Goodwill and Other Intangibles - Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 03, 2018	Mar. 02, 2019	Mar. 03, 2018	Mar. 04, 2017
Goodwill
Goodwill impairment, net of tax	$ 191,000	$ 235,698	$ 191,000
Carrying amount of goodwill
Beginning Balance		1,421,120	1,682,847
Goodwill impairment	(261,727)	(312,984)	(261,727)	$ 0
Ending Balance	1,421,120	1,108,136	1,421,120	1,682,847
Retail Pharmacy
Carrying amount of goodwill
Beginning Balance		43,492	43,492
Ending Balance	43,492	43,492	43,492	43,492
Pharmacy Services
Goodwill
Accumulated impairment losses	261,727	574,712	261,727
Carrying amount of goodwill
Beginning Balance		1,377,628	1,639,355
Goodwill impairment		(312,984)	(261,727)
Ending Balance	$ 1,377,628	$ 1,064,644	$ 1,377,628	$ 1,639,355

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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