Description Of Business and Basis Of Presentation (New Accounting Pronouncements) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Jun. 29, 2018	Dec. 29, 2017	Jun. 29, 2018
Accounting Changes and Error Corrections [Abstract]
Employee service share-based compensation, tax benefit from compensation expense	$ 1.1		$ 23.6
New accounting pronouncement or change in accounting principle, effect of adoption, quantification			$ 23.6
New accounting pronouncement or change in accounting principle, description of prior-period information retrospectively adjusted		1.9

No definition available.

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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

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- Definition

Description of the prior-period information that has been retrospectively adjusted when a new accounting pronouncement or a change in accounting principle is adopted.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22499-107794

+ Details

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- Definition

Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements.

+ References

No definition available.

+ Details

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