CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Feb. 24, 2018	Feb. 25, 2017	Feb. 27, 2016
Income Statement [Abstract]
Net sales	$ 14,157	$ 10,912	$ 11,283
Cost of sales	12,706	9,517	9,812
Gross profit	1,451	1,395	1,471
Selling and administrative expenses	1,258	1,187	1,224
Goodwill and intangible asset impairment charges	0	13	6
Operating earnings	193	195	241
Interest expense, net	132	180	193
Equity in earnings of unconsolidated affiliates	(16)	(5)	(5)
Earnings from continuing operations before income taxes	77	20	53
Income tax provision (benefit)	28	(15)	4
Net earnings from continuing operations	49	35	49
(Loss) income from discontinued operations, net of tax	(3)	619	137
Net earnings including noncontrolling interests	46	654	186
Less net earnings attributable to noncontrolling interests	(1)	(4)	(8)
Net earnings attributable to SUPERVALU INC.	$ 45	$ 650	$ 178
Basic net earnings per common share:
Basic net earnings per share from continuing operations (usd per share)	$ 1.25	$ 0.82	$ 1.08
Basic net earnings per share from discontinued operations (usd per share)	(0.07)	16.35	3.65
Basic net earnings per share (usd per share)	1.18	17.17	4.72
Diluted net earnings per common share:
Diluted net earnings per share from continuing operations (usd per share)	1.25	0.81	1.06
Diluted net earnings per share from discontinued operations (usd per share)	(0.07)	16.19	3.59
Diluted net earnings per share (usd per share)	$ 1.18	$ 17.00	$ 4.66
Weighted average number of shares outstanding:
Basic	38	38	38
Diluted	38	38	38