Fair Value Reconciliation of Changes in Level 3 Balances (Details) (Fair Value, Inputs, Level 3 [Member], Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified	9 Months Ended
	Nov. 22, 2013
Auction Rate Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance at the beginning of the period	$ 9.8
Unrealized gain on investments	0.1
Other-than-temporary impairments	0
Currency translation adjustment	0
Balance at the end of period	9.9
Canadian Asset Backed Commercial Paper Restructuring Notes [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance at the beginning of the period	3.5
Unrealized gain on investments	0.5
Other-than-temporary impairments	0
Currency translation adjustment	(0.2)
Balance at the end of period	$ 3.8