Goodwill And Acquisition-Related Intangibles, Net (Tables)

6 Months Ended

Sep. 30, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule Of Changes In The Carrying Amount Of Goodwill

The changes in the carrying amount of goodwill for the six months ended September 30, 2013 are as follows (in millions):

	As of March 31, 2013			Activity		Effects of Foreign Currency Translation		As of September 30, 2013
Goodwill	$	2,089		$	5	$	—	$	2,094
Accumulated impairment	(368		)	—		—		(368		)
Total	$	1,721		$	5	$	—	$	1,726

Schedule Of Acquisition-Related Intangibles

Acquisition-related intangibles consisted of the following (in millions):

	As of September 30, 2013							As of March 31, 2013
	Gross Carrying Amount		Accumulated Amortization			Acquisition- Related Intangibles, Net		Gross Carrying Amount		Accumulated Amortization			Acquisition- Related Intangibles, Net
Developed and core technology	$	531	$	(354	)	$	177	$	527	$	(324	)	$	203
Trade names and trademarks	130		(102		)	28		130		(99		)	31
Registered user base and other intangibles	87		(86		)	1		87		(84		)	3
Carrier contracts and related	85		(75		)	10		85		(73		)	12
In-process research and development	—		—			—		4		—			4
Total	$	833	$	(617	)	$	216	$	833	$	(580	)	$	253

Schedule Of Amoritization Of Intangibles

Amortization of intangibles for the three and six months ended September 30, 2013 and 2012 are classified in the Condensed Consolidated Statement of Operations as follows (in millions):

	Three Months Ended September 30,				Six Months Ended September 30,
	2013		2012		2013		2012
Cost of product	$	8	$	8	$	17	$	17
Cost of service and other	6		6		12		12
Operating expenses	4		7		8		14
Total	$	18	$	21	$	37	$	43

Schedule Of Future Amortization Of Acquisition-Related Intangibles

As of September 30, 2013, future amortization of acquisition-related intangibles that will be recorded in the Condensed Consolidated Statement of Operations is estimated as follows (in millions):

Fiscal Year Ending March 31,
2014 (remaining six months)	$	37
2015	66
2016	53
2017	32
2018	13
2019	8
Thereafter	7
Total	$	216