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Provisions, income tax liabilities and other liabilities - Summary of Movements in Non-current Provisions (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Reconciliation of changes in other provisions [abstract] |  |  |
Beginning balance | € 5,822 | € 6,430 | € 6,998
Changes in scope of consolidation | 0 | (200) | 35
Increases in provisions | 952 | 1,285 | 731
Provisions utilized | (408) | (528) | (459)
Reversals of unutilized provisions | (758) | (288) | (200)
Transfers | (572) | (274) | (425)
Net interest related to employee benefits, and unwinding of discount | 120 | 64 | 53
Currency translation differences | (65) | 113 | 145
Actuarial gains and losses on defined-benefit plans | 171 | (780) | (448)
Ending balance | 5,262 | 5,822 | 6,430
Provisions for pensions and other post-employment benefits |  |  |
Reconciliation of changes in other provisions [abstract] |  |  |
Beginning balance | 2,039 | 2,947 | 3,276
Changes in scope of consolidation | 0 | (96) | (2)
Increases in provisions | 141 | 193 | 247
Provisions utilized | (162) | (275) | (222)
Reversals of unutilized provisions | (21) | (66) | (13)
Transfers | (1) | 10 | (13)
Net interest related to employee benefits, and unwinding of discount | 70 | 43 | 42
Currency translation differences | (23) | 63 | 80
Actuarial gains and losses on defined-benefit plans | 171 | (780) | (448)
Ending balance | 2,214 | 2,039 | 2,947
Provisions for other long-term benefits |  |  |
Reconciliation of changes in other provisions [abstract] |  |  |
Beginning balance | 844 | 935 | 879
Changes in scope of consolidation | 0 | (28) | 0
Increases in provisions | 185 | 40 | 156
Provisions utilized | (107) | (119) | (122)
Reversals of unutilized provisions | (190) | (20) | (7)
Transfers | 0 | 4 | (3)
Net interest related to employee benefits, and unwinding of discount | 3 | 4 | 2
Currency translation differences | (17) | 28 | 30
Actuarial gains and losses on defined-benefit plans | 0 | 0 | 0
Ending balance | 718 | 844 | 935
Restructuring provisions |  |  |
Reconciliation of changes in other provisions [abstract] |  |  |
Beginning balance | 761 | 524 | 868
Changes in scope of consolidation | 0 | 0 | 0
Increases in provisions | 315 | 521 | 67
Provisions utilized | (25) | (12) | (8)
Reversals of unutilized provisions | (159) | (11) | (35)
Transfers | (361) | (265) | (370)
Net interest related to employee benefits, and unwinding of discount | 23 | 5 | 0
Currency translation differences | 0 | (1) | 2
Actuarial gains and losses on defined-benefit plans | 0 | 0 | 0
Ending balance | 554 | 761 | 524
Other provisions |  |  |
Reconciliation of changes in other provisions [abstract] |  |  |
Beginning balance | 2,178 | 2,024 | 1,975
Changes in scope of consolidation | 0 | (76) | 37
Increases in provisions | 311 | 531 | 261
Provisions utilized | (114) | (122) | (107)
Reversals of unutilized provisions | (388) | (191) | (145)
Transfers | (210) | (23) | (39)
Net interest related to employee benefits, and unwinding of discount | 24 | 12 | 9
Currency translation differences | (25) | 23 | 33
Actuarial gains and losses on defined-benefit plans | 0 | 0 | 0
Ending balance | € 1,776 | € 2,178 | € 2,024

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- Definition The increase (decrease) in other provisions resulting from foreign currency exchange rate changes on provisions measured in a currency different from the entity's presentation currency. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2023-01-01 -Paragraph 84 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2023-en-r&anchor=para_84&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The increase (decrease) in other provisions resulting from transfers and changes that the entity does not separately disclose in the same statement or note. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2023-01-01 -Paragraph 84 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2023-en-r&anchor=para_84&doctype=Standard -URIDate 2023-03-23 + Details
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