CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	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
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
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
Costs and expenses:
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 retirement, 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 (benefit)	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
Computation of income attributable to common stockholders:
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
Accretion of redeemable preferred stock											(77)
Cumulative preferred stock dividends											(8,318)
Conversion of Series G and H preferred stock											(25,603)
Income attributable to common stockholders-basic									165,465	2,109,173	215,416
Add back-interest on convertible notes										5,456	5,456
Income attributable to common stockholders-diluted									$ 165,465	$ 2,114,629	$ 220,872
Basic 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 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