Material Accounting Policies - Critical accounting judgments and key sources of estimation uncertainty (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Impairment of vessels
Tangible fixed assets	$ 1,477,458	$ 1,677,771
Vessels
Impairment of vessels
Tangible fixed assets	$ 1,470,141	$ 1,672,159

The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. Note that right-of-use assets are not included. [Contrast: Property, plant and equipment including right-of-use assets]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
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-IssueDate 2023-01-01
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-URIDate 2023-03-23

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 54
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_54_a&doctype=Standard
-URIDate 2023-03-23

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