Property, plant and equipment (Details) - USD ($) $ in Millions | 12 Months Ended |
Dec. 31, 2021 | Dec. 31, 2020 |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | $ 68,508 | $ 71,751 |
Property plant and equipment ending | 62,075 | 68,508 |
Assets transferred to Property, plant and equipment from Intangible assets | 1,730 | 89 |
Cost [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 215,587 | 209,221 |
Additions through business combinations | 4 | |
Additions and transfers | 7,225 | 11,433 |
Disposals at cost | (4,420) | (295) |
Assets reclassified to held for sale | (1,664) | (9,335) |
Effect of changes in foreign exchange | (4,497) | 4,563 |
Property plant and equipment ending | 212,234 | 215,587 |
Cost [member] | As reported [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 212,751 | 207,422 |
Property plant and equipment ending | | 212,751 |
Cost [member] | Impact of policy change [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 2,836 | 1,799 |
Property plant and equipment ending | | 2,836 |
Cost [member] | As restated [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 215,587 | |
Property plant and equipment ending | | 215,587 |
Accumulated depreciation, amortisation and impairment [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | (147,079) | (137,469) |
Assets reclassified to held for sale | 1,367 | 8,525 |
Depreciation | (10,408) | (9,488) |
Impairment losses | (2,962) | (5,889) |
Reversal of impairment losses | 1,677 | 218 |
Transfers | (11) | (10) |
Accumulated depreciation and impairment disposed assets | 4,118 | 278 |
Effect of changes in foreign exchange | 3,138 | (3,244) |
Property plant and equipment ending | (150,159) | (147,079) |
Machinery, equipment and transportation equipment [Member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 209 | |
Property plant and equipment ending | $ 147 | $ 209 |
Machinery, equipment and transportation equipment [Member] | Maximum [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Estimated useful lives (years) | 20 years | 20 years |
Machinery, equipment and transportation equipment [Member] | Minimum [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Estimated useful lives (years) | 3 years | 3 years |
Machinery, equipment and transportation equipment [Member] | Cost [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | $ 2,806 | $ 2,818 |
Additions through business combinations | 0 | |
Additions and transfers | 39 | 68 |
Disposals at cost | (1,496) | (28) |
Assets reclassified to held for sale | 0 | (66) |
Effect of changes in foreign exchange | (13) | 13 |
Property plant and equipment ending | 1,335 | 2,806 |
Machinery, equipment and transportation equipment [Member] | Cost [member] | As reported [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 2,806 | 2,818 |
Property plant and equipment ending | | 2,806 |
Machinery, equipment and transportation equipment [Member] | Cost [member] | Impact of policy change [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 0 | 0 |
Property plant and equipment ending | | 0 |
Machinery, equipment and transportation equipment [Member] | Cost [member] | As restated [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 2,806 | |
Property plant and equipment ending | | 2,806 |
Machinery, equipment and transportation equipment [Member] | Accumulated depreciation, amortisation and impairment [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | (2,596) | (2,395) |
Assets reclassified to held for sale | 0 | 65 |
Depreciation | (68) | (102) |
Impairment losses | (42) | (201) |
Reversal of impairment losses | 0 | 0 |
Transfers | 61 | 18 |
Accumulated depreciation and impairment disposed assets | 1,448 | 27 |
Effect of changes in foreign exchange | 9 | (9) |
Property plant and equipment ending | (1,188) | (2,596) |
Production plants and oil and gas assets [Member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 50,654 | |
Property plant and equipment ending | 45,595 | 50,654 |
Production plants and oil and gas assets [Member] | Cost [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 183,082 | 180,825 |
Additions through business combinations | 2 | |
Additions and transfers | 7,311 | 7,782 |
Disposals at cost | (1,975) | (243) |
Assets reclassified to held for sale | (1,010) | (9,095) |
Effect of changes in foreign exchange | (4,052) | 3,812 |
Property plant and equipment ending | 183,358 | 183,082 |
Production plants and oil and gas assets [Member] | Cost [member] | As reported [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 180,355 | 179,063 |
Property plant and equipment ending | | 180,355 |
Production plants and oil and gas assets [Member] | Cost [member] | Impact of policy change [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 2,726 | 1,762 |
Property plant and equipment ending | | 2,726 |
Production plants and oil and gas assets [Member] | Cost [member] | As restated [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 183,082 | |
Property plant and equipment ending | | 183,082 |
Production plants and oil and gas assets [Member] | Accumulated depreciation, amortisation and impairment [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | (132,427) | (125,327) |
Assets reclassified to held for sale | 825 | 8,373 |
Depreciation | (9,136) | (8,240) |
Impairment losses | (2,092) | (4,667) |
Reversal of impairment losses | 1,675 | 218 |
Transfers | (1,319) | (68) |
Accumulated depreciation and impairment disposed assets | 1,785 | 231 |
Effect of changes in foreign exchange | 2,926 | (2,947) |
Property plant and equipment ending | (137,763) | (132,427) |
Refining and manufacturing plants [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 1,232 | |
Property plant and equipment ending | $ 555 | $ 1,232 |
Refining and manufacturing plants [member] | Maximum [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Estimated useful lives (years) | 20 years | 20 years |
Refining and manufacturing plants [member] | Minimum [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Estimated useful lives (years) | 15 years | 15 years |
Refining and manufacturing plants [member] | Cost [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | $ 9,238 | $ 8,920 |
Additions through business combinations | 0 | |
Additions and transfers | 95 | 110 |
Disposals at cost | (70) | (7) |
Assets reclassified to held for sale | (563) | 0 |
Effect of changes in foreign exchange | (220) | 214 |
Property plant and equipment ending | 8,481 | 9,238 |
Refining and manufacturing plants [member] | Cost [member] | As reported [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 9,238 | 8,920 |
Property plant and equipment ending | | 9,238 |
Refining and manufacturing plants [member] | Cost [member] | Impact of policy change [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 0 | 0 |
Property plant and equipment ending | | 0 |
Refining and manufacturing plants [member] | Cost [member] | As restated [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 9,238 | |
Property plant and equipment ending | | 9,238 |
Refining and manufacturing plants [member] | Accumulated depreciation, amortisation and impairment [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | (8,005) | (7,051) |
Assets reclassified to held for sale | 461 | 0 |
Depreciation | (232) | (248) |
Impairment losses | (401) | (516) |
Reversal of impairment losses | 0 | 0 |
Transfers | 0 | (1) |
Accumulated depreciation and impairment disposed assets | 59 | 7 |
Effect of changes in foreign exchange | 192 | (196) |
Property plant and equipment ending | (7,926) | (8,005) |
Buildings and land [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 405 | |
Property plant and equipment ending | $ 276 | $ 405 |
Buildings and land [member] | Maximum [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Estimated useful lives (years) | 33 years | 33 years |
Buildings and land [member] | Minimum [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Estimated useful lives (years) | 10 years | 20 years |
Buildings and land [member] | Cost [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | $ 929 | $ 909 |
Additions through business combinations | 0 | |
Additions and transfers | 27 | 27 |
Disposals at cost | (353) | 0 |
Assets reclassified to held for sale | 0 | (15) |
Effect of changes in foreign exchange | (6) | 7 |
Property plant and equipment ending | 596 | 929 |
Buildings and land [member] | Cost [member] | As reported [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 929 | 909 |
Property plant and equipment ending | | 929 |
Buildings and land [member] | Cost [member] | Impact of policy change [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 0 | 0 |
Property plant and equipment ending | | 0 |
Buildings and land [member] | Cost [member] | As restated [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 929 | |
Property plant and equipment ending | | 929 |
Buildings and land [member] | Accumulated depreciation, amortisation and impairment [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | (524) | (475) |
Assets reclassified to held for sale | 0 | 12 |
Depreciation | (42) | (23) |
Impairment losses | (21) | (36) |
Reversal of impairment losses | 0 | 0 |
Transfers | (61) | 0 |
Accumulated depreciation and impairment disposed assets | 326 | 0 |
Effect of changes in foreign exchange | 2 | (3) |
Property plant and equipment ending | (320) | (524) |
Assets under development [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 11,888 | |
Property plant and equipment ending | 12,270 | 11,888 |
Assets under development [member] | Cost [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 13,163 | 10,408 |
Additions through business combinations | 1 | |
Additions and transfers | (396) | 2,478 |
Disposals at cost | (25) | (5) |
Assets reclassified to held for sale | 0 | (159) |
Effect of changes in foreign exchange | (130) | 441 |
Property plant and equipment ending | 12,614 | 13,163 |
Assets under development [member] | Cost [member] | As reported [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 13,053 | 10,371 |
Property plant and equipment ending | | 13,053 |
Assets under development [member] | Cost [member] | Impact of policy change [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 110 | 37 |
Property plant and equipment ending | | 110 |
Assets under development [member] | Cost [member] | As restated [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 13,163 | |
Property plant and equipment ending | | 13,163 |
Assets under development [member] | Accumulated depreciation, amortisation and impairment [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | (1,275) | (892) |
Assets reclassified to held for sale | 0 | 75 |
Depreciation | 0 | 0 |
Impairment losses | (390) | (445) |
Reversal of impairment losses | 0 | 0 |
Transfers | 1,319 | 41 |
Accumulated depreciation and impairment disposed assets | 21 | 1 |
Effect of changes in foreign exchange | (18) | (56) |
Property plant and equipment ending | (344) | (1,275) |
Right of use assets [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 4,119 | |
Property plant and equipment ending | $ 3,231 | $ 4,119 |
Right of use assets [member] | Maximum [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Estimated useful lives (years) | 20 years | 19 years |
Right of use assets [member] | Minimum [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Estimated useful lives (years) | 1 year | 1 year |
Right of use assets [member] | Cost [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | $ 6,370 | $ 5,339 |
Additions through business combinations | 0 | |
Additions and transfers | 148 | 968 |
Disposals at cost | (501) | (13) |
Assets reclassified to held for sale | (91) | 0 |
Effect of changes in foreign exchange | (77) | 75 |
Property plant and equipment ending | 5,850 | 6,370 |
Right of use assets [member] | Cost [member] | As reported [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 6,370 | 5,339 |
Property plant and equipment ending | | 6,370 |
Right of use assets [member] | Cost [member] | Impact of policy change [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 0 | 0 |
Property plant and equipment ending | | 0 |
Right of use assets [member] | Cost [member] | As restated [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | 6,370 | |
Property plant and equipment ending | | 6,370 |
Right of use assets [member] | Accumulated depreciation, amortisation and impairment [member] | | |
Disclosure of detailed information about property, plant and equipment [line items] | | |
Property plant and equipment beginning | (2,251) | (1,329) |
Assets reclassified to held for sale | 82 | 0 |
Depreciation | (930) | (874) |
Impairment losses | (17) | (25) |
Reversal of impairment losses | 2 | 0 |
Transfers | (11) | 0 |
Accumulated depreciation and impairment disposed assets | 480 | 11 |
Effect of changes in foreign exchange | 27 | (35) |
Property plant and equipment ending | $ (2,619) | $ (2,251) |