Property, Plant And Equipment Narrative (Details) (USD $)	12 Months Ended
	Feb. 28, 2014	Feb. 22, 2013	Feb. 24, 2012
Property, Plant and Equipment [Line Items]
Gain (Loss) on Sale of Property Plant Equipment	$ 1,700,000	$ (1,600,000)	$ (4,600,000)
Property, plant and equipment, net	377,000,000	353,200,000
Depreciation	56,300,000	53,600,000	52,700,000
Construction in Progress, Estimated Cost to Complete	34,400,000	22,200,000
Real Estate Held-for-sale	5,300,000
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	152,700,000	126,600,000
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Interest Costs Capitalized	0	0	800,000
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	103,200,000	118,100,000
Impairment of Long-Lived Assets to be Disposed of	$ 12,400,000