NET EARNINGS (LOSS) PER SHARE - Calculation of Basic and Diluted Net Earnings (Loss) Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Feb. 27, 2016	Feb. 28, 2015	Feb. 22, 2014
Earnings Per Share [Abstract]
Net earnings from continuing operations	$ 178	$ 127	$ 13
Less net earnings attributable to noncontrolling interests	(8)	(7)	(7)
Net earnings from continuing operations attributable to SUPERVALU INC.	170	120	6
Income from discontinued operations, net of tax	8	72	176
Net earnings attributable to SUPERVALU INC.	$ 178	$ 192	$ 182
Weighted average number of shares outstanding—basic (shares)	263	260	255
Dilutive impact of stock-based awards (shares)	5	4	3
Weighted average number of shares outstanding—diluted (shares)	268	264	258
Basic net earnings per share attributable to SUPERVALU INC.:
Continuing operations (usd per share)	$ 0.64	$ 0.46	$ 0.02
Discontinued operations (usd per share)	0.03	0.28	0.69
Basic net earnings per share (usd per share)	0.68	0.74	0.71
Diluted net earnings per share attributable to SUPERVALU INC.:
Continuing operations (usd per share)	0.63	0.45	0.02
Discontinued operations (usd per share)	0.03	0.27	0.68
Diluted net earnings per share (usd per share)	$ 0.66	$ 0.73	$ 0.70