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Contingencies Contingencies (Details) $ in Millions				3 Months Ended
Contingencies Contingencies (Details) $ in Millions	Feb. 06, 2020 USD ($)	Dec. 28, 2019 USD ($)	Jun. 27, 2018 USD ($) claim	Dec. 28, 2019 USD ($)	Nov. 26, 2019 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Number of claims \| claim			3
Damages awarded			$ 12.6
Pet Segment \| Athens, Texas \| Loss From Fire
Loss Contingencies [Line Items]
Loss contingency, loss in period		$ 19.0
Insurance proceeds		$ 8.0
Loss contingency, cost in excess of insurance proceeds				$ 11.0
Minimum \| Pet Segment \| Athens, Texas \| Loss From Fire
Loss Contingencies [Line Items]
Inventory and property related losses					$ 35.0
Maximum \| Pet Segment \| Athens, Texas \| Loss From Fire
Loss Contingencies [Line Items]
Inventory and property related losses					$ 40.0
Subsequent Event \| Pet Segment \| Athens, Texas \| Loss From Fire
Loss Contingencies [Line Items]
Loss contingency accrual, payments	$ 11.0