Goodwill and Intangible Assets (Tables)

6 Months Ended

Sep. 29, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes in the Carrying Amount of Goodwill by Segment

The changes in the carrying amount of goodwill by segment are as follows:

(In millions)	Enterprise Security			Consumer Digital Safety		Total
Net balance as of March 31, 2017	$	6,078		$	2,549	$	8,627
Acquisitions	259			15		274
Held for sale	(606		)	—		(606		)
Translation and other adjustments	6			—		6
Net balance as of September 29, 2017	$	5,737		$	2,564	$	8,301

Schedule of Intangible Assets, Net, Finite-Lived

	September 29, 2017							March 31, 2017
(In millions)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Customer relationships	$	1,463	$	(256	)	$	1,207	$	1,646	$	(322	)	$	1,324
Developed technology	1,032		(268		)	764		1,006		(229		)	777
Finite-lived trade names and other	10		(5		)	5		46		(26		)	20
Total finite-lived intangible assets	2,505		(529		)	1,976		2,698		(577		)	2,121
Indefinite-lived trade names	852		—			852		864		—			864
In-process research and development	19		—			19		19		—			19
Total intangible assets	$	3,376	$	(529	)	$	2,847	$	3,581	$	(577	)	$	3,004

Schedule of Intangible Assets, Net, Indefinite-Lived

	September 29, 2017							March 31, 2017
(In millions)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Customer relationships	$	1,463	$	(256	)	$	1,207	$	1,646	$	(322	)	$	1,324
Developed technology	1,032		(268		)	764		1,006		(229		)	777
Finite-lived trade names and other	10		(5		)	5		46		(26		)	20
Total finite-lived intangible assets	2,505		(529		)	1,976		2,698		(577		)	2,121
Indefinite-lived trade names	852		—			852		864		—			864
In-process research and development	19		—			19		19		—			19
Total intangible assets	$	3,376	$	(529	)	$	2,847	$	3,581	$	(577	)	$	3,004

Amortization Expense

Amortization expense for purchased intangible assets is summarized below:

	Three Months Ended				Six Months Ended				Statements of Operations Classification
(In millions)	September 29, 2017		September 30, 2016		September 29, 2017		September 30, 2016
Customer relationships and other	$	55	$	34	$	114	$	48	Operating expenses
Developed technology	61		35		116		41		Cost of revenues
Total	$	116	$	69	$	230	$	89

Schedule of Future Intangible Asset Amortization Expense

As of September 29, 2017, future amortization expense related to intangible assets that have finite lives is as follows by fiscal year:

(In millions)	September 29, 2017
Remainder of 2018	$	220
2019	430
2020	425
2021	318
2022	259
Thereafter	324
Total	$	1,976