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Debt (Guarantees) (Details) - Ravenhall $ in Millions, $ in Millions | Dec. 31, 2023 AUD ($) Guarantee | Dec. 31, 2023 USD ($) Guarantee
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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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