Lease Termination and Impairment Charges (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Aug. 30, 2014	Aug. 31, 2013	Aug. 30, 2014	Aug. 31, 2013
Lease termination and impairment charges
Lease termination and impairment charges	$ 7,111	$ 11,390	$ 11,959	$ 22,362
Impairment charges
Lease termination and impairment charges
Lease termination and impairment charges	132	265	283	4,866
Lease termination charges
Lease termination and impairment charges
Lease termination and impairment charges	6,979	11,125	11,676	17,496
Closed store and distribution center charges
Balance-beginning of period	270,322	312,011	284,270	323,758
Provision for present value of noncancellable lease payments of closed stores	294	5,981	436	6,374
Changes in assumptions about future sublease income, terminations and changes in interest rates	1,844	(308)	1,417	213
Interest accretion	4,845	5,452	9,827	10,909
Cash payments, net of sublease income	(16,175)	(19,499)	(34,820)	(37,617)
Balance-end of period	$ 261,130	$ 303,637	$ 261,130	$ 303,637