Inventory (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 03, 2018	Mar. 04, 2017	Mar. 03, 2018	Mar. 04, 2017	Feb. 27, 2016
Inventory
Inventories, last-in, first-out (LIFO) cost flow assumption	$ 581,090	$ 607,326	$ 581,090	$ 607,326
LIFO (credit) charge	$ (49,220)	$ 28,987	(28,827)	(3,721)	$ 7,892
Amount of decrease in the cost of revenues due to the effect of LIFO inventory liquidation			$ 2,707	$ 2,375	$ 42,880