Condensed Consolidated Statements Of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Nov. 23, 2012	Nov. 25, 2011	Nov. 23, 2012	Nov. 25, 2011
Statement of Other Comprehensive Income [Abstract]
Net income	$ 23.6	$ 22.4	$ 66.3	$ 41.8
Other comprehesive income (loss):
Unrealized gain (loss) on investments, net of taxes	0.3	(0.4)	1.0	(0.5)
Minimum pension liability, net of taxes	(1.2)	(1.3)	(4.2)	(4.6)
Derivative adjustments	0	0	0	(0.1)
Foreign currency translation adjustments	7.9	(12.2)	(4.5)	(8.5)
Total other comprehensive income (loss)	7.0	(13.9)	(7.7)	(13.7)
Comprehensive income	$ 30.6	$ 8.5	$ 58.6	$ 28.1