Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Aug. 27, 2016	Aug. 27, 2016	Feb. 27, 2016
Goodwill
Goodwill impairment charges	$ 0	$ 0	$ 0
Impairment of indefinite lived intangible assets	0	0	0
Carrying amount of goodwill
Balance at beginning of period		1,713,475
Change in goodwill resulting from changes to the final purchase price allocation		2,004
Balance at end of period	1,715,479	1,715,479	1,713,475
Retail Pharmacy
Carrying amount of goodwill
Balance at beginning of period		76,124
Balance at end of period	76,124	76,124	76,124
Pharmacy Services
Carrying amount of goodwill
Balance at beginning of period		1,637,351
Change in goodwill resulting from changes to the final purchase price allocation		2,004
Balance at end of period	$ 1,639,355	$ 1,639,355	$ 1,637,351