Segment Reporting - Adjusted EBITDA (Details) - USD ($) $ in Thousands		12 Months Ended
	Jun. 13, 2022	Mar. 04, 2023	Feb. 26, 2022	Feb. 27, 2021
Segment Reporting
Net loss from continuing operations		$ (719,188)	$ (522,372)	$ (99,381)
Interest expense		224,399	191,601	201,388
Income tax expense		(6,467)	(3,780)	(20,157)
Depreciation and amortization		276,583	295,686	327,124
LIFO charge (credit)		53,028	1,314	(51,692)
Facility exit and impairment charges		180,637	164,084	57,714
Goodwill and intangible asset impairment charges		371,200	229,000	29,852
(Gain) loss on debt modifications and retirements, net	$ 41,312	(80,142)	3,235	(5,274)
Merger and Acquisition-related costs			12,797	10,549
Stock-based compensation expense		11,537	13,050	13,003
Restructuring-related costs		108,626	35,121	84,552
Inventory write-downs related to store closings		14,270	5,298	3,709
Litigation and other contractual settlements		53,882	50,212
(Gain) loss on sale of assets, net		(68,586)	5,505	(69,300)
Loss (gain) on Bartell acquisition			5,346	(47,705)
Change in estimate related to manufacturer rebate receivables			15,068
Other		9,401	4,740	3,283
Adjusted EBITDA		$ 429,180	$ 505,905	$ 437,665