Fair Value (Tables)

12 Months Ended

Feb. 22, 2013

Fair Value Disclosures [Abstract]

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

Assets and liabilities measured at fair value in our Consolidated Balance Sheets as of February 22, 2013 and February 24, 2012 are summarized below:

Fair Value of Financial Instruments	February 22, 2013
	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
Corporate debt securities	—		30.3			—		30.3
U.S. agency debt securities	—		44.1			—		44.1
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 of Financial Instruments	February 24, 2012
	Level 1		Level 2			Level 3		Total
Assets:
Cash and cash equivalents	$	112.1	$	—		$	—	$	112.1
Restricted cash	3.5		—			—		3.5
Managed investment portfolio and other investments
Corporate debt securities	—		47.8			—		47.8
U.S. agency debt securities	—		27.7			—		27.7
U.S. government debt securities	1.5		—			—		1.5
Asset backed securities	—		0.9			—		0.9
Municipal debt securities	—		0.9			—		0.9
Other investments	—		0.3			—		0.3
Foreign exchange forward contracts	—		0.9			—		0.9
Auction rate securities	—		—			12.9		12.9
Canadian asset-backed commercial paper restructuring notes	—		—			4.1		4.1
	$	117.1	$	78.5		$	17.0	$	212.6
Liabilities:
Foreign exchange forward contracts	$	—	$	(2.1	)	$	—	$	(2.1	)
	$	—	$	(2.1	)	$	—	$	(2.1	)

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

Below is a roll-forward of assets and liabilities measured at estimated fair value using Level 3 inputs for the years ended February 22, 2013 and February 24, 2012:

Roll-forward of Fair Value Using Level 3 Inputs	Auction Rate Securities			Canadian Asset-Backed Commercial Paper
Balance as of February 25, 2011	$	13.8		$	4.2
Unrealized loss on investments	(0.6		)	—
Other-than-temporary impairments	(0.3		)	—
Currency translation adjustment	—			(0.1		)
Balance as of February 24, 2012	$	12.9		$	4.1
Unrealized gain on investments	1.9			—
Sale of investments	(5.0		)	—
Maturities of investments	—			(0.5		)
Other-than-temporary impairments	—			—
Currency translation adjustment	—			(0.1		)
Balance as of February 22, 2013	$	9.8		$	3.5