Employee Equity Incentive Plans (Schedule of Stock-based Compensation Expense from Modifications) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jan. 01, 2021	Jan. 03, 2020	Jan. 01, 2021	Jan. 03, 2020
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	$ 7	$ 120	$ 28	$ 120
Discontinued operations
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	0	97	0	97
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	0	5	2	5
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	4	0	9	0
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	2	12	8	12
Restructuring and other costs
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	$ 1	$ 6	$ 9	$ 6