Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) Rollforward (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Feb. 28, 2014	Feb. 22, 2013	Feb. 24, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	$ (4.2)
Other comprehensive income (loss) before reclassifications	10.8
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(5.8)
Total other comprehensive income (loss), net	5.0	(5.0)	0.2
Accumulated other comprehensive income (loss)	0.8	(4.2)
Unrealized gain on investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	0.6
Other comprehensive income (loss) before reclassifications	0.3
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(0.1)
Total other comprehensive income (loss), net	0.2
Accumulated other comprehensive income (loss)	0.8
Minimum pension liability [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	18.9
Other comprehensive income (loss) before reclassifications	6.4
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(5.7)
Total other comprehensive income (loss), net	0.7
Accumulated other comprehensive income (loss)	19.6
Derivative adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	(0.1)
Other comprehensive income (loss) before reclassifications	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0
Total other comprehensive income (loss), net	0
Accumulated other comprehensive income (loss)	(0.1)
Foreign currency translation adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	(23.6)
Other comprehensive income (loss) before reclassifications	4.1
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0
Total other comprehensive income (loss), net	4.1
Accumulated other comprehensive income (loss)	$ (19.5)