Summary Of Significant Accounting Policies (Schedule Of Property And Equipment By Category) (Details) (USD $) In Millions, unless otherwise specified	Mar. 29, 2013	Mar. 30, 2012
Summary of Significant Accounting Policies [Abstract]
Computer hardware and software	$ 1,820	$ 1,640
Office furniture and equipment	172	176
Buildings	530	489
Leasehold improvements	310	284
Depreciable property and equipment, gross	2,832	2,589
Less: Accumulated depreciation	(1,853)	(1,663)
Depreciable propety and equipment, net	979	926
Construction in progress	64	95
Land	79	79
Property and equipment, net	$ 1,122	$ 1,100