Goodwill And Acquisition-Related Intangibles, Net (Tables)

12 Months Ended

Mar. 31, 2014

Mar. 31, 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 fiscal year ended March 31, 2014 are as follows (in millions):

	As of March 31, 2013			Activity		Effects of Foreign Currency Translation			As of March 31, 2014
Goodwill	$	2,089		$	5	$	(3	)	$	2,091
Accumulated impairment	(368		)	—		—			(368		)
Total	$	1,721		$	5	$	(3	)	$	1,723

The changes in the carrying amount of goodwill for the fiscal year ended March 31, 2013 are as follows (in millions):

	As of March 31, 2012			Activity		Effects of Foreign Currency Translation		As of March 31, 2013
Goodwill	$	2,086		$	3	$	—	$	2,089
Accumulated impairment	(368		)	—		—		(368		)
Total	$	1,718		$	3	$	—	$	1,721

Schedule Of Acquisition-Related Intangibles

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

	As of March 31, 2014							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	$	(385	)	$	146	$	527	$	(324	)	$	203
Trade names and trademarks	130		(105		)	25		130		(99		)	31
Registered user base and other intangibles	87		(87		)	—		87		(84		)	3
Carrier contracts and related	85		(79		)	6		85		(73		)	12
In-process research and development	—		—			—		4		—			4
Total	$	833	$	(656	)	$	177	$	833	$	(580	)	$	253

Schedule Of Amortization Of Intangible Assets

Amortization of intangibles and impairment charges recognized for our acquisition-related intangible assets for the fiscal years ended March 31, 2014, 2013 and 2012 are classified in the Consolidated Statement of Operations as follows (in millions):

	Year Ended March 31,
	2014		2013		2012
Cost of product	$	33	$	55	$	35
Cost of service and other	27		38		17
Operating expenses	16		30		43
Total	$	76	$	123	$	95

Schedule Of Future Amortization Of Acquisition-Related Intangibles

As of March 31, 2014, future amortization of acquisition-related intangibles that will be recorded in the Consolidated Statement of Operations is estimated as follows (in millions):

Fiscal Year Ending March 31,
2015	$	65
2016	53
2017	32
2018	12
2019	8
Thereafter	7
Total	$	177