Condensed Consolidated Segment Financial Information (Unaudited) - USD ($) $ in Millions	4 Months Ended
	Jun. 20, 2015	Jun. 14, 2014
Net sales
Net sales	$ 5,407	$ 5,264
Net sales, %	100.00%	100.00%
Operating earnings
Operating earnings	$ 158	$ 135
Total operating earnings % of total net sales	2.90%	2.60%
Interest expense, net	$ 59	$ 64
Equity in earnings of unconsolidated affiliates	(2)	(1)
Earnings from continuing operations before income taxes	101	72
Income tax provision	38	24
Net earnings from continuing operations	63	48
Income (loss) from discontinued operations, net of tax	1	(3)
Net earnings including noncontrolling interests	64	45
Less net earnings attributable to noncontrolling interests	(3)	(2)
Net earnings attributable to SUPERVALU INC.	61	43
Independent Business [Member]
Net sales
Net sales	$ 2,462	$ 2,420
Net sales, %	45.60%	46.00%
Operating earnings
Operating earnings	$ 77	$ 66
% of sales	3.10%	2.80%
Save-A-Lot [Member]
Net sales
Net sales	$ 1,408	$ 1,356
Net sales, %	26.00%	25.70%
Operating earnings
Operating earnings	$ 51	$ 46
% of sales	3.60%	3.40%
Retail Food [Member]
Net sales
Net sales	$ 1,473	$ 1,430
Net sales, %	27.20%	27.20%
Operating earnings
Operating earnings	$ 33	$ 30
% of sales	2.20%	2.10%
Corporate [Member]
Net sales
Net sales	$ 64	$ 58
Net sales, %	1.20%	1.10%
Operating earnings
Operating earnings	$ (3)	$ (7)