Investments (Tables)

9 Months Ended

Oct. 01, 2011

Investments [Abstract]

Schedule of Available-for-sale Securities

The following is a summary of the Company's available-for-sale securities as of October 1, 2011:

(in millions)	Amortized cost		Gross unrealized gains		Gross unrealized losses			Fair value (net carrying amount)
Agency Bonds	$	93.2	$	-	$	(0.1	)	$	93.1
Corporate Bonds		53.9		-		(0.1	)		53.8
Commercial Paper		14.5		-		-			14.5
U.S. Treasury Bills		0.8		-		-			0.8
Total available-for-sale securities	$	162.4	$	-	$	(0.2	)	$	162.2

The following is a summary of the Company's available-for-sale securities as of December 31, 2010:

(in millions)	Amortized cost		Gross  unrealized gains		Gross unrealized losses			Fair value (net carrying amount)
Corporate Bonds	$	44.5	$	-	$	(0.1	)	$	44.4
Agency Bonds		31.0		-		-			31.0
Commercial Paper		29.5		-		-			29.5
U.S. Treasury Bills		0.8		-		-			0.8
Total available-for-sale securities	$	105.8	$	-	$	(0.1	)	$	105.7

The net carrying value and estimated fair value of debt securities at October 1, 2011, by contractual maturity, are shown below:

(in millions)	Amortized cost		Fair value (net carrying amount)
Available-for-sale debt securities:
Due in one year or less	$	74.2	$	74.1
Due after one year through two years		88.2		88.1
Total available-for-sale debt securities	$	162.4	$	162.2

The net carrying value and estimated fair value of debt securities at December 31, 2010, by contractual maturity, are shown below:

(in millions)	Amortized cost		Fair value (net carrying amount)
Available-for-sale debt securities:
Due in one year or less	$	84.8	$	84.7
Due after one year through two years		21.0		21.0
Total available-for-sale debt securities	$	105.8	$	105.7