Purchased Intangible Assets, Net (Tables)

3 Months Ended

Jul. 31, 2015

Goodwill And Intangible Assets Disclosure [Abstract]

Purchased intangible assets, net are summarized below (in millions):

	July 31, 2015							April 24, 2015
	Gross		Accumulated			Net		Gross		Accumulated			Net
	Assets		Amortization			Assets		Assets		Amortization			Assets
Developed technology	$	304	$	(242	)	$	62	$	313	$	(225	)	$	88
Customer contracts/relationships		5		(3	)		2		5		(3	)		2
Other purchased intangibles		1		(1	)		—		3		(3	)		—
Total purchased intangible assets	$	310	$	(246	)	$	64	$	321	$	(231	)	$	90

Amortization Expense for Purchased Intangible Assets

In the three months ended July 31, 2015, we recorded a charge of $11 million to fully impair developed technology related to our fiscal 2013 acquisition of CacheIQ as a result of our discontinued use of such technology. The impairment charge is included in accumulated amortization in the table above.

Amortization expense for purchased intangible assets is summarized below (in millions):

	Three Months Ended				Statement of
	July 31, 2015		July 25, 2014		Operations Classifications
Developed technology	$	14	$	15	Cost of revenues
Customer contracts/relationships		—		—	Operating expenses
Total	$	14	$	15

Future Amortization Expense Related to Purchased Intangible Assets

As of July 31, 2015, future amortization expense related to purchased intangible assets is as follows (in millions):

Fiscal Year	Amount
Remainder of 2016	$	40
2017		10
2018		6
2019		5
2020		3
Total	$	64