Goodwill and Intangible Assets (Schedule of Changes in the Carrying Amount of Goodwill) (Details) - USD ($) $ in Millions		3 Months Ended
		Jun. 29, 2018	Jun. 30, 2017
Goodwill [Roll Forward]
March 30, 2018	[1]	$ 8,319
Acquisitions		6
Translation adjustments		(3)
June 29, 2018		8,322
Net cash purchase price, acquisition		5	$ 8
Enterprise Security
Goodwill [Roll Forward]
March 30, 2018		5,734
Acquisitions		0
Translation adjustments		(2)
June 29, 2018		5,732
Consumer Digital Safety
Goodwill [Roll Forward]
March 30, 2018		2,585
Acquisitions		6
Translation adjustments		(1)
June 29, 2018		$ 2,590

[1] Derived from audited financial statements.