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Financial Instruments and Risk Management (Fuel Option Contracts Rollforward) (Details) - Commodity price risk - Fair value hedges - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Disclosure of detailed information about hedged items [line items]
Change in value on currency instruments	$ (0.1)	$ (0.2)
Fuel Contracts
Disclosure of detailed information about hedged items [line items]
Balance, beginning of the period	(0.1)	0.1
Deferred income tax related to hedging instrument	(0.1)	0.0
Balance, end of period	(0.2)	(0.1)
Change in value on currency instruments	$ 0.1	$ 0.0

X

- Definition

Financial instruments designated as hedging instruments, at fair value1

+ References

No definition available.

+ Details

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- Definition

Increase (decrease) through net exchange differences, allowance account for credit losses of financial assets1

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

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X

- Definition

The amount of income tax relating to amounts recognised in other comprehensive income in relation to hedges of investments in equity instruments that the entity has designated at fair value through other comprehensive income. [Refer: Other comprehensive income; Reserve of gains and losses on hedging instruments that hedge investments in equity instruments]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 90
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-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2024-01-01
-Paragraph 81
-Subparagraph ab
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_ab&doctype=Standard
-URIDate 2024-03-27

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- Details

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