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Leases - Lease Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Commitments [Line Items]
Lease liabilities, beginning balance	$ 0.0
Payments	(10.6)	$ 0.0
Interest (Note 19)	1.4	0.0
Foreign exchange revaluation	(1.4)
Lease liabilities, ending balance	36.6	0.0
Current portion	15.2	0.0
Non-current portion	21.4	$ 0.0
Argonaut Transaction
Commitments [Line Items]
Leases assumed as part of Argonaut transaction (Note 6)	$ 47.2

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- Definition

[Line Items] for Commitments [Table]

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No definition available.

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- Definition

The amount recognised as of the acquisition date for contract liabilities assumed in a business combination. [Refer: Contract liabilities; Total for all business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The amount of current lease liabilities. [Refer: Lease liabilities]

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- Definition

The increase (decrease) in right-of-use assets resulting from changes that the entity does not separately disclose in the same statement or note. [Refer: Right-of-use assets]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The amount of interest expense on lease liabilities. [Refer: Lease liabilities]

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- Definition

The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration.

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The amount of non-current lease liabilities. [Refer: Lease liabilities]

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The cash outflow for payment of lease liabilities, classified as financing activities. [Refer: Lease liabilities]

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