Fair Value (Tables)

3 Months Ended

May 24, 2013

Fair Value [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	May 24, 2013
Fair Value of Financial Instruments	Level 1		Level 2			Level 3		Total
Assets:
Cash and cash equivalents	$	103.1	$	—		$	—	$	103.1
Restricted cash	3.5		—			—		3.5
Managed investment portfolio and other investments
U.S. agency debt securities	—		19.3			—		19.3
Corporate debt securities	—		15.4			—		15.4
U.S. government debt securities	4.2		—			—		4.2
Asset backed securities	—		4.0			—		4.0
Other investments	—		0.8			—		0.8
Foreign exchange forward contracts	—		0.9			—		0.9
Auction rate securities	—		—			9.9		9.9
Canadian asset-backed commercial paper restructuring notes	—		—			3.8		3.8
	$	110.8	$	40.4		$	13.7	$	164.9
Liabilities
Foreign exchange forward contracts	$	—	$	(0.2	)	$	—	$	(0.2	)
	$	—	$	(0.2	)	$	—	$	(0.2	)
	February 22, 2013
Fair Value of Financial Instruments	Level 1		Level 2			Level 3		Total
Assets:
Cash and cash equivalents	$	150.4	$	—		$	—	$	150.4
Restricted cash	3.5		—			—		3.5
Managed investment portfolio and other investments
U.S. agency debt securities	—		44.1			—		44.1
Corporate debt securities	—		30.3			—		30.3
U.S. government debt securities	4.4		—			—		4.4
Asset backed securities	—		5.5			—		5.5
Municipal debt securities	—		14.1			—		14.1
Other investments	—		2.1			—		2.1
Foreign exchange forward contracts	—		1.3			—		1.3
Auction rate securities	—		—			9.8		9.8
Canadian asset-backed commercial paper restructuring notes	—		—			3.5		3.5
	$	158.3	$	97.4		$	13.3	$	269.0
Liabilities
Foreign exchange forward contracts	$	—	$	(1.9	)	$	—	$	(1.9	)
	$	—	$	(1.9	)	$	—	$	(1.9	)

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

Below is a roll-forward of assets and liabilities measured at fair value using Level 3 inputs for the three months endedMay 24, 2013:

Roll-Forward of Fair Value Using Level 3 Inputs	Auction Rate Securities		Canadian Asset-Backed Commercial Paper Restructuring Notes
Balance as of February 22, 2013	$	9.8	$	3.5
Unrealized gain on investments	0.1		0.4
Other-than-temporary impairments	—		—
Currency translation adjustment	—		(0.1		)
Balance as of May 24, 2013	$	9.9	$	3.8