Interim Financial Results (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended								12 Months Ended
	Oct. 15, 2014	Feb. 27, 2016	Nov. 28, 2015	Aug. 29, 2015	May. 30, 2015	Feb. 28, 2015	Nov. 29, 2014	Aug. 30, 2014	May. 31, 2014	Feb. 27, 2016	Feb. 28, 2015	Mar. 01, 2014	Aug. 15, 2015	Jul. 02, 2013
Revenues		$ 8,270,136	$ 8,154,184	$ 7,664,776	$ 6,647,561	$ 6,847,929	$ 6,692,333	$ 6,522,584	$ 6,465,531	$ 30,736,657	$ 26,528,377	$ 25,526,413
Cost of revenues		6,228,581	6,151,305	5,742,485	4,788,031	4,892,068	4,769,020	4,628,005	4,662,552	22,910,402	18,951,645	18,202,679
Selling, general and administrative expenses		1,810,288	1,777,647	1,725,826	1,699,585	1,718,327	1,692,437	1,640,524	1,644,354	7,013,346	6,695,642	6,561,162
Lease termination and impairment charges		26,753	7,011	9,637	5,022	21,284	8,702	7,111	4,848	48,423	41,945	41,304
Interest expense		103,678	106,879	115,410	123,607	98,442	97,400	100,950	100,820	449,574	397,612	424,591
Loss on debt retirements, net				33,205			18,512			33,205	18,512	62,443
Loss (gain) on sale of assets, net		(348)	3,331	281	39	(1,259)	(455)	(1,715)	(370)	3,303	(3,799)	(15,984)
Total costs and expenses		8,168,952	8,046,173	7,626,844	6,616,284	6,728,862	6,585,616	6,374,875	6,412,204	30,458,253	26,101,557	25,276,195
Income before income taxes		101,184	108,011	37,932	31,277	119,067	106,717	147,709	53,327	278,404	426,820	250,218
Income tax expense		35,567	48,468	16,463	12,441	(1,715,965)	1,871	19,860	11,881	112,939	(1,682,353)	804
Net income		$ 65,617	$ 59,543	$ 21,469	$ 18,836	$ 1,835,032	$ 104,846	$ 127,849	$ 41,446	$ 165,465	$ 2,109,173	$ 249,414
Basic (loss) income per share (in dollars per share)		$ 0.06	$ 0.06	$ 0.02	$ 0.02	$ 1.88	$ 0.11	$ 0.13	$ 0.04	$ 0.16	$ 2.17	$ 0.23
Diluted (loss) income per share (in dollars per share)		$ 0.06	$ 0.06	$ 0.02	$ 0.02	$ 1.79	$ 0.10	$ 0.13	$ 0.04	$ 0.16	$ 2.08	$ 0.23
Facilities impairment charges		$ 16,401				$ 13,105
LIFO charge (credit)		$ 6,796				$ (23,489)				$ 11,163	$ (18,857)	$ 104,142
8.00% senior secured notes (senior lien) due August 2020
Loss on debt retirements, net				$ 33,205
Debt instrument, stated interest rate (as a percent)		8.00%		8.00%		8.00%				8.00%	8.00%		8.00%	8.00%
10.25% senior secured notes (second lien) due October 2019
Loss on debt retirements, net	$ 18,512
Debt instrument, stated interest rate (as a percent)	10.25%						10.25%							10.25%