The cumulative amount of the reporting entity's undistributed earnings or deficit.

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Name:	us-gaap_RetainedEarningsAccumulatedDeficit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Basis of Presentation Narrative (Details) - USD ($) $ in Thousands	Jul. 04, 2020	Sep. 29, 2019	Sep. 28, 2019	Sep. 30, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Retained earnings	$ 1,257,374	$ 1,177,600	$ 1,178,677
Adjustments due to the adoption of ASU 2014-09 \| ASU 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Retained earnings				$ 7,800