Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Aug. 24, 2012	May 25, 2012	Aug. 26, 2011	Aug. 24, 2012	Aug. 26, 2011	Aug. 30, 2013
Deferred Tax Liability Not Recognized [Line Items]
Effective tax rate	29.90%		42.00%	31.10%	37.90%
Unrecognized tax benefits	$ 27.4			$ 27.4
Income tax expenses affected by unrecognized tax benefits if recognized	17.2			17.2
Reductions in unrecognized tax benefits resulting from lapse of statute		1
Decreased unrecognized tax benefit						(9)
Payments to various U.S. state and local jurisdictions to settle open years under examination	1
Accrued Interest and penalties on unrecognized tax benefit	8.9			8.9
Open tax years by major tax jurisdiction				The Corporation is subject to examination by the Internal Revenue Service for tax years 2006 to the present and various U.S. state and local jurisdictions for tax years 1996 to the present
Maximum [Member]
Deferred Tax Liability Not Recognized [Line Items]
Interest and penalties on unrecognized tax benefit				$ 1.0