FINANCIAL INSTRUMENTS (Tables)

3 Months Ended

Mar. 31, 2014

Investments, All Other Investments [Abstract]

Summary of Cash and Available-For-Sale Securities

The following tables summarize the amortized cost, gross unrealized gains, gross unrealized losses, and fair value of the Company’s cash and available-for-sale securities by investment category that are recorded as cash and cash equivalents, or short-term or long-term investments as of March 31, 2014, and December 31, 2013 (in millions):

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash and Cash Equivalents		Short- term Investments		Long- term Investments
March 31, 2014
Cash	$	210.5	$	—	$	—		$	210.5	$	210.5	$	—	$	—
Level 1:
Money market funds	522.5		—		—			522.5		522.5		—		—
U.S. Treasuries	129.8		—		(0.3		)	129.5		—		77.6		51.9
Subtotal	652.3		—		(0.3		)	652.0		522.5		77.6		51.9
Level 2:
Commercial paper	171.8		—		—			171.8		75.0		96.8		—
Corporate securities	920.4		2.9		(1.4		)	921.9		—		234.0		687.9
U.S. government agencies	343.3		0.6		(0.6		)	343.3		6.0		80.7		256.6
Non-U.S. government securities	70.8		0.2		—			71.0		—		40.2		30.8
Municipal securities	583.8		1.4		(0.1		)	585.1		—		216.0		369.1
Subtotal	2,090.1		5.1		(2.1		)	2,093.1		81.0		667.7		1,344.4
Level 3:
Auction rate securities	8.0		—		—			8.0		—		—		8.0
Subtotal	8.0		—		—			8.0		—		—		8.0
Total assets measured at fair value	$	2,960.9	$	5.1	$	(2.4	)	$	2,963.6	$	814.0	$	745.3	$	1,404.3

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash and Cash Equivalents		Short- term Investments		Long- term Investments
December 31, 2013
Cash	$	247.8	$	—	$	—		$	247.8	$	247.8	$	—	$	—
Level 1:
Money market funds	516.2		—		—			516.2		516.2		—		—
U.S. Treasuries & corporate equity securities	65.4		—		(0.3		)	65.1		—		25.5		39.6
Subtotal	581.6		—		(0.3		)	581.3		516.2		25.5		39.6
Level 2:
Commercial paper	100.2		—		—			100.2		18.1		82.1		—
Corporate securities	844.7		2.9		(1.9		)	845.7		—		227.7		618.0
U.S. government agencies	352.2		0.7		(0.7		)	352.2		—		84.7		267.5
Non-U.S. government securities	67.7		0.2		(0.1		)	67.8		—		41.2		26.6
Municipal securities	550.1		1.5		(0.1		)	551.5		—		160.2		391.3
Subtotal	1,914.9		5.3		(2.8		)	1,917.4		18.1		595.9		1,303.4
Level 3:
Auction rate securities	8.0		—		(0.6		)	7.4		—		—		7.4
Subtotal	8.0		—		(0.6		)	7.4		—		—		7.4
Total assets measured at fair value	$	2,752.3	$	5.3	$	(3.7	)	$	2,753.9	$	782.1	$	621.4	$	1,350.4

Summary of Contractual Maturities of Cash Equivalents and Available-For-Sale Investments

The following table summarizes the contractual maturities of the Company’s cash equivalents and available-for-sale securities (excluding cash and money market funds), at March 31, 2014 (in millions):

	Amortized Cost		Fair Value
Mature in less than one year	$	825.0	$	826.3
Mature in one to five years	1,394.9		1,396.3
Mature after five years	8.0		8.0
Total	$	2,227.9	$	2,230.6

Derivative Instruments Used to Hedge against Balance Sheet Foreign Currency Exposures

Derivative instruments used to hedge balance sheet foreign currency exposures at the end of each period were as follows (in millions):

	Three Months Ended March 31,
	2014			2013
Recognized gains (losses) in interest and other income, net	$	0.9		$	1.0
Foreign exchange gains (losses) related to re-measurement	$	(0.6	)	$	(1.4	)

Gross Notional Amounts for Outstanding Derivatives

Total gross notional amounts (in local currency) for derivatives (recorded at fair value) outstanding at the end of each period were as follows (in millions):

	March 31, 2014	December 31, 2013
European Euro	33.0	64.0
Korean Won	21,978.8	23,000.0
British Pound	10.4	7.7
Swiss Franc	1.5	—
Japanese Yen	75.0	60.0