Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	May. 30, 2015	May. 31, 2014	Feb. 28, 2015
Goodwill and Other Intangible Assets
Goodwill impairment charges	$ 0		$ 0
Finite-lived intangible assets
Gross Carrying Amount	2,107,419		2,093,531
Accumulated Amortization	(1,704,334)		(1,672,051)
Unfavorable lease intangibles	53,638		55,571
Amortization expense for intangible assets and liabilities	31,941	$ 29,237
Anticipated annual amortization expense for intangible assets and liabilities
2016	118,669
2017	105,472
2018	67,542
2019	41,508
2020	22,107
Favorable leases and other
Finite-lived intangible assets
Gross Carrying Amount	657,137		653,377
Accumulated Amortization	$ (490,273)		$ (481,041)
Remaining Weighted Average Amortization Period	8 years		8 years
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Finite-lived intangible assets
Gross Carrying Amount	$ 1,450,282		$ 1,440,154
Accumulated Amortization	$ (1,214,061)		$ (1,191,010)
Remaining Weighted Average Amortization Period	3 years		3 years