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	Sep. 28, 2012		Mar. 30, 2012
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	$ 2,875	[1]	$ 1,483	[1]
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents		[1]		[1]
Total [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	$ 2,875	[1]	$ 1,483	[1]

[1] Cash equivalents consist of money market funds which are valued based on quoted market prices of the identical underlying security