Reclassifications from Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 27, 2016	Feb. 28, 2015	Mar. 01, 2014
Accumulated other comprehensive loss
Balance - beginning of period	$ 57,056	$ (2,113,702)	$ (2,459,434)
Balance - end of period	581,428	57,056	(2,113,702)
Accumulated other comprehensive Income (Loss)
Accumulated other comprehensive loss
Balance - beginning of period	(45,850)	(37,334)	(61,369)
Other comprehensive (loss) income before reclassifications, net of $3,162, $7,506, and $0 tax benefit	(3,633)	(10,578)	19,211
Amounts reclassified from accumulated other comprehensive loss to net income, net of $1,481, $1,464, and $0 tax expense	1,702	2,062	4,824
Balance - end of period	(47,781)	(45,850)	(37,334)
Defined benefit pension plans
Accumulated other comprehensive loss
Balance - beginning of period	(45,850)	(37,334)	(61,369)
Other comprehensive (loss) income before reclassifications, net of $3,162, $7,506, and $0 tax benefit	(3,633)	(10,578)	19,211
Amounts reclassified from accumulated other comprehensive loss to net income, net of $1,481, $1,464, and $0 tax expense	1,702	2,062	4,824
Balance - end of period	(47,781)	(45,850)	(37,334)
Other comprehensive income before reclassifications, tax benefit	3,162	7,506	0
Amounts reclassified from accumulated other comprehensive loss to net income, tax expense	$ 1,481	$ 1,464	$ 0