Securities (Tables)

9 Months Ended

12 Months Ended

Sep. 25, 2011

Dec. 26, 2010

Securities

Summary Of Securities

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Market Value
	(In millions)
Short-term available for sale securities:
U.S. Treasury securities and obligations of U.S. government agencies	$	0.2	$	—	$	—		$	0. 2
Total marketable securities	$	0.2	$	0.0	$	0.0		$	0.2
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Market Value
	(In millions)
Long-term available for sale securities:
U.S. Treasury securities and obligations of U.S. government agencies	$	1.8	$	0.4	$	—		$	2.2
Corporate debt securities		0.3		—		—			0.3
Auction rate securities		35.7		—		(6.7	)		29.0
Total securities	$	37.8	$	0.4	$	(6.7	)	$	31.5

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Market Value
	(In millions)
Short-term available for sale securities:
U.S. Treasury securities and obligations of U.S. government agencies	$	0.1	$	—	$	—	$	0.1
Total marketable securities	$	0.1	$	—	$	—	$	0.1

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Market Value
	(In millions)
Long-term available for sale securities:
U.S. Treasury securities and obligations of U.S. government agencies	$	1.9	$	0.1	$	—		$	2.0
Corporate debt securities		0.3		—		—		$	0.3
Auction rate securities		35.3		—		(7.3	)		28.0
Total securities	$	37.5	$	0.1	$	(7.3	)	$	30.3

Available-For-Sale Securities By Contractual Maturity

	Amortized Cost		Market Value
	(In millions)
Due in one year or less	$	0.2	$	0.2
Due after one year through three years		0.3		0.4
Due after three years through ten years		1.3		1.4
Due after ten years	$	36.2	$	29.7
	$	38.0	$	31.7

Roll Forward Of Amount Related To Credit Losses Recognized In Earnings

	Credit Losses Recognized in Earnings
	(In millions)
Balance at beginning of period	$	14.5
Accretion of impairments included in net income		(0.4	)
Balance at end of period	$	14.1