Stockholders' Equity (Schedule of Accumulated Other Comprehensive Income) (Details) $ in Millions	6 Months Ended
	Oct. 02, 2015 USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance as of April 3, 2015	$ 5,935	[1]
Balance as of October 2, 2015	5,892
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance as of April 3, 2015	101
Other comprehensive income before reclassifications	(22)
Loss reclassified from accumulated other comprehensive income	1
Balance as of October 2, 2015	80
Unrealized Gain On Available-For-Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance as of April 3, 2015	3
Other comprehensive income before reclassifications	5
Loss reclassified from accumulated other comprehensive income	0
Balance as of October 2, 2015	8
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance as of April 3, 2015	104
Other comprehensive income before reclassifications	(17)
Loss reclassified from accumulated other comprehensive income	1
Balance as of October 2, 2015	$ 88

[1] Derived from audited financial statements.