Commitments and contingencies (Details) - West Leo - USD ($) $ in Millions	Jul. 03, 2018	Oct. 01, 2016
Loss Contingencies [Line Items]
Period for force majeure		60 days
Litigation recovery	$ 250.5

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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