Investments (Tables)

6 Months Ended

Jun. 28, 2013

Available-For-Sale Marketable Securities

At June 28, 2013, and December 28, 2012, available-for-sale marketable securities consisted of the following:

June 28, 2013	Amortized Cost		Unrealized Gain		Unrealized Loss			Fair Value
U.S. government debt obligations	$	52.8	$	—	$	(0.8	)	$	52.0
Corporate debt obligations		58.2		—		(0.5	)		57.7
Mortgaged backed debt obligations guaranteed by GNMA		105.4		0.2		(1.5	)		104.1
Certificates of deposit guaranteed by FDIC		1.2		—		—			1.2
Foreign government debt obligations		26.4		—		—			26.4
Foreign corporate debt obligations guaranteed by foreign governments		33.0		0.1		—			33.1
Total	$	277.0	$	0.3	$	(2.8	)	$	274.5
December 28, 2012
U.S. government debt obligations	$	31.1	$	—	$	—		$	31.1
Corporate debt obligations		9.5		0.1		—			9.6
Mortgaged backed debt obligations guaranteed by GNMA		54.9		0.6		—			55.5
Certificates of deposit guaranteed by FDIC		1.2		—		—			1.2
Foreign government debt obligations		159.3		1.8		—			161.1
Foreign corporate debt obligations guaranteed by foreign governments		121.5		0.7		—			122.2
Total	$	377.5	$	3.2	$	—		$	380.7

Maturities of Available-For-Sale Marketable Securities

The following table summarizes the maturities of our available-for-sale marketable securities at June 28, 2013:

	Amortized Cost		Fair Value
Less than 12 months	$	65.3	$	65.4
Due in 1 to 5 years		106.4		105.0
Due after 5 years		105.3		104.1
Total	$	277.0	$	274.5

Investments in Marketable Securities with Unrealized Losses

Investments in marketable securities with unrealized losses at June 28, 2013, were as follows:

	Unrealized Loss Less than 12 months					Unrealized Loss Greater than 12 months				Total
June 28, 2013	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
U.S. government debt obligations	$	41.0	$	(0.8	)	$	—	$	—	$	41.0	$	(0.8	)
Corporate debt obligations		51.6		(0.5	)		—		—		51.6		(0.5	)
Mortgaged backed debt obligations guaranteed by GNMA		82.1		(1.5	)		—		—		82.1		(1.5	)
Total	$	174.7	$	(2.8	)	$	—	$	—	$	174.7	$	(2.8	)

Gross Realized Gains and Losses Related to Fixed Income Investments

The following table presents gross realized gains and losses related to fixed income investments:

	Second Quarter						Six Months
	6/28/13			6/29/12			6/28/13			6/29/12
Gross realized gains	$	0.1		$	0.2		$	1.7		$	0.5
Gross realized losses		(0.3	)		(0.2	)		(0.7	)		(0.5	)
Total	$	(0.2	)	$	—		$	1.0		$	—