Fair Value Measurements (Schedule Of Available For Sale Securities) (Details) (USD $) In Millions	12 Months Ended
	Oct. 01, 2011		Oct. 02, 2010
Marketable securities accumulated other than temporary impairments amount	$ 3		$ 3
U.S. Treasury And Agency [Member]
Amortized Cost Basis	33		41
Fair Value	34		42
Unrealized Gain/(Loss)	1		1
Corporate And Asset-Backed [Member]
Amortized Cost Basis	54	[1]	43	[1]
Fair Value	56	[1]	46	[1]
Unrealized Gain/(Loss)	2	[1]	3	[1]
Redeemable Preferred Stock [Member]
Amortized Cost Basis	27		27
Fair Value	27		27
Unrealized Gain/(Loss)	0		0
Common Stock [Member]
Amortized Cost Basis	9		9
Fair Value	7		15
Unrealized Gain/(Loss)	(2)		6
Stock Warrants [Member]
Amortized Cost Basis	0		0
Fair Value	0		3
Unrealized Gain/(Loss)	$ 0		$ 3

[1] At October 1, 2011, and October 2, 2010, the amortized cost basis for Corporate and Asset-Backed debt securities had been reduced by accumulated other than temporary impairments of $3 million and $3 million, respectively.