Reclassifications from Accumulated Other Comprehensive Loss - Amount Reclassified from AOCL (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 27, 2016	Nov. 28, 2015	Aug. 29, 2015	May. 30, 2015	Feb. 28, 2015	Nov. 29, 2014	Aug. 30, 2014	May. 31, 2014	Feb. 27, 2016	Feb. 28, 2015	Mar. 01, 2014
Reclassification from accumulated other comprehensive loss
Income (loss) before income taxes	$ 101,184	$ 108,011	$ 37,932	$ 31,277	$ 119,067	$ 106,717	$ 147,709	$ 53,327	$ 278,404	$ 426,820	$ 250,218
Reclassification from accumulated other comprehensive loss | Selling, general and administrative expenses
Reclassification from accumulated other comprehensive loss
Total before income tax expense									(3,183)	(3,526)	(4,824)
Defined benefit pension plans
Reclassification from accumulated other comprehensive loss
Net of income tax expense									(1,702)	(2,062)	(4,824)
Defined benefit pension plans | Reclassification from accumulated other comprehensive loss
Reclassification from accumulated other comprehensive loss
Total before income tax expense									1,481	1,464
Income tax expense									(1,702)	(2,062)	(4,824)
Prior service cost | Reclassification from accumulated other comprehensive loss | Selling, general and administrative expenses
Reclassification from accumulated other comprehensive loss
Income (loss) before income taxes									(67)	(240)	(240)
Unrecognized net loss | Reclassification from accumulated other comprehensive loss | Selling, general and administrative expenses
Reclassification from accumulated other comprehensive loss
Total before income tax expense									$ (3,116)	$ (3,286)	$ (4,584)