Stock-Based Compensation (Schedule of Stock-Based Compensation Expense Recognized in our Condensed Consolidated Statements of Income) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 29, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 113	$ 147
Income tax benefit for stock-based compensation expense	(26)	(51)
Cost of revenues
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	5	6
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	31	43
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	39	41
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 38	$ 57