Investments (Tables)

6 Months Ended

Jun. 29, 2012

Available-For-Sale Marketable Securities

At June 29, 2012, and December 30, 2011, available-for-sale marketable securities consisted of the following:

	Amortized Cost		Unrealized Gain		Unrealized Loss			Fair Value
June 29, 2012
U.S. government debt obligations	$	158.4	$	0.4	$	(0.1	)	$	158.7
Corporate debt obligations guaranteed by FDIC		20.2		0.1		—			20.3
Corporate debt obligations		190.4		1.2		(0.2	)		191.4
Mortgaged backed debt obligations guaranteed by GNMA		89.6		0.6		(0.2	)		90.0
Certificates of deposit guaranteed by FDIC		1.2		—		—			1.2
Foreign government debt obligations		192.7		1.9		(0.1	)		194.5
Foreign corporate debt obligations		114.7		0.5		(0.1	)		115.1
Total	$	767.2	$	4.7	$	(0.7	)	$	771.2
December 30, 2011
U.S. government debt obligations	$	195.2	$	0.5	$	—		$	195.7
Corporate debt obligations guaranteed by FDIC		66.6		0.2		—			66.8
Corporate debt obligations		201.4		0.8		(0.7	)		201.5
Mortgaged backed debt obligations guaranteed by GNMA		90.9		0.4		(0.1	)		91.2
Certificates of deposit guaranteed by FDIC		1.5		—		—			1.5
Foreign government debt obligations		221.5		1.5		—			223.0
Foreign corporate debt obligations		64.1		0.2		(0.1	)		64.2
Total	$	841.2	$	3.6	$	(0.9	)	$	843.9

Maturities Of Available-For-Sale Marketable Securities

The following table summarizes the maturities of our available-for-sale marketable securities at June 29, 2012:

	Amortized Cost		Fair Value
Less than 12 months	$	188.0	$	188.3
Due in 1 to 5 years		489.7		492.9
Due after 5 years		89.5		90.0
Total	$	767.2	$	771.2

Investments In Marketable Securities With Unrealized Losses

Investments in marketable securities with unrealized losses at June 29, 2012, and December 30, 2011, were as follows:

	Unrealized Loss Less than 12 months					Unrealized Loss Greater than 12 months				Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
June 29, 2012
U.S. government debt obligations	$	46.2	$	(0.1	)	$	—	$	—	$	46.2	$	(0.1	)
Corporate debt obligations		46.3		(0.2	)		—		—		46.3		(0.2	)
Mortgaged backed debt obligations guaranteed by GNMA		37.1		(0.2	)		—		—		37.1		(0.2	)
Foreign government debt obligations		49.1		(0.1	)		—		—		49.1		(0.1	)
Foreign corporate debt obligations		32.6		(0.1	)		—		—		32.6		(0.1	)
Total	$	211.3	$	(0.7	)	$	—	$	—	$	211.3	$	(0.7	)
December 30, 2011
Corporate debt obligations	$	81.0	$	(0.7	)	$	—	$	—	$	81.0	$	(0.7	)
Mortgaged backed debt obligations guaranteed by GNMA		31.4		(0.1	)		—		—		31.4		(0.1	)
Foreign corporate debt obligations		24.1		(0.1	)		—		—		24.1		(0.1	)
Total	$	136.5	$	(0.9	)	$	—	$	—	$	136.5	$	(0.9	)

Gross Realized Gains And Losses Related To Fixed Income Investments

The following table presents gross realized gains and losses related to fixed income investments for the three months and six months ending June 29, 2012, and July 1, 2011:

	Second Quarter						Six Months
	6/29/12			7/1/11			6/29/12			7/1/11
Gross realized gains	$	0.2		$	1.0		$	0.5		$	1.4
Gross realized losses		(0.2	)		(1.3	)		(0.5	)		(1.8	)
Total	$	—		$	(0.3	)	$	—		$	(0.4	)