FINANCIAL INSTRUMENTS (Tables)

9 Months Ended

Sep. 30, 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 September 30, 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
September 30, 2014
Cash	$	192.9	$	—	$	—		$	192.9	$	192.9	$	—	$	—
Level 1:
Money market funds	248.5		—		—			248.5		248.5		—		—
U.S. Treasuries & corporate equity securities	69.4		—		(1.4		)	68.0		—		34.0		34.0
Subtotal	317.9		—		(1.4		)	316.5		248.5		34.0		34.0
Level 2:
Commercial paper	115.7		—		—			115.7		49.8		65.9		—
Corporate securities	816.9		1.6		(1.5		)	817.0		0.6		168.9		647.5
U.S. government agencies	411.1		0.3		(0.7		)	410.7		1.2		44.1		365.4
Non-U.S. government securities	36.7		0.1		(0.1		)	36.7		—		26.2		10.5
Municipal securities	372.0		1.2		—			373.2		—		182.2		191.0
Subtotal	1,752.4		3.2		(2.3		)	1,753.3		51.6		487.3		1,214.4
Total assets measured at fair value	$	2,263.2	$	3.2	$	(3.7	)	$	2,262.7	$	493.0	$	521.3	$	1,248.4

	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 September 30, 2014 (in millions):

	Amortized Cost		Fair Value
Mature in less than one year	$	565.8	$	566.8
Mature in one to five years	1,248.6		1,248.4
Mature after five years	—		—
Total	$	1,814.4	$	1,815.2

Gross Notional Amounts for Derivatives and Aggregate Gross Fair Value Outstanding

The notional amounts for derivative instruments provide one measure of the transaction volume. Total gross notional amounts (in USD) for derivatives and aggregate gross fair value outstanding at the end of each period were as follows (in millions):

	Derivatives Designated as Hedging Instruments				Derivatives Not Designated as Hedging Instruments
	September 30, 2014		December 31, 2013		September 30, 2014		December 31, 2013
Notional amounts:
Forward contracts	$	72.4	$	85.6	$	71.7	$	119.6
Gross fair value recorded in:
Prepaid and other current assets	$	4.6	$	—	$	3.1	$	—
Other accrued liabilities	$	—	$	—	$	—	$	3.8