
Long-term assets
Total long-term assets of discontinued operations	591	613
Total assets of discontinued operations	985	989
Current liabilities
Total current liabilities of discontinued operations	305	346
Long-term liabilities
Total long-term liabilities of discontinued operations	45	42
Total liabilities of discontinued operations	350	388
Net assets of discontinued operations	635	601
Save-A-Lot [Member] | Discontinued Operations, Held-for-sale or Disposed of by Sale [Member]
Current assets
Cash and cash equivalents	17	15	$ 47
Receivables, net	37	45
Inventories, net	321	298
Other current assets	19	18
Long-term assets
Property, plant and equipment, net	473	460
Goodwill	106	142
Intangible assets, net	8	8
Disposal Group, Including Discontinued Operation, Deferred Tax Assets, Noncurrent	(8)	(10)
Other assets	12	13
Current liabilities
Accounts payable	244	289
Accrued vacation, compensation and benefits	35	34
Current maturities of capital lease obligations	1	1
Other current liabilities	25	22
Long-term liabilities
Long-term capital lease obligations	9	9
Long-term tax liabilities	7	6
Other long-term liabilities	$ 29	$ 27