Accumulated Other Comprehensive Income (Tables)

6 Months Ended

Sep. 30, 2016

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, 2016 and 2015 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, 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	)

	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, 2015	$	(4	)	$	5		$	(15	)	$	(14	)
Other comprehensive income (loss) before reclassifications	2			5			(32		)	(25		)
Amounts reclassified from accumulated other comprehensive income (loss)	(1		)	(4		)	—			(5		)
Total other comprehensive income (loss), net of tax	1			1			(32		)	(30		)
Balance as of September 30, 2015	$	(3	)	$	6		$	(47	)	$	(44	)

The changes in accumulated other comprehensive income (loss) by component, net of tax, for the six months ended September 30, 2016 and 2015 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, 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	)

	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, 2015	$	(3	)	$	21		$	(16	)	$	2
Other comprehensive income (loss) before reclassifications	1			(8		)	(31		)	(38		)
Amounts reclassified from accumulated other comprehensive income (loss)	(1		)	(7		)	—			(8		)
Total other comprehensive income (loss), net of tax	—			(15		)	(31		)	(46		)
Balance as of September 30, 2015	$	(3	)	$	6		$	(47	)	$	(44	)

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, 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	)
Net of tax	$	(1	)	$	(1	)
(Gains) losses on cash flow hedges from forward contracts
Net revenue	$	(4	)	$	(9	)
Research and development	—			(1		)
Net of tax	$	(4	)	$	(10	)
Total (gain) loss reclassified, net of tax	$	(5	)	$	(11	)

The effects on net income of amounts reclassified from accumulated other comprehensive income (loss) for the three and six months ended September 30, 2015 were as follows (in millions):

	Amount Reclassified From Accumulated Other Comprehensive Income (Loss)
Statement of Operations Classification	Three Months Ended September 30, 2015			Six Months Ended September 30, 2015
(Gains) losses on available-for-sale securities
Interest and other income (expense), net	$	(1	)	$	(1	)
Net of tax	$	(1	)	$	(1	)
(Gains) losses on cash flow hedges from forward contracts
Net revenue	$	(6	)	$	(14	)
Research and development	2			7
Net of tax	$	(4	)	$	(7	)
Total (gain) loss reclassified, net of tax	$	(5	)	$	(8	)