Supplemental Financial Information (Schedule Of Accumulated Other Comprehensive Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jan. 02, 2015	Dec. 27, 2013	Jan. 02, 2015		Dec. 27, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance as of March 28, 2014			$ 194	[1]
Other comprehensive income before reclassifications			(75)
Amounts reclassified from accumulated other comprehensive income			0
Balance as of January 2, 2015	119		119
Net income	222	283	702		681
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance as of March 28, 2014			191
Other comprehensive income before reclassifications			(75)
Amounts reclassified from accumulated other comprehensive income			0
Balance as of January 2, 2015	116		116
Unrealized Gain On Available-For-Sale Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance as of March 28, 2014			3
Other comprehensive income before reclassifications			0
Amounts reclassified from accumulated other comprehensive income			0
Balance as of January 2, 2015	3		3
Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Net income	$ 0		$ 0

[1] Derived from audited financial statements.