Income Taxes (Activity Related To Gross Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
Sep. 26, 2015	Sep. 27, 2014
Income Taxes [Abstract]
Beginning unrecognized tax benefits	$ 14	$ 14
Gross increases - tax positions in prior periods		2
Gross increases - current period tax positions	1	1
Settlements	(1)	(2)
Lapse of statute of limitations	(1)	(1)
Ending unrecognized tax benefits	$ 13	$ 14

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- Definition

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Unrecognized Tax Benefit
-URI http://asc.fasb.org/extlink&oid=6527854

+ Details

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- Definition

Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

+ References

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- Definition

Amount of increase in unrecognized tax benefits resulting from acquisitions.

+ References

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- Definition

Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

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- Definition

Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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