Accumulated Other Comprehensive Income (Tables)

6 Months Ended

Sep. 30, 2017

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Components of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The changes in accumulated other comprehensive income (loss) by component, net of tax, for the three months ended September 30, 2017 and 2016 are as follows (in millions):

	Unrealized Net Gains (Losses) on Available-for-Sale Securities			Unrealized Net Gains (Losses) on Derivative Instruments			Foreign Currency Translation Adjustments			Total
Balances as of June 30, 2017	$	(3	)	$	(24	)	$	(44	)	$	(71	)
Other comprehensive income (loss) before reclassifications	—			(29		)	32			3
Amounts reclassified from accumulated other comprehensive income (loss)	—			(5		)	—			(5		)
Total other comprehensive income (loss), net of tax	—			(34		)	32			(2		)
Balance as of September 30, 2017	$	(3	)	$	(58	)	$	(12	)	$	(73	)

	Unrealized Net Gains (Losses) on Available-for-Sale Securities			Unrealized Net Gains (Losses) on Derivative Instruments			Foreign Currency Translation Adjustments			Total
Balances as of June 30, 2016	$	3		$	36		$	(36	)	$	3
Other comprehensive income (loss) before reclassifications	(1		)	(1		)	(6		)	(8		)
Amounts reclassified from accumulated other comprehensive income (loss)	(1		)	(4		)	—			(5		)
Total other comprehensive income (loss), net of tax	(2		)	(5		)	(6		)	(13		)
Balance as of September 30, 2016	$	1		$	31		$	(42	)	$	(10	)

The changes in accumulated other comprehensive income (loss) by component, net of tax, for the six months ended September 30, 2017 and 2016 are as follows (in millions):

	Unrealized Net Gains (Losses) on Available-for-Sale Securities			Unrealized Net Gains (Losses) on Derivative Instruments			Foreign Currency Translation Adjustments			Total
Balances as of March 31, 2017	$	(3	)	$	32		$	(48	)	$	(19	)
Other comprehensive income (loss) before reclassifications	—			(68		)	46			(22		)
Amounts reclassified from accumulated other comprehensive income (loss)	—			(22		)	(10		)	(32		)
Total other comprehensive income (loss), net of tax	—			(90		)	36			(54		)
Balance as of September 30, 2017	$	(3	)	$	(58	)	$	(12	)	$	(73	)

	Unrealized Net Gains (Losses) on Available-for-Sale Securities			Unrealized Net Gains (Losses) on Derivative Instruments			Foreign Currency Translation Adjustments			Total
Balances as of March 31, 2016	$	1		$	14		$	(31	)	$	(16	)
Other comprehensive income (loss) before reclassifications	1			27			(11		)	17
Amounts reclassified from accumulated other comprehensive income (loss)	(1		)	(10		)	—			(11		)
Total other comprehensive income (loss), net of tax	—			17			(11		)	6
Balance as of September 30, 2016	$	1		$	31		$	(42	)	$	(10	)

Reclassification out of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The effects on net income of amounts reclassified from accumulated other comprehensive income (loss) for the three and six months ended September 30, 2017 were as follows (in millions):

	Amount Reclassified From Accumulated Other Comprehensive Income (Loss)
Statement of Operations Classification	Three Months Ended September 30, 2017			Six Months Ended September 30, 2017
(Gains) losses on cash flow hedges from forward contracts
Net revenue	$	(3	)	$	(22	)
Research and development	(2		)	—
Total, net of tax	$	(5	)	$	(22	)
(Gains) losses on foreign currency translation
Interest and other income (expense), net	$	—		$	(10	)
Total, net of tax	$	—		$	(10	)
Total net (gain) loss reclassified, net of tax	$	(5	)	$	(32	)

The effects on net income of amounts reclassified from accumulated other comprehensive income (loss) for the three and six months ended September 30, 2016 were as follows (in millions):

	Amount Reclassified From Accumulated Other Comprehensive Income (Loss)
Statement of Operations Classification	Three Months Ended September 30, 2016			Six Months Ended September 30, 2016
(Gains) losses on available-for-sale securities
Interest and other income (expense), net	$	(1	)	$	(1	)
Total, net of tax	$	(1	)	$	(1	)
(Gains) losses on cash flow hedges from forward contracts
Net revenue	$	(4	)	$	(9	)
Research and development	—			(1		)
Total, net of tax	$	(4	)	$	(10	)
Total net (gain) loss reclassified, net of tax	$	(5	)	$	(11	)