Consolidated Statements Of Comprehensive Income (Loss) (Parenthetical) - USD ($)	3 Months Ended	9 Months Ended
Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Statement Of Income And Comprehensive Income [Abstract]
Hedge loss arising during the period, tax	$ 400,000	$ 200,000	$ 1,200,000	$ 0
Net hedge gain reclassified into earnings, tax	0	0	0	100,000
Foreign currency translation adjustment, tax	0	0	0	0
Unrealized gain (loss) on marketable securities, tax	0	0	0	0
Amortization of net actuarial pension gain included in net income, tax	$ 300,000	$ 200,000	$ 800,000	$ 500,000

Other comprehensive income loss general hedge gain loss before reclassification tax (benefit) amount.

No definition available.

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- Definition

Amount of tax expense (benefit), after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss.

+ References

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- Definition

Amount of tax expense (benefit) for reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
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Amount of tax expense (benefit), after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

+ References

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan.

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