Retirement Plan (Schedule Of Plan Asset Fair Values) (Details) (USD $) In Millions, unless otherwise specified	Sep. 28, 2013	Sep. 29, 2012
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 141	$ 129
Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5	4
U.S. Large Cap Comingled Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	46	40
U.S. Mid Cap Equity Mutual Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	15	13
U.S. Small Cap Equity Mutual Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	8	7
International Equity Mutual Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	12	13
Real Estate Equity Investment Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4	4
Corporate Bond Mutual Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	33	22
Corporate Bond [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	8	15
Guaranteed Investment Account [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	10	11
Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	77	63
Level 1 [Member] | Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5	4
Level 1 [Member] | U.S. Mid Cap Equity Mutual Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	15	13
Level 1 [Member] | U.S. Small Cap Equity Mutual Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	8	7
Level 1 [Member] | International Equity Mutual Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	12	13
Level 1 [Member] | Real Estate Equity Investment Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4	4
Level 1 [Member] | Corporate Bond Mutual Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	33	22
Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	54	55
Level 2 [Member] | U.S. Large Cap Comingled Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	46	40
Level 2 [Member] | Corporate Bond [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	8	15
Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	10	11
Level 3 [Member] | Guaranteed Investment Account [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 10	$ 11