Investments (Tables)

3 Months Ended

Mar. 29, 2013

Available-For-Sale Marketable Securities

At March 29, 2013, and December 28, 2012, available-for-sale marketable securities consisted of the following:

March 29, 2013	Amortized Cost		Unrealized Gain		Unrealized Loss			Fair Value
U.S. government debt obligations	$	18.5	$	—	$	—		$	18.5
Corporate debt obligations		43.0		0.1		(0.1	)		43.0
Mortgaged backed debt obligations guaranteed by GNMA		92.6		0.5		(0.2	)		92.9
Certificates of deposit guaranteed by FDIC		1.7		—		—			1.7
Foreign government debt obligations		20.4		0.1		—			20.5
Foreign corporate debt obligations guaranteed by foreign governments		24.6		0.1		—			24.7
Total	$	200.8	$	0.8	$	(0.3	)	$	201.3
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 March 29, 2013:

	Amortized Cost		Fair Value
Less than 12 months	$	64.9	$	65.1
Due in 1 to 5 years		43.3		43.3
Due after 5 years		92.6		92.9
Total	$	200.8	$	201.3

Investments in Marketable Securities with Unrealized Losses

Investments in marketable securities with unrealized losses at March 29, 2013, were as follows:

	Unrealized Loss Less than 12 months					Unrealized Loss Greater than 12 months				Total
March 29, 2013	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Corporate debt obligations	$	28.8	$	(0.1	)	$	—	$	—	$	28.8	$	(0.1	)
Mortgaged backed debt obligations guaranteed by GNMA		42.9		(0.2	)		—		—		42.9		(0.2	)
Total	$	71.7	$	(0.3	)	$	—	$	—	$	71.7	$	(0.3	)

Gross Realized Gains and Losses Related to Fixed Income Investments

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

	First Quarter
	3/29/13			3/30/12
Gross realized gains	$	1.6		$	0.3
Gross realized losses		(0.4	)		(0.3	)
Total	$	1.2		$	—