Condensed Consolidated Statements Of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Jan. 02, 2015	Dec. 27, 2013	Jan. 02, 2015	Dec. 27, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 222us-gaap_NetIncomeLoss	$ 283us-gaap_NetIncomeLoss	$ 702us-gaap_NetIncomeLoss	$ 681us-gaap_NetIncomeLoss
Other comprehensive loss, net of taxes:
Foreign currency translation adjustments	(35)	(1)	(75)	(5)
Available-for-sale securities:
Unrealized gain on available-for-sale securities, net of taxes of $0 million for the three months ended January 2, 2015 and December 27, 2013, and $0 million for the nine months ended January 2, 2015 and December 27, 2013	0	0	0	0
Reclassification adjustments for realized gain included in net income, net of taxes of $0 million for the three months ended January 2, 2015 and December 27, 2013, and $0 million and $10 million for the nine months ended January 2, 2015 and December 27, 2013, respectively	0	0	0	(14)
Net change in unrealized loss on available-for-sale securities	0	0	0	(14)
Other comprehensive loss, net of taxes	(35)	(1)	(75)	(19)
Comprehensive income	$ 187us-gaap_ComprehensiveIncomeNetOfTax	$ 282us-gaap_ComprehensiveIncomeNetOfTax	$ 627us-gaap_ComprehensiveIncomeNetOfTax	$ 662us-gaap_ComprehensiveIncomeNetOfTax

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