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Intangible assets (Details) € in Millions | 12 Months Ended
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Dec. 31, 2023 EUR (€) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 EUR (€)
Intangible assets |  |  |
Net carrying amount - beginning of the year | € 5,525 |  | € 4,799
Additions | 476 |  | 356
Amortization | (355) |  | (310)
Impairments | (45) |  | (167)
Reversals | 11 |  |
Write-off | (88) |  | (13)
Changes in the scope of consolidation | 779 |  | 673
Currency translation differences | (20) |  | 66
Other changes | 96 |  | 121
Net carrying amount - end of the year | 6,379 |  | 5,525
Intangible assets with definite useful lives |  |  |
Intangible assets |  |  |
Net carrying amount - beginning of the year | 2,363 |  | 1,913
Additions | 476 |  | 356
Amortization | (355) |  | (310)
Impairments | (39) |  | (14)
Reversals | 11 |  |
Write-off | (88) |  | (13)
Changes in the scope of consolidation | 752 |  | 191
Currency translation differences | (20) |  | 55
Other changes | 120 |  | 185
Net carrying amount - end of the year | 3,220 |  | 2,363
Exploration rights |  |  |
Intangible assets |  |  |
Net carrying amount - beginning of the year | 793 | $ 793 | 913
Additions | 20 |  | 53
Amortization | (8) |  | (12)
Impairments | (22) |  |
Reversals | 11 |  |
Write-off | (85) |  | (13)
Changes in the scope of consolidation |  |  | (200)
Currency translation differences | (19) |  | 54
Other changes | (27) |  | (2)
Net carrying amount - end of the year | 663 |  | 793
Industrial patents and intellectual property rights |  |  |
Intangible assets |  |  |
Net carrying amount - beginning of the year | 176 |  | 155
Additions | 41 |  | 28
Amortization | (92) |  | (74)
Changes in the scope of consolidation | 291 |  |
Other changes | 34 |  | 67
Net carrying amount - end of the year | 450 |  | 176
Other intangible assets with definite useful lives |  |  |
Intangible assets |  |  |
Net carrying amount - beginning of the year | 1,394 |  | 845
Additions | 415 |  | 275
Amortization | (255) |  | (224)
Impairments | (17) |  | (14)
Write-off | (3) |  |
Changes in the scope of consolidation | 461 |  | 391
Currency translation differences | (1) |  | 1
Other changes | 113 |  | 120
Net carrying amount - end of the year | 2,107 |  | 1,394
Goodwill |  |  |
Intangible assets |  |  |
Net carrying amount - beginning of the year | 3,138 |  | 2,862
Impairments | (6) |  | (153)
Changes in the scope of consolidation | 25 |  | 482
Currency translation differences |  |  | 11
Other changes | (24) |  | (64)
Net carrying amount - end of the year | 3,133 |  | 3,138
Other intangible assets with indefinite useful lives |  |  |
Intangible assets |  |  |
Net carrying amount - beginning of the year | 24 |  | 24
Changes in the scope of consolidation | 2 |  |
Net carrying amount - end of the year | 26 |  | 24
Gross carrying amount | Intangible assets with definite useful lives |  |  |
Intangible assets |  |  |
Net carrying amount - beginning of the year | 6,939 |  |
Net carrying amount - end of the year | 8,088 |  | 6,939
Gross carrying amount | Exploration rights |  |  |
Intangible assets |  |  |
Net carrying amount - beginning of the year | 1,428 |  |
Net carrying amount - end of the year | 1,295 |  | 1,428
Gross carrying amount | Industrial patents and intellectual property rights |  |  |
Intangible assets |  |  |
Net carrying amount - beginning of the year | 1,806 |  |
Net carrying amount - end of the year | 2,119 |  | 1,806
Gross carrying amount | Other intangible assets with definite useful lives |  |  |
Intangible assets |  |  |
Net carrying amount - beginning of the year | 3,705 |  |
Net carrying amount - end of the year | 4,674 |  | 3,705
Accumulated depreciation, amortisation and impairment | Intangible assets with definite useful lives |  |  |
Intangible assets |  |  |
Net carrying amount - beginning of the year | (4,576) |  |
Net carrying amount - end of the year | (4,868) |  | (4,576)
Accumulated depreciation, amortisation and impairment | Exploration rights |  |  |
Intangible assets |  |  |
Net carrying amount - beginning of the year | (635) |  |
Net carrying amount - end of the year | (632) |  | (635)
Accumulated depreciation, amortisation and impairment | Industrial patents and intellectual property rights |  |  |
Intangible assets |  |  |
Net carrying amount - beginning of the year | (1,630) |  |
Net carrying amount - end of the year | (1,669) |  | (1,630)
Accumulated depreciation, amortisation and impairment | Other intangible assets with definite useful lives |  |  |
Intangible assets |  |  |
Net carrying amount - beginning of the year | (2,311) |  |
Net carrying amount - end of the year | € (2,567) |  | € (2,311)

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