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Property, plant and equipment - Owned assets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | $ 3,654,475 |
Asset impairment charge | 124,788 | $ 0
Value at end of period | 3,501,683 | 3,654,475
Buildings, plant installations and machinery |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | 2,085,505 |
Value at end of period | 3,298,360 | 2,085,505
Plants under construction |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | 1,355,497 |
Value at end of period | 0 | 1,355,497
Ocean vessels |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | 179,333 |
Value at end of period | 169,240 | 179,333
Other |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | 34,140 |
Value at end of period | 34,083 | 34,140
Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | 6,605,090 | 6,383,835
Additions | 225,140 | 532,073
Disposals and other | 100,431 | 310,818
Transfers | 0 |
Value at end of period | 6,729,799 | 6,605,090
Cost | Buildings, plant installations and machinery |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | 4,880,207 | 5,000,999
Additions | 97,439 | 174,058
Disposals and other | 91,338 | 294,850
Transfers | 1,471,112 |
Value at end of period | 6,357,420 | 4,880,207
Cost | Plants under construction |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | 1,355,497 | 1,001,888
Additions | 123,881 | 353,609
Disposals and other | 8,266 | 0
Transfers | (1,471,112) |
Value at end of period | 0 | 1,355,497
Cost | Plants under construction | Methanol plant in Geismar, Louisiana |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Owned assets, capitalized interest | 201,000 | 150,000
Cost | Ocean vessels |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | 240,723 | 240,867
Additions | 2,013 | 253
Disposals and other | 277 | 397
Transfers | 0 |
Value at end of period | 242,459 | 240,723
Cost | Other |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | 128,663 | 140,081
Additions | 1,807 | 4,153
Disposals and other | 550 | 15,571
Transfers | 0 |
Value at end of period | 129,920 | 128,663
Accumulated depreciation |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | (2,950,615) | (2,985,030)
Disposals and other | (97,604) | (297,431)
Depreciation | 250,317 | 263,016
Asset impairment charge | 124,788 |
Value at end of period | (3,228,116) | (2,950,615)
Accumulated depreciation | Buildings, plant installations and machinery |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | (2,794,702) | (2,827,870)
Disposals and other | (96,828) | (281,951)
Depreciation | 236,398 | 248,783
Asset impairment charge | 124,788 |
Value at end of period | (3,059,060) | (2,794,702)
Accumulated depreciation | Plants under construction |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | 0 | 0
Disposals and other | 0 | 0
Depreciation | 0 | 0
Asset impairment charge | 0 |
Value at end of period | 0 | 0
Accumulated depreciation | Ocean vessels |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | (61,390) | (49,310)
Disposals and other | 0 | 0
Depreciation | 11,829 | 12,080
Asset impairment charge | 0 |
Value at end of period | (73,219) | (61,390)
Accumulated depreciation | Other |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | (94,523) | (107,850)
Disposals and other | (776) | (15,480)
Depreciation | 2,090 | 2,153
Asset impairment charge | 0 |
Value at end of period | $ (95,837) | $ (94,523)

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- Definition The amount of additions to property, plant and equipment other than those acquired through business combinations. [Refer: Total for all business combinations [member]; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2024-01-01 -Paragraph 73 -Subparagraph e -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e_i&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of depreciation of property, plant and equipment. [Refer: Depreciation and amortisation expense; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2024-01-01 -Paragraph 73 -Subparagraph e -Clause vii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e_vii&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2024-01-01 -Paragraph 75 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_75_a&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The decrease in property, plant and equipment resulting from disposals. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2024-01-01 -Paragraph 73 -Subparagraph e -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e_ii&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of impairment loss recognised in profit or loss for property, plant and equipment. [Refer: Impairment loss recognised in profit or loss; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2024-01-01 -Paragraph 73 -Subparagraph e -Clause v -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e_v&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 98 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_98_a&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The increase (decrease) in property, plant and equipment resulting from transfers. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 16 -IssueDate 2024-01-01 -Paragraph 73 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition 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] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2024-01-01 -Paragraph 73 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 54 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_a&doctype=Standard -URIDate 2024-03-27 + Details
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