Accumulated Other Comprehensive Loss - Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	May 31, 2013	May 25, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before income tax expense	$ 52,546	$ 10,420
Tax benefit	(19,153)	(3,170)
Total, net of tax	(377)	(475)
Total reclassifications	(334)
Pensions and Other Postretirement Benefits [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications	(334)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Pensions and Other Postretirement Benefits [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Actuarial losses, net	(704)
Prior service cost	274
Income before income tax expense	(430)
Tax benefit	96
Total, net of tax	(334)
Total reclassifications	$ (334)