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Property, plant and equipment (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Property, plant and equipment |  |
Property, plant and equipment - beginning of the year | € 53,943 | € 62,192
Additions | 4,950 | 4,407
Depreciation capitalized | 118 | 104
Depreciation | (5,966) | (6,205)
Reversals | 1,535 | 648
Impairment | (1,626) | (3,754)
Write-off | (352) | (305)
Currency translation differences | 3,688 | (4,140)
Initial recognition and changes in estimates | 195 | 955
Changes in the scope of consolidation | (252) |
Other changes | 66 | 41
Property, plant and equipment - end of the year | 56,299 | 53,943
Land and buildings |  |
Property, plant and equipment |  |
Property, plant and equipment - beginning of the year | 1,128 | 1,218
Additions | 18 | 12
Depreciation | (49) | (55)
Reversals |  | 13
Impairment | (101) | (82)
Write-off | (1) |
Currency translation differences | 2 | (2)
Changes in the scope of consolidation | 22 |
Transfers | 50 | 39
Other changes | 2 | (15)
Property, plant and equipment - end of the year | 1,071 | 1,128
E&P wells, plant and machinery |  |
Property, plant and equipment |  |
Property, plant and equipment - beginning of the year | 39,648 | 46,492
Additions | 8 | 6
Depreciation | (5,421) | (5,642)
Reversals | 1,080 | 183
Impairment | (90) | (1,551)
Currency translation differences | 2,956 | (3,325)
Initial recognition and changes in estimates | 200 | 870
Transfers | 3,841 | 2,677
Other changes | 120 | (62)
Property, plant and equipment - end of the year | 42,342 | 39,648
Other plant and machinery |  |
Property, plant and equipment |  |
Property, plant and equipment - beginning of the year | 3,299 | 3,632
Additions | 277 | 229
Depreciation | (496) | (508)
Reversals | 118 | 342
Impairment | (768) | (972)
Write-off | (2) | (1)
Currency translation differences | 66 | (75)
Changes in the scope of consolidation | 1,001 |
Transfers | 409 | 755
Other changes | (54) | (103)
Property, plant and equipment - end of the year | 3,850 | 3,299
E&P exploration assets and appraisal |  |
Property, plant and equipment |  |
Property, plant and equipment - beginning of the year | 1,341 | 1,563
Additions | 380 | 265
Depreciation capitalized | 28 | 4
Write-off | (331) | (296)
Currency translation differences | 106 | (119)
Initial recognition and changes in estimates | (9) | (9)
Changes in the scope of consolidation | (199) |
Transfers | (44) | (47)
Other changes | (28) | (20)
Property, plant and equipment - end of the year | 1,244 | 1,341
E&P tangible assets in progress |  |
Property, plant and equipment |  |
Property, plant and equipment - beginning of the year | 7,118 | 7,412
Additions | 3,413 | 3,127
Depreciation capitalized | 90 | 100
Reversals | 337 | 98
Impairment | (85) | (567)
Write-off | (18) | (7)
Currency translation differences | 546 | (605)
Initial recognition and changes in estimates | 4 | 94
Changes in the scope of consolidation | (1,119) |
Transfers | (3,797) | (2,630)
Other changes | 56 | 96
Property, plant and equipment - end of the year | 6,545 | 7,118
Other tangible assets in progress and advances |  |
Property, plant and equipment |  |
Property, plant and equipment - beginning of the year | 1,409 | 1,875
Additions | 854 | 768
Reversals |  | 12
Impairment | (582) | (582)
Write-off |  | (1)
Currency translation differences | 12 | (14)
Changes in the scope of consolidation | 43 |
Transfers | (459) | (794)
Other changes | (30) | 145
Property, plant and equipment - end of the year | 1,247 | 1,409
Gross carrying amount |  |
Property, plant and equipment |  |
Property, plant and equipment - beginning of the year | 184,641 |
Property, plant and equipment - end of the year | 198,746 | 184,641
Gross carrying amount | Land and buildings |  |
Property, plant and equipment |  |
Property, plant and equipment - beginning of the year | 4,082 |
Property, plant and equipment - end of the year | 4,175 | 4,082
Gross carrying amount | E&P wells, plant and machinery |  |
Property, plant and equipment |  |
Property, plant and equipment - beginning of the year | 136,468 |
Property, plant and equipment - end of the year | 149,117 | 136,468
Gross carrying amount | Other plant and machinery |  |
Property, plant and equipment |  |
Property, plant and equipment - beginning of the year | 28,839 |
Property, plant and equipment - end of the year | 30,618 | 28,839
Gross carrying amount | E&P exploration assets and appraisal |  |
Property, plant and equipment |  |
Property, plant and equipment - beginning of the year | 1,341 |
Property, plant and equipment - end of the year | 1,244 | 1,341
Gross carrying amount | E&P tangible assets in progress |  |
Property, plant and equipment |  |
Property, plant and equipment - beginning of the year | 11,169 |
Property, plant and equipment - end of the year | 10,485 | 11,169
Gross carrying amount | Other tangible assets in progress and advances |  |
Property, plant and equipment |  |
Property, plant and equipment - beginning of the year | 2,742 |
Property, plant and equipment - end of the year | 3,107 | 2,742
Accumulated depreciation, amortisation and impairment |  |
Property, plant and equipment |  |
Property, plant and equipment - beginning of the year | (130,698) |
Property, plant and equipment - end of the year | (142,447) | (130,698)
Accumulated depreciation, amortisation and impairment | Land and buildings |  |
Property, plant and equipment |  |
Property, plant and equipment - beginning of the year | (2,954) |
Property, plant and equipment - end of the year | (3,104) | (2,954)
Accumulated depreciation, amortisation and impairment | E&P wells, plant and machinery |  |
Property, plant and equipment |  |
Property, plant and equipment - beginning of the year | (96,820) |
Property, plant and equipment - end of the year | (106,775) | (96,820)
Accumulated depreciation, amortisation and impairment | Other plant and machinery |  |
Property, plant and equipment |  |
Property, plant and equipment - beginning of the year | (25,540) |
Property, plant and equipment - end of the year | (26,768) | (25,540)
Accumulated depreciation, amortisation and impairment | E&P tangible assets in progress |  |
Property, plant and equipment |  |
Property, plant and equipment - beginning of the year | (4,051) |
Property, plant and equipment - end of the year | (3,940) | (4,051)
Accumulated depreciation, amortisation and impairment | Other tangible assets in progress and advances |  |
Property, plant and equipment |  |
Property, plant and equipment - beginning of the year | (1,333) |
Property, plant and equipment - end of the year | € (1,860) | € (1,333)

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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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- Definition The increase (decrease) in property, plant and equipment resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: 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 viii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2021-en-r&anchor=para_73_e_viii&doctype=Standard -URIDate 2021-03-24 + Details
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