Segment Reporting - Adjusted EBITDA (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended								12 Months Ended
	Feb. 28, 2018	Mar. 02, 2019	Dec. 01, 2018	Sep. 01, 2018	Jun. 02, 2018	Mar. 03, 2018	Dec. 02, 2017	Sep. 02, 2017	Jun. 03, 2017	Mar. 02, 2019	Mar. 03, 2018	Mar. 04, 2017
Segment Reporting
Net (loss) income from continuing operations		$ (255,629)	$ (17,250)	$ (352,348)	$ (41,727)	$ (483,673)	$ (18,182)	$ 188,360	$ (36,037)	$ (666,954)	$ (349,532)	$ 4,080
Interest expense		52,695	56,008	56,233	62,792	50,603	50,308	50,857	51,000	227,728	202,768	200,065
Income tax expense		195,004	(1,471)	(106,559)	(9,497)	216,719	(16,061)	117,450	(12,121)	77,477	305,987	44,438
Depreciation and amortization										357,882	386,057	407,366
LIFO charge (credit)		4,043				(49,220)				23,354	(28,827)	(3,721)
Lease termination and impairment charges		55,898	2,628	39,609	9,859	47,675	3,939	3,113	4,038	107,994	58,765	45,778
Goodwill and intangible asset impairment charges				375,190						375,190	261,727
Loss on debt retirements, net	$ 8,180				554					554
Merger and Acquisition-related costs										(37,821)	(24,283)	(14,066)
Stock-based compensation expense										12,115	25,793	23,482
Restructuring-related costs										4,704
Inventory write-downs related to store closings										13,487	7,586	5,925
Litigation settlement										18,000
Gain on sale of assets, net		$ (26,806)	$ (382)	$ (4,965)	$ (5,859)	$ (5,249)	$ 205	(14,951)	$ (5,877)	(38,012)	(25,872)	(6,649)
Walgreens Boots Alliance, Inc. termination fee								$ (325,000)			(325,000)
Other										12,104	16,119	13,058
Adjusted EBITDA from continuing operations										$ 563,444	$ 559,854	$ 747,888