Interim Financial Results (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended								12 Months Ended
	Feb. 28, 2018	Feb. 29, 2020	Nov. 30, 2019	Aug. 31, 2019	Jun. 01, 2019	Mar. 02, 2019	Dec. 01, 2018	Sep. 01, 2018	Jun. 02, 2018	Feb. 29, 2020	Mar. 02, 2019	Mar. 03, 2018
Interim Financial Results (Unaudited)
Revenues		$ 5,727,242	$ 5,462,298	$ 5,366,264	$ 5,372,589	$ 5,379,645	$ 5,450,060	$ 5,421,362	$ 5,388,490	$ 21,928,393	$ 21,639,557	$ 21,528,968
Cost of revenues		4,460,621	4,273,323	4,221,825	4,245,866	4,215,281	4,267,972	4,260,211	4,219,741	17,201,635	16,963,205	16,748,863
Selling, general and administrative expenses		1,154,300	1,134,854	1,135,530	1,162,652	1,143,202	1,142,555	1,153,991	1,152,627	4,587,336	4,592,375	4,651,262
Lease termination and impairment charges		40,728	166	1,471	478	55,898	2,628	39,609	9,859	42,843	107,994	58,765
Goodwill and intangible asset impairment charges								375,190			375,190	261,727
Goodwill impairment										0	312,984
Interest expense		53,429	57,856	60,102	58,270	52,695	56,008	56,233	62,792	229,657	227,728	202,768
(Gain) loss on debt retirements, net	$ 8,180		(55,692)						554	(55,692)	554
Walgreens Boots Alliance merger termination fee												(325,000)
Loss (gain) on sale of assets, net		9,896	(1,371)	(1,587)	(2,712)	(26,806)	(382)	(4,965)	(5,859)	4,226	(38,012)	(25,872)
Total costs and expenses		5,718,974	5,409,136	5,417,341	5,464,554	5,440,270	5,468,781	5,880,269	5,439,714	22,010,005	22,229,034	21,572,513
(Loss) income from continuing operations before income taxes		8,268	53,162	(51,077)	(91,965)	(60,625)	(18,721)	(458,907)	(51,224)	(81,612)	(589,477)	(43,545)
Income tax expense (benefit)		351,729	876	27,628	7,374	195,004	(1,471)	(106,559)	(9,497)	387,607	77,477	305,987
Net (loss) income from continuing operations		(343,461)	52,286	(78,705)	(99,339)	(255,629)	(17,250)	(352,348)	(41,727)	(469,219)	(666,954)	(349,532)
Net (loss) income from discontinued operations, net of tax		18,740	(801)	(574)	(320)	(17,350)	12,740	(6,792)	256,143	17,045	244,741	1,293,002
Net (loss) income		$ (324,721)	$ 51,485	$ (79,279)	$ (99,659)	$ (272,979)	$ (4,510)	$ (359,140)	$ 214,416	$ (452,174)	$ (422,213)	$ 943,470
Basic income (loss) per share:
Continuing operations		$ (6.43)	$ 0.98	$ (1.48)	$ (1.88)					$ (8.82)
Discontinued operations		0.35	(0.01)	(0.01)						0.32
Net basic income (loss) per share		(6.08)	0.97	(1.49)	(1.88)					(8.50)
Diluted income (loss) per share:
Continuing operations		(6.43)	0.98	(1.48)	(1.88)					(8.82)
Discontinued operations		0.35	(0.02)	(0.01)						0.32
Net diluted income (loss) per share		$ (6.08)	$ 0.96	$ (1.49)	$ (1.88)					(8.50)
Basic and diluted (loss) income per share:
Continuing operations						$ (4.83)	$ (0.33)	$ (6.67)	$ (0.79)	(8.82)	$ (12.62)	$ (6.66)
Discontinued operations						(0.32)	0.24	(0.13)	4.86	0.32	4.63	24.64
Net basic and diluted loss (income) per share						$ (5.15)	$ (0.09)	$ (6.80)	$ 4.07	$ (8.50)	$ (7.99)	$ 17.98
Income tax expense recorded in connection with revaluation of deferred tax assets		$ 347,599				$ 212,252						$ 324,765
Facilities impairment charges		38,342				28,920
LIFO charge (credit)		$ (72,357)				$ 4,043				$ (64,804)	$ 23,354	$ (28,827)