Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2016

Investments All Other Investments [Abstract]

Schedule of Cash, Cash Equivalents and Marketable Securities

The following tables show our cash and available-for-sale securities’ amortized cost, gross unrealized gains, gross unrealized losses and fair value by significant investment category recorded as cash and cash equivalents or short and long-term marketable securities for the periods presented (in millions):

	June 30, 2016
									Cash and		Short-Term		Long-Term
	Amortized		Unrealized		Unrealized		Fair		Cash		Marketable		Marketable
	Cost		Gains		Losses		Value		Equivalents		Securities		Securities
Cash	$	740	$	-	$	-	$	740	$	740	$	-	$	-
Level 1:
Money market funds		18		-		-		18		18		-		-
Level 2:
U.S. agency securities		29		-		-		29		3		26		-
U.S. treasury securities		12		-		-		12		4		8		-
Certificates of deposit		7		-		-		7		-		7		-
Commercial paper		5		-		-		5		1		4		-
Corporate debt securities		80		-		-		80		-		42		38
Subtotal		133		-		-		133		8		87		38
Total	$	891	$	-	$	-	$	891	$	766	$	87	$	38

	December 31, 2015
									Cash and		Short-Term		Long-Term
	Amortized		Unrealized		Unrealized		Fair		Cash		Marketable		Marketable
	Cost		Gains		Losses		Value		Equivalents		Securities		Securities
Cash	$	598	$	-	$	-	$	598	$	598	$	-	$	-
Level 1:
Money market funds		11		-		-		11		11		-		-
Level 2:
U.S. agency securities		13		-		-		13		-		9		4
U.S. treasury securities		16		-		-		16		4		12		-
Certificates of deposit		5		-		-		5		-		4		1
Commercial paper		1		-		-		1		-		1		-
Corporate debt securities		54		-		-		54		1		21		32
Subtotal		89		-		-		89		5		47		37
Total	$	698	$	-	$	-	$	698	$	614	$	47	$	37

Fair Value and Notional Principal Amounts of Outstanding or Unsettled Derivative Instruments

The following table shows the fair value and notional principal amounts of our outstanding derivative instruments that are not designated as hedging instruments for the periods presented:

	Balance Sheet Caption	June 30, 2016
		Fair Value of Derivative (2)				U.S. Dollar Notional
		Asset		Liability
		(in millions)
Foreign exchange-forward contracts (1)	Prepaid expenses and other current assets	$	1	$	-	$	34

	Balance Sheet Caption	December 31, 2015
		Fair Value of Derivative (2)				U.S. Dollar Notional
		Asset		Liability
		(in millions)
Foreign exchange-forward contracts (1)	Prepaid expenses and other current assets	$	-	$	-	$	25

(1) Derivative contracts address foreign exchange fluctuations for the Euro versus the U.S. Dollar.

(2) We measure the fair value of our outstanding or unsettled derivatives using Level 2 fair value inputs, as we use a pricing model that takes into account the contract terms as well as current foreign currency exchange rates in active markets.