Segment Reporting - Adjusted EBITDA (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2019	Dec. 01, 2018	Nov. 30, 2019	Dec. 01, 2018
Segment Reporting
Net income (loss) from continuing operations	$ 52,286	$ (17,250)	$ (125,758)	$ (411,325)
Interest expense	57,856	56,008	176,228	175,033
Income tax expense (benefit)	876	(1,471)	35,878	(117,527)
Depreciation and amortization	82,007	86,685	248,977	270,957
LIFO (credit) charge	(7,440)	5,987	7,553	19,311
Lease termination and impairment charges	166	2,628	2,115	52,096
Goodwill and intangible asset impairment charges				375,190
(Gain) loss on debt retirements, net	(55,692)		(55,692)	554
Merger and Acquisition-related costs		4,175	3,599	30,394
Stock-based compensation expense	3,506	1,317	13,598	11,563
Restructuring-related costs	25,275		93,770
Inventory write-downs related to store closings	93	421	4,083	5,554
Litigation settlement				18,000
Gain on sale of assets, net	(1,371)	(382)	(5,670)	(11,206)
Other	528	4,673	3,946	10,770
Adjusted Earnings Before Interest Income Taxes Depreciation and Amortization from Continuing Operations	$ 158,090	$ 142,791	$ 402,627	$ 429,364