Subsequent Events (Details)						3 Months Ended		6 Months Ended
	Nov. 07, 2019 $ / shares	Nov. 05, 2019 USD ($) employees	Nov. 04, 2019 USD ($)	Nov. 04, 2019 USD ($)	Oct. 16, 2019 USD ($)	Oct. 04, 2019 $ / shares	Sep. 28, 2018 $ / shares	Oct. 04, 2019 $ / shares	Sep. 28, 2018 $ / shares	Aug. 08, 2019 USD ($)
Subsequent Event [Line Items]
Cash dividend (in dollars per share) | $ / shares						$ 0.075	$ 0.075	$ 0.15	$ 0.150
Subsequent Event
Subsequent Event [Line Items]
Principal quarterly installment payment as percentage of aggregate principal amount			1.25%	1.25%
Subsequent Event | November 2019 Plan
Subsequent Event [Line Items]
Reduction of workforce, number of employees | employees		3,100
Expected cost of restructuring		$ 800,000,000
Restructuring completion period		12 months
Subsequent Event | Employee Severance | November 2019 Plan
Subsequent Event [Line Items]
Expected cost of restructuring		$ 350,000,000
Common Stock | Subsequent Event
Subsequent Event [Line Items]
Cash dividend (in dollars per share) | $ / shares	$ 0.125
Revolving Credit Facility | Subsequent Event
Subsequent Event [Line Items]
Maximum borrowing capacity, revolving line of credit			$ 1,000,000,000	$ 1,000,000,000
Revolving Credit Facility | Minimum | Subsequent Event
Subsequent Event [Line Items]
Line of credit facility, commitment fee percentage				0.125%
Debt covenant, aggregate acquisition amount benchmark			$ 250,000,000	$ 250,000,000
Revolving Credit Facility | Maximum | Subsequent Event
Subsequent Event [Line Items]
Line of credit facility, commitment fee percentage				0.30%
Debt covenant, consolidated leverage ratio			5.25	5.25
Debt covenant, consolidated leverage ratio if acquisition incurred			5.75	5.75
Revolving Credit Facility | Base Rate | Minimum | Subsequent Event
Subsequent Event [Line Items]
Debt instrument, basis spread on variable rate			0.75%
Revolving Credit Facility | Base Rate | Maximum | Subsequent Event
Subsequent Event [Line Items]
Debt instrument, basis spread on variable rate			0.125%
Revolving Credit Facility | LIBOR | Minimum | Subsequent Event
Subsequent Event [Line Items]
Debt instrument, basis spread on variable rate			1.75%
Revolving Credit Facility | LIBOR | Maximum | Subsequent Event
Subsequent Event [Line Items]
Debt instrument, basis spread on variable rate			1.125%
5-year term loan | Subsequent Event
Subsequent Event [Line Items]
Debt instrument term				5 years
Debt face amount			$ 500,000,000	$ 500,000,000
Delayed 5-year term loan | Subsequent Event
Subsequent Event [Line Items]
Debt instrument term				5 years
Debt face amount			750,000,000	$ 750,000,000
Enterprise Security | Discontinued Operations, Disposed of by Sale
Subsequent Event [Line Items]
Consideration from sale of discontinued operations										$ 10,700,000,000
Enterprise Security | Discontinued Operations, Disposed of by Sale | Subsequent Event
Subsequent Event [Line Items]
Consideration from sale of discontinued operations			$ 10,700,000,000	$ 10,700,000,000
Transition services agreement, term				6 months
Enterprise Security | Discontinued Operations, Disposed of by Sale | Minimum | Subsequent Event
Subsequent Event [Line Items]
Anticipated cost associated with disposal of discontinued operations				$ 35,000,000
Taxes payment associated with disposal of discontinued operations				2,200,000,000
Expected gain on disposal of discontinued operation				2,000,000,000
Enterprise Security | Discontinued Operations, Disposed of by Sale | Maximum | Subsequent Event
Subsequent Event [Line Items]
Anticipated cost associated with disposal of discontinued operations				40,000,000
Taxes payment associated with disposal of discontinued operations				2,600,000,000
Expected gain on disposal of discontinued operation				$ 3,000,000,000
DigiCert | Subsequent Event
Subsequent Event [Line Items]
Proceeds from sale of equity method investments					$ 378,000,000
Expected income tax payments from sale of equity method investments					55,000,000
DigiCert | Minimum | Subsequent Event
Subsequent Event [Line Items]
Expected gain from sale of equity method investment					310,000,000
DigiCert | Maximum | Subsequent Event
Subsequent Event [Line Items]
Expected gain from sale of equity method investment					$ 320,000,000