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Commitments and contingencies - Narrative (Details) $ in Millions | Sep. 30, 2022 USD ($)
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Loss Contingencies [Line Items] |
Performance bond commitments | $ 19.0
Pending Litigation |
Loss Contingencies [Line Items] |
Disallowance | 19.9
Settled Litigation |
Loss Contingencies [Line Items] |
Disallowance | $ 5.4

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