Recent Accounting Standards (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 28, 2018	Dec. 29, 2017	Dec. 28, 2018	Dec. 29, 2017	Mar. 31, 2018	Mar. 30, 2018	[1]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net revenues	$ 1,211	$ 1,209	$ 3,542	$ 3,624
Operating expenses	776	$ 864	2,498	$ 2,813
Retained earnings	1,116		1,116		$ 1,267	$ 328
Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Retained earnings					197
Accounting Standards Update 2016-16
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Retained earnings					$ 742
Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net revenues	17		26
Operating expenses	1		(10)
Retained earnings	232		232
Calculated under Revenue Guidance in Effect before Topic 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Retained earnings	$ 884		$ 884

[1] Derived from audited financial statements.