Fair Value Measurements (Schedule Of The Carrying Value Of Assets Measured At Fair Value On A Recurring Basis) (Details) (USD $) In Millions, unless otherwise specified	Mar. 29, 2013		Mar. 30, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$ 3,469	[1]	$ 1,483	[1]
Marketable equity securities	62		5
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	3,469	[1]	1,483	[1]
Marketable equity securities	$ 62		$ 5

[1] Cash equivalents consist of investments with remaining maturities of three months or less at the date of purchase, or money market funds for which the carrying amount is a reasonable estimate of fair value.