The following tables provide a summary of assets and liabilities measured at fair value on a recurring basis and as reported in the Condensed Consolidated Balance Sheets (in millions):



	Fair Value Measurements at June 30, 2016 Using:
	Quoted Prices in Active Markets For Identical Assets		Significant Other Observable Remaining Inputs			Significant Other Unobservable Remaining Inputs
	(Level 1)		(Level 2)			(Level 3)		Total
Assets measured at fair value:
Available-for-sale securities:
Asset-backed securities	$	—	$	320.7		$	—	$	320.7
Certificates of deposit	—		19.4			—		19.4
Commercial paper	—		6.7			—		6.7
Corporate debt securities	—		863.7			—		863.7
Foreign government debt securities	—		35.5			—		35.5
Government-sponsored enterprise obligations	—		177.2			—		177.2
Money market funds⁽¹⁾	538.7		—			—		538.7
Mutual funds⁽²⁾	5.8		—			—		5.8
Publicly-traded equity securities	4.5		—			—		4.5
U.S. government securities	295.5		71.2			—		366.7
Total available-for-sale securities	844.5		1,494.4			—		2,338.9
Trading securities in mutual funds⁽³⁾	19.3		—			—		19.3
Privately-held debt and redeemable preferred stock securities	—		—			51.4		51.4
Derivative assets:
Foreign exchange contracts	—		2.8			—		2.8
Total assets measured at fair value	$	863.8	$	1,497.2		$	51.4	$	2,412.4
Liabilities measured at fair value:
Derivative liabilities:
Foreign exchange contracts	$	—	$	(0.3	)	$	—	$	(0.3	)
Total liabilities measured at fair value	$	—	$	(0.3	)	$	—	$	(0.3	)

Total assets measured at fair value, reported as:
Cash equivalents	$	495.0	$	60.2		$	—	$	555.2
Restricted investments	68.8		—			—		68.8
Short-term investments	122.4		464.7			—		587.1
Long-term investments	177.6		969.5			—		1,147.1
Prepaid expenses and other current assets	—		2.8			—		2.8
Other long-term assets	—		—			51.4		51.4
Total assets measured at fair value	$	863.8	$	1,497.2		$	51.4	$	2,412.4

Total liabilities measured at fair value, reported as:
Other accrued liabilities	$	—	$	(0.3	)	$	—	$	(0.3	)
Total liabilities measured at fair value	$	—	$	(0.3	)	$	—	$	(0.3	)

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⁽¹⁾	Balance includes $43.7 million of restricted investments measured at fair market value related to the Company's D&O Trust and acquisition-related escrows.


⁽²⁾	Balance relates to restricted investments measured at fair market value related to the Company's India Gratuity Trust.


⁽³⁾	Balance relates to restricted investments measured at fair value related to the Company's NQDC plan assets.



	Fair Value Measurements at December 31, 2015 Using:
	Quoted Prices in Active Markets For Identical Assets		Significant Other Observable Remaining Inputs			Significant Other Unobservable Remaining Inputs
	(Level 1)		(Level 2)			(Level 3)		Total
Assets measured at fair value:
Available-for-sale securities:
Asset-backed securities	$	—	$	311.7		$	—	$	311.7
Certificates of deposit	—		9.6			—		9.6
Commercial paper	—		17.7			—		17.7
Corporate debt securities	—		911.4			—		911.4
Foreign government debt securities	—		16.5			—		16.5
Government-sponsored enterprise obligations	—		203.7			—		203.7
Money market funds⁽¹⁾	29.7		—			—		29.7
Mutual funds⁽²⁾	6.2		—			—		6.2
Publicly-traded equity securities	8.8		—			—		8.8
U.S. government securities	247.3		30.3			—		277.6
Total available-for-sale securities	292.0		1,500.9			—		1,792.9
Trading securities in mutual funds⁽³⁾	17.7		—			—		17.7
Privately-held debt and redeemable preferred stock securities	—		—			60.2		60.2
Derivative assets:
Foreign exchange contracts	—		0.4			—		0.4
Total assets measured at fair value	$	309.7	$	1,501.3		$	60.2	$	1,871.2
Liabilities measured at fair value:
Derivative liabilities:
Foreign exchange contracts	$	—	$	(1.3	)	$	—	$	(1.3	)
Total liabilities measured at fair value	$	—	$	(1.3	)	$	—	$	(1.3	)

Total assets measured at fair value, reported as:
Cash equivalents	$	—	$	3.4		$	—	$	3.4
Restricted investments	35.9		—			—		35.9
Short-term investments	108.2		418.9			—		527.1
Long-term investments	165.6		1,078.6			—		1,244.2
Prepaid expenses and other current assets	—		0.4			—		0.4
Other long-term assets	—		—			60.2		60.2
Total assets measured at fair value	$	309.7	$	1,501.3		$	60.2	$	1,871.2

Total liabilities measured at fair value, reported as:
Other accrued liabilities	$	—	$	(1.3	)	$	—	$	(1.3	)
Total liabilities measured at fair value	$	—	$	(1.3	)	$	—	$	(1.3	)

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⁽¹⁾	Balance includes $29.7 million of restricted investments measured at fair market value related to the Company's D&O Trust and acquisition-related escrows.


⁽²⁾	Balance relates to restricted investments measured at fair market value related to the Company's India Gratuity Trust.


⁽³⁾	Balance relates to investments measured at fair value related to the Company's NQDC plan assets.