Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Nov. 22, 2013	Nov. 23, 2012	Nov. 22, 2013	Nov. 23, 2012
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss)	$ (7.2)		$ (4.2)
Other comprehensive income (loss) before reclassifications	2.9		2.4
Amounts reclassified from accumulated other comprehensive income	(1.4)		(3.9)
Total other comprehensive loss, net	1.5	7.0	(1.5)	(7.7)
Accumulated other comprehensive income (loss)	(5.7)		(5.7)
Unrealized gain on investments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss)	0.8		0.6
Other comprehensive income (loss) before reclassifications	0		0.3
Amounts reclassified from accumulated other comprehensive income	0		(0.1)
Total other comprehensive loss, net	0		0.2
Accumulated other comprehensive income (loss)	0.8		0.8
Minimum pension liability [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss)	16.5		18.9
Other comprehensive income (loss) before reclassifications	0		0
Amounts reclassified from accumulated other comprehensive income	(1.4)		(3.8)
Total other comprehensive loss, net	(1.4)		(3.8)
Accumulated other comprehensive income (loss)	15.1		15.1
Derivative adjustments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss)	(0.1)		(0.1)
Other comprehensive income (loss) before reclassifications	0		0
Amounts reclassified from accumulated other comprehensive income	0		0
Total other comprehensive loss, net	0		0
Accumulated other comprehensive income (loss)	(0.1)		(0.1)
Foreign currency translation adjustments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss)	(24.4)		(23.6)
Other comprehensive income (loss) before reclassifications	2.9		2.1
Amounts reclassified from accumulated other comprehensive income	0		0
Total other comprehensive loss, net	2.9		2.1
Accumulated other comprehensive income (loss)	$ (21.5)		$ (21.5)