CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Feb. 25, 2017	Feb. 27, 2016	Feb. 28, 2015
Income Statement [Abstract]
Net sales	$ 12,480	$ 12,907	$ 13,277
Cost of sales	10,693	11,033	11,379
Gross profit	1,787	1,874	1,898
Selling and administrative expenses	1,589	1,570	1,648
Goodwill and intangible asset impairment charges	15	6	0
Operating earnings	183	298	250
Interest expense, net	181	195	242
Equity in earnings of unconsolidated affiliates	(5)	(5)	(4)
Earnings from continuing operations before income taxes	7	108	12
Income tax (benefit) provision	(20)	24	(13)
Net earnings from continuing operations	27	84	25
Income from discontinued operations, net of tax	627	102	174
Net earnings including noncontrolling interests	654	186	199
Less net earnings attributable to noncontrolling interests	(4)	(8)	(7)
Net earnings attributable to SUPERVALU INC.	$ 650	$ 178	$ 192
Basic net earnings per common share:
Basic net earnings per share from continuing operations (usd per share)	$ 0.09	$ 0.29	$ 0.07
Basic net earnings per share from discontinued operations (usd per share)	2.37	0.39	0.67
Basic net earnings per share (usd per share)	2.45	0.68	0.74
Diluted net earnings per common share:
Diluted net earnings per share from continuing operations (usd per share)	0.09	0.28	0.07
Diluted net earnings per share from discontinued operations (usd per share)	2.34	0.38	0.66
Diluted net earnings per share (usd per share)	$ 2.43	$ 0.66	$ 0.73
Weighted average number of shares outstanding:
Basic	265	263	260
Diluted	268	268	264