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Financial Instruments and Risk Management (Fuel Option Contracts) (Details) - Fuel Options [Member] - Commodity price risk [member] $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) $ / gal	Dec. 31, 2020 USD ($)
Disclosure of detailed information about hedged items [line items]
Gains (losses) on change in fair value of derivatives | $	$ (0.9)	$ (0.1)
Financial assets, at fair value | $	$ 0.4
Bottom of range [member]
Disclosure of detailed information about hedged items [line items]
Average price of hedging instrument | $ / gal	1.87
Top of range [member]
Disclosure of detailed information about hedged items [line items]
Average price of hedging instrument | $ / gal	2.28

X

- Definition

The average price of a hedging instrument. [Refer: Hedging instruments [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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-IssueDate 2021-01-01
-Paragraph 23B
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-URIDate 2021-03-24

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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

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2021-01-01
-Paragraph 25
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-URIDate 2021-03-24

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- Definition

The gains (losses) resulting from change in the fair value of derivatives recognised in profit or loss. [Refer: Derivatives [member]]

+ References

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-IssueDate 2021-01-01
-Paragraph 85
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-URIDate 2021-03-24

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