Segment Reporting - Adjusted EBITDA (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 31, 2019	Sep. 01, 2018	Aug. 31, 2019	Sep. 01, 2018
Segment Reporting
Net loss from continuing operations	$ (78,705)	$ (352,348)	$ (178,044)	$ (394,075)
Interest expense	60,102	56,233	118,372	119,025
Income tax expense (benefit)	27,628	(106,559)	35,002	(116,056)
Depreciation and amortization	83,044	89,743	166,970	184,272
LIFO charge	7,504	3,358	14,993	13,324
Lease termination and impairment charges	1,471	39,609	1,949	49,468
Goodwill and intangible asset impairment charges		375,190		375,190
Loss on debt retirements, net				554
Merger and Acquisition-related costs	514	19,031	3,599	26,219
Stock-based compensation expense	4,712	5,215	10,092	10,246
Restructuring-related costs	25,145		68,495
Inventory write-downs related to store closings	3,149	1,300	3,990	5,133
Litigation settlement		18,000		18,000
Gain on sale of assets, net	(1,587)	(4,965)	(4,299)	(10,824)
Other	1,213	4,774	3,418	6,097
Adjusted Earnings Before Interest Income Taxes Depreciation and Amortization from Continuing Operations	$ 134,190	$ 148,581	$ 244,537	$ 286,573