Property, plant and equipment, Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Property, plant and equipment [Abstract]
Balance, beginning of period	$ 2,607,562
Balance, end of period	2,498,671	$ 2,607,562
Cost [Member]
Property, plant and equipment [Abstract]
Balance, beginning of period	3,890,514	3,917,717
Additions (Note 7)	193,601	72,238
Disposal of vessels (Note 7)	(96,327)	(80,235)
Reclassified to assets held for sale	(54,415)
Write off on expiration of leases	(51,907)
Write off on completion of dry docking cycle	(42,340)	(19,206)
Balance, end of period	3,839,126	3,890,514
Accumulated Depreciation and Impairment Charges [Member]
Property, plant and equipment [Abstract]
Balance, beginning of period	1,282,952	1,140,095
Depreciation charge	201,702	214,308
Disposal of vessels (Note 7)	(33,027)	(52,245)
Reclassified to assets held for sale	16,925
Write off on expiration of leases	(51,907)
Write off on completion of dry docking cycle	(42,340)	(19,206)
Balance, end of period	1,340,455	1,282,952
Vessels and Scrubbers [Member]
Property, plant and equipment [Abstract]
Balance, beginning of period	2,521,223
Balance, end of period	2,344,757	2,521,223
Vessels and Scrubbers [Member] \| Cost [Member]
Property, plant and equipment [Abstract]
Balance, beginning of period	3,510,379	3,573,265
Additions (Note 7)	54,063	12,514
Disposal of vessels (Note 7)	(87,873)	(75,400)
Reclassified to assets held for sale	(50,163)
Write off on expiration of leases	0
Write off on completion of dry docking cycle	0	0
Balance, end of period	3,426,406	3,510,379
Vessels and Scrubbers [Member] \| Accumulated Depreciation and Impairment Charges [Member]
Property, plant and equipment [Abstract]
Balance, beginning of period	989,156	899,327
Depreciation charge	134,607	139,048
Disposal of vessels (Note 7)	(27,308)	(49,219)
Reclassified to assets held for sale	14,806
Write off on expiration of leases	0
Write off on completion of dry docking cycle	0	0
Balance, end of period	1,081,649	989,156
Dry Docking [Member]
Property, plant and equipment [Abstract]
Balance, beginning of period	66,945
Balance, end of period	114,636	66,945
Dry Docking [Member] \| Cost [Member]
Property, plant and equipment [Abstract]
Balance, beginning of period	156,844	143,375
Additions (Note 7)	91,278	36,230
Disposal of vessels (Note 7)	(8,454)	(3,555)
Reclassified to assets held for sale	(4,252)
Write off on expiration of leases	0
Write off on completion of dry docking cycle	(42,340)	(19,206)
Balance, end of period	193,076	156,844
Dry Docking [Member] \| Accumulated Depreciation and Impairment Charges [Member]
Property, plant and equipment [Abstract]
Balance, beginning of period	89,899	75,216
Depreciation charge	38,719	35,635
Disposal of vessels (Note 7)	(5,719)	(1,746)
Reclassified to assets held for sale	2,119
Write off on expiration of leases	0
Write off on completion of dry docking cycle	(42,340)	(19,206)
Balance, end of period	78,440	89,899
Right-of-use assets - Vessels [Member]
Property, plant and equipment [Abstract]
Balance, beginning of period	18,661
Balance, end of period	38,413	18,661
Right-of-use assets - Vessels [Member] \| Cost [Member]
Property, plant and equipment [Abstract]
Balance, beginning of period	221,713	199,582
Additions (Note 7)	47,789	23,411
Disposal of vessels (Note 7)	0	(1,280)
Reclassified to assets held for sale	0
Write off on expiration of leases	(51,907)
Write off on completion of dry docking cycle	0	0
Balance, end of period	217,595	221,713
Right-of-use assets - Vessels [Member] \| Accumulated Depreciation and Impairment Charges [Member]
Property, plant and equipment [Abstract]
Balance, beginning of period	203,052	165,021
Depreciation charge	28,037	39,311
Disposal of vessels (Note 7)	0	(1,280)
Reclassified to assets held for sale	0
Write off on expiration of leases	(51,907)
Write off on completion of dry docking cycle	0	0
Balance, end of period	179,182	203,052
Other [Member]
Property, plant and equipment [Abstract]
Balance, beginning of period	733
Balance, end of period	865	733
Other [Member] \| Cost [Member]
Property, plant and equipment [Abstract]
Balance, beginning of period	1,578	1,495
Additions (Note 7)	471	83
Disposal of vessels (Note 7)	0	0
Reclassified to assets held for sale	0
Write off on expiration of leases	0
Write off on completion of dry docking cycle	0	0
Balance, end of period	2,049	1,578
Other [Member] \| Accumulated Depreciation and Impairment Charges [Member]
Property, plant and equipment [Abstract]
Balance, beginning of period	845	531
Depreciation charge	339	314
Disposal of vessels (Note 7)	0	0
Reclassified to assets held for sale	0
Write off on expiration of leases	0
Write off on completion of dry docking cycle	0
Balance, end of period	$ 1,184	$ 845

The increase (decrease) in property, plant and equipment resulting from write off on completion of dry docking cycle.

No definition available.

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- Definition

Amount recognized as expense or loss related to leases that have expiration and are written off.

+ References

No definition available.

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- Definition

The amount of additions to property, plant and equipment including right-of-use assets other than those acquired through business combinations. [Refer: Total for all business combinations [member]; Property, plant and equipment including right-of-use assets]

+ References

+ Details

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- Definition

The decrease in property, plant and equipment through classification as held for sale or inclusion in a disposal group classified as held for sale. [Refer: Disposal groups classified as held for sale [member]; Property, plant and equipment; Disposal groups classified as held for sale [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 16
-IssueDate 2025-01-01
-Paragraph 73
-Subparagraph e
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_73_e_ii&doctype=Standard
-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 200
-Subparagraph e
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_200_e_ii&doctype=Standard
-URIDate 2025-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 200
-Subparagraph e
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_200_e_ii&doctype=Standard
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- References

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- Definition

The decrease in property, plant and equipment including right-of-use assets resulting from disposals. [Refer: Property, plant and equipment including right-of-use assets]

+ References

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- Definition

The amount of property, plant and equipment including right-of-use assets whose underlying assets would be presented as property, plant and equipment if they were owned. [Refer: Property, plant and equipment; Right-of-use assets]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 16
-IssueDate 2025-01-01
-Paragraph 73
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_73_e&doctype=Standard
-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2025-01-01
-Paragraph 47
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-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_47_a&doctype=Standard
-URIDate 2025-03-27

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 54
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_a&doctype=Standard
-URIDate 2025-03-27

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- References

No definition available.

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