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Property, plant and equipment - Owned Assets (Details) $ in Thousands, t in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 USD ($) t | Dec. 31, 2020 USD ($)
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | $ 3,052,060 |
Value at end of period | 3,075,198 | $ 3,052,060
Buildings, plant installations and machinery |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | 2,448,736 |
Value at end of period | 2,277,224 | 2,448,736
Plants under construction |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | 386,905 |
Value at end of period | $ 561,860 | 386,905
Plants under construction | Methanol plant in Geismar, Louisiana |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Owned asset (in tonnes) | t | 1.8 |
Ocean-going vessels |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | $ 182,173 |
Value at end of period | 203,254 | 182,173
Other |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | 34,246 |
Value at end of period | 32,860 | 34,246
Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | 5,614,798 | 5,299,801
Additions | 273,032 | 370,136
Disposals and other | 38,575 | 55,139
Value at end of period | 5,849,255 | 5,614,798
Cost | Buildings, plant installations and machinery |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | 4,861,912 | 4,787,515
Additions | 66,802 | 116,850
Disposals and other | 20,222 | 42,453
Value at end of period | 4,908,492 | 4,861,912
Cost | Plants under construction |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | 386,905 | 155,871
Additions | 174,955 | 231,034
Disposals and other | 0 | 0
Value at end of period | 561,860 | 386,905
Cost | Plants under construction | Methanol plant in Geismar, Louisiana |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Owned assets, capitalized interest | 54,000 |
Cost | Ocean-going vessels |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | 210,099 | 201,947
Additions | 30,426 | 20,838
Disposals and other | 0 | 12,686
Value at end of period | 240,525 | 210,099
Cost | Other |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | 155,882 | 154,468
Additions | 849 | 1,414
Disposals and other | 18,353 | 0
Value at end of period | 138,378 | 155,882
Accumulated depreciation |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | (2,562,738) | (2,359,024)
Disposals and other | (38,575) | (39,688)
Depreciation | 249,894 | 243,402
Value at end of period | (2,774,057) | (2,562,738)
Accumulated depreciation | Buildings, plant installations and machinery |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | (2,413,176) | (2,215,060)
Disposals and other | (20,222) | (31,058)
Depreciation | 238,314 | 229,174
Value at end of period | (2,631,268) | (2,413,176)
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
Value at end of period | 0 | 0
Accumulated depreciation | Ocean-going vessels |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | (27,926) | (25,448)
Disposals and other | 0 | (8,601)
Depreciation | 9,345 | 11,079
Value at end of period | (37,271) | (27,926)
Accumulated depreciation | Other |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Value at beginning of period | (121,636) | (118,516)
Disposals and other | (18,353) | (29)
Depreciation | 2,235 | 3,149
Value at end of period | $ (105,518) | $ (121,636)

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- Definition The amount of additions to property, plant and equipment other than those acquired through business combinations. [Refer: Business combinations [member]; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2021-01-01 -Paragraph 73 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2021-en-r&anchor=para_73_e_i&doctype=Standard -URIDate 2021-03-24 + 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 2021-01-01 -Paragraph 73 -Subparagraph e -Clause vii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2021-en-r&anchor=para_73_e_vii&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2021-01-01 -Paragraph 75 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2021-en-r&anchor=para_75_a&doctype=Standard -URIDate 2021-03-24 + Details
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