Stockholders' Equity And Stock-Based Compensation (RSU Vest Date Fair Value) (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 25, 2015	Sep. 26, 2014	Sep. 27, 2013
Stockholders' Equity And Stock-Based Compensation [Abstract]
Restricted stock units - vest date fair value	$ 45,175	$ 40,810	$ 27,013

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (d)(2)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration