Business Combinations - Narrative (Details)					3 Months Ended	12 Months Ended
	Sep. 12, 2022 USD ($) shares	Sep. 15, 2021 USD ($)	Aug. 10, 2021 $ / shares	Jan. 08, 2021 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2023 USD ($)	Apr. 01, 2022 USD ($)	Apr. 02, 2021 USD ($)
Asset Acquisition [Line Items]
Cash payments, net of cash acquired						$ 6,547,000,000	$ 39,000,000	$ 344,000,000
Measurement period adjustments, goodwill						84,000,000	(7,000,000)
Goodwill					$ 10,217,000,000	10,217,000,000	2,873,000,000	2,867,000,000
Net revenues						3,338,000,000	2,796,000,000	$ 2,551,000,000
Avast plc
Asset Acquisition [Line Items]
Cash consideration paid	$ 6,910,000,000
Issuance of shares (in shares) | shares	94,201,223
Business acquisition, ownership percentage	14.00%
Business combination, outstanding amount	$ 2,141,000,000
Cash payments, net of cash acquired	8,688,000,000
Measurement period adjustments, goodwill					84,000,000
Increase in long-term deferred tax liabilities					$ 88,000,000
Goodwill	7,349,000,000
Ticking fees						31,000,000
Net revenues						518,000,000
Acquisition related costs (up to)						$ 77,000,000	$ 35,000,000
Cash consideration	9,051,000,000
Cash acquired	$ 363,000,000
Avast plc | Secured Overnight Financing Rate (SOFR)
Asset Acquisition [Line Items]
Basis spread on variable rate	100.00%
Avast plc | Term Loan B | Secured Overnight Financing Rate (SOFR)
Asset Acquisition [Line Items]
Basis spread on variable rate	50.00%
Avast plc | Revolving Credit Facility | Amended and Restated Credit Agreement
Asset Acquisition [Line Items]
Principal amount	$ 1,500,000,000
Avast plc | Term Loan Interim Facility A | Amended and Restated Credit Agreement
Asset Acquisition [Line Items]
Principal amount	3,910,000,000
Avast plc | Term Loan Interim Facility B | Amended and Restated Credit Agreement
Asset Acquisition [Line Items]
Principal amount	3,690,000,000
Avast plc | Bridge Loan | Amended and Restated Credit Agreement
Asset Acquisition [Line Items]
Principal amount	750,000,000
Avast plc | Senior Credit Facility
Asset Acquisition [Line Items]
Debt issuance costs	145,000,000
Capitalized reduction to outstanding debt	132,000,000
Write off of deferred debt issuance cost	3,000,000
Avast plc | Senior Credit Facility | Other Noncurrent Assets
Asset Acquisition [Line Items]
Debt issuance costs incurred	$ 10,000,000
Avast plc | Cash Option
Asset Acquisition [Line Items]
Merger share price (in dollars per share) | $ / shares			$ 7.61
Share of our stock			0.0302
Avast plc | Equity Option
Asset Acquisition [Line Items]
Merger share price (in dollars per share) | $ / shares			$ 2.37
Share of our stock			0.1937
Fiscal Acquisition 2022
Asset Acquisition [Line Items]
Cash consideration		$ 39,000,000
Cash acquired		$ 1,000,000
Business acquisition, period results included in combined entity		1 year
Avira
Asset Acquisition [Line Items]
Cash payments, net of cash acquired				$ 344,000,000
Goodwill				261,000,000
Cash acquired				$ 32,000,000
Purchase price allocation measurement period				1 year