Goodwill (Tables)

12 Months Ended

Mar. 31, 2021

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, 2021 are as follows (in millions):

	As of March 31, 2020		Activity		Effects of Foreign Currency Translation		As of March 31, 2021
Goodwill	$	2,253	$	984	$	(1)	$	3,236
Accumulated impairment	(368)		—		—		(368)
Total	$	1,885	$	984	$	(1)	$	2,868

The changes in the carrying amount of goodwill for the fiscal year ended March 31, 2020 are as follows (in millions):

	As of March 31, 2019		Activity		Effects of Foreign Currency Translation		As of March 31, 2020
Goodwill	$	2,260	$	—	$	(7)	$	2,253
Accumulated impairment	(368)		—		—		(368)
Total	$	1,892	$	—	$	(7)	$	1,885

Schedule Of Acquisition-Related Intangibles

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

	As of March 31, 2021						As of March 31, 2020
	Gross Carrying Amount		Accumulated Amortization		Acquisition- Related Intangibles, Net		Gross Carrying Amount		Accumulated Amortization		Acquisition- Related Intangibles, Net
Developed and core technology	$	691	$	(472)	$	219	$	474	$	(450)	$	24
Trade names and trademarks	188		(144)		44		161		(132)		29
Registered user base and other intangibles	5		(5)		—		5		(5)		—
Carrier contracts and related	85		(85)		—		85		(85)		—
In-process research and development	46		—		46		—		—		—
Total	$	1,015	$	(706)	$	309	$	725	$	(672)	$	53

Schedule Of Amortization Of Intangible Assets

Amortization of intangibles for the fiscal years ended March 31, 2021, 2020 and 2019 are classified in the Consolidated Statements of Operations as follows (in millions):

	Year Ended March 31,
	2021		2020		2019
Cost of revenue	$	4	$	12	$	4
Operating expenses	30		22		23
Total	$	34	$	34	$	27

Schedule Of Future Amortization Of Acquisition-Related Intangibles

As of March 31, 2021, future amortization of finite-lived acquisition-related intangibles that will be recorded in the Consolidated Statements of Operations is estimated as follows (in millions):

Fiscal Year Ending March 31,
2022	$	113
2023	95
2024	54
2025	26
2026 and thereafter	21
Total	$	309