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Debt (Guarantees) (Details) - Ravenhall $ in Millions, $ in Millions	Dec. 31, 2023 AUD ($) Guarantee	Dec. 31, 2023 USD ($) Guarantee
Debt Instrument [Line Items]
Number of letters of guarantee outstanding under separate international facilities relating to performance guarantees | Guarantee	5	5
Letters of guarantee outstanding relating to performance guarantees | $		$ 9.1
Letter of credit | Revolver
Debt Instrument [Line Items]
Maximum exposure, undiscounted	$ 53.1	$ 36.2

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Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

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