Start-Up Costs Start-Up Costs (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 01, 2014	Mar. 02, 2013
Segment Reporting Information [Line Items]
Start Up Costs	$ 8.0	$ 0
Cost of Sales [Member]
Segment Reporting Information [Line Items]
Start Up Costs	5.8
Selling, General and Administrative Expenses [Member]
Segment Reporting Information [Line Items]
Start Up Costs	$ 2.2
Maximum
Segment Reporting Information [Line Items]
Number Of Locations	400