Condensed Consolidated Segment Financial Information (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 05, 2015	Nov. 29, 2014	Dec. 05, 2015	Nov. 29, 2014
Net sales
Net sales	$ 4,114	$ 4,225	$ 13,583	$ 13,530
Net sales, %	100.00%	100.00%	100.00%	100.00%
Operating earnings
Operating earnings	$ 101	$ 56	$ 353	$ 285
Total operating earnings % of total net sales	2.40%	1.30%	2.60%	2.10%
Interest expense, net	$ 45	$ 46	$ 148	$ 156
Equity in earnings of unconsolidated affiliates	(1)	(1)	(3)	(3)
Earnings from continuing operations before income taxes	57	11	208	132
Income tax provision (benefit)	22	(1)	79	41
Net earnings from continuing operations	35	12	129	91
Income (loss) from discontinued operations, net of tax	0	69	3	68
Net earnings including noncontrolling interests	35	81	132	159
Less net earnings attributable to noncontrolling interests	(1)	(2)	(6)	(6)
Net earnings attributable to SUPERVALU INC.	34	79	126	153
Independent Business [Member]
Net sales
Net sales	$ 1,902	$ 1,972	$ 6,195	$ 6,227
Net sales, %	46.20%	46.70%	45.60%	46.00%
Operating earnings
Operating earnings	$ 54	$ 60	$ 180	$ 180
% of sales	2.80%	3.10%	2.90%	2.90%
Save-A-Lot [Member]
Net sales
Net sales	$ 1,069	$ 1,085	$ 3,568	$ 3,498
Net sales, %	26.00%	25.70%	26.30%	25.80%
Operating earnings
Operating earnings	$ 32	$ 34	$ 115	$ 106
% of sales	2.90%	3.10%	3.20%	3.00%
Retail Food [Member]
Net sales
Net sales	$ 1,097	$ 1,125	$ 3,662	$ 3,660
Net sales, %	26.70%	26.60%	27.00%	27.10%
Operating earnings
Operating earnings	$ 21	$ 28	$ 64	$ 78
% of sales	2.00%	2.50%	1.80%	2.10%
Corporate [Member]
Net sales
Net sales	$ 46	$ 43	$ 158	$ 145
Net sales, %	1.10%	1.00%	1.10%	1.10%
Operating earnings
Operating earnings	$ (6)	$ (66)	$ (6)	$ (79)