Goodwill And Acquisition-Related Intangibles, Net (Tables)

9 Months Ended

Dec. 31, 2015

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 nine months ended December 31, 2015 are as follows (in millions):

	As of March 31, 2015			Activity		Effects of Foreign Currency Translation			As of December 31, 2015
Goodwill	$	2,081		$	—	$	(5	)	$	2,076
Accumulated impairment	(368		)	—		—			(368		)
Total	$	1,713		$	—	$	(5	)	$	1,708

Schedule Of Acquisition-Related Intangibles

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

	As of December 31, 2015							As of March 31, 2015
	Gross Carrying Amount		Accumulated Amortization			Acquisition- Related Intangibles, Net		Gross Carrying Amount		Accumulated Amortization			Acquisition- Related Intangibles, Net
Developed and core technology	$	531	$	(474	)	$	57	$	531	$	(439	)	$	92
Trade names and trademarks	130		(116		)	14		130		(111		)	19
Registered user base and other intangibles	87		(87		)	—		87		(87		)	—
Carrier contracts and related	85		(85		)	—		85		(85		)	—
Total	$	833	$	(762	)	$	71	$	833	$	(722	)	$	111

Schedule Of Amoritization Of Intangibles

Amortization of intangibles for the three and nine months ended December 31, 2015 and 2014 are classified in the Condensed Consolidated Statement of Operations as follows (in millions):

	Three Months Ended December 31,				Nine Months Ended December 31,
	2015		2014		2015		2014
Cost of service and other	$	9	$	8	$	25	$	27
Cost of product	3		4		10		11
Operating expenses	2		4		6		11
Total	$	14	$	16	$	41	$	49

Schedule Of Future Amortization Of Acquisition-Related Intangibles

As of December 31, 2015, 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,
2016 (remaining three months)	$	15
2017	37
2018	17
2019	2
2020	—
2021	—
Total	$	71