Derivative Financial Instruments (Tables)

9 Months Ended

Dec. 31, 2016

Derivative Financial Instruments [Abstract]

Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]

Total gross notional amounts and fair values for currency derivatives with cash flow hedge accounting designation are as follows (in millions):

	As of December 31, 2016						As of March 31, 2016
	Notional Amount		Fair Value				Notional Amount		Fair Value
			Asset		Liability				Asset		Liability
Forward contracts to purchase	$	177	$	—	$	8	$	148	$	5	$	1
Forward contracts to sell	$	700	$	44	$	1	$	685	$	11	$	9

Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]

Total gross notional amounts and fair values for currency derivatives that are not designated as hedging instruments are accounted for as follows (in millions):

	As of December 31, 2016						As of March 31, 2016
	Notional Amount		Fair Value				Notional Amount		Fair Value
			Asset		Liability				Asset		Liability
Forward contracts to purchase	$	143	$	—	$	1	$	108	$	—	$	—
Forward contracts to sell	$	681	$	13	$	—	$	159	$	—	$	—

The effect of foreign currency forward contracts not designated as hedging instruments in our Condensed Consolidated Statements of Operations for the three and nine months ended December 31, 2016 and 2015, was as follows (in millions):

	Statement of Operations Classification	Amount of Gain (Loss) Recognized in the Statement of Operations
		Three Months Ended December 31,				Nine Months Ended December 31,
		2016		2015		2016		2015
Foreign currency forward contracts not designated as hedging instruments	Interest and other income (expense), net	$	49	$	13	$	50	$	15