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Provisions, income tax liabilities and other liabilities - Reconciliation of Net Amount Recognized in Respect of Pension and Other Post-employment Benefit Plans (Details) - EUR (€) € in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of net defined benefit liability (asset) [line items] |  |  |  |  |
Actuarial losses/(gains) due to changes in financial assumptions |  | € 11 | € (168) | € 622 |
Pre-funded pension obligations |  | 156 | 271 | 269 |
Obligations provided for |  | 5,762 | 5,262 | 5,822 | € 6,430
UK |  |  |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |  |  |
Actuarial losses/(gains) due to changes in demographic assumptions |  | (50) | (11) | (54) |
Actuarial losses/(gains) due to changes in financial assumptions |  | (210) | 43 | (1,143) |
Remeasurement of net defined-benefit (asset)/ liability (actuarial gains and losses) |  | (212) | (44) | (131) |
Plan assets | UK |  |  |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |  |  |
End of period |  | (204) |  |  |
Pensions and other post-employment benefits |  |  |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |  |  |
Beginning of period |  | 1,943 | 1,770 |  |
Current service cost | [1] | 138 | 140 | 193 |
Interest (income)/cost | [1] | 64 | 71 | 43 |
Plan amendments, curtailments or settlements not specified in the terms of the plan | [1] | (110) | (22) | (68) |
Administration costs and taxes paid during the period | [1] | (13) | (7) | (6) |
Contributions from plan members | [1] | 5 | 6 | 6 |
Net obligation |  | 1,832 | 1,937 | 1,752 |
Pre-funded pension obligations | [2] | 156 | 271 | 269 |
Expense recognized directly in profit or loss | [1] | 100 | 190 | 168 |
End of period |  | 1,836 | 1,943 | 1,770 |
Remeasurement of net defined-benefit (asset)/ liability (actuarial gains and losses) | [1],[3] | (13) | 171 | (650) |
Expense/(gain) for the period | [1] | 87 | 361 | (482) |
Pensions and other post-employment benefits | UK |  |  |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |  |  |
Beginning of period |  | (61) | (95) |  |
Current service cost |  | 0 | 0 | 0 |
Contributions from plan members |  | 0 | 0 | 0 |
Pre-funded pension obligations |  |  | 66 | 99 |
Expense recognized directly in profit or loss |  | (1) | (5) | (13) |
End of period |  | 103 | (61) | (95) |
Remeasurement of net defined-benefit (asset)/ liability (actuarial gains and losses) |  | 212 | 44 | 130 |
Pensions and other post-employment benefits | Present value of defined benefit obligation |  |  |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |  |  |
Beginning of period |  | 8,930 | 8,651 | 12,175 |
Current service cost |  | 138 | 140 | 193 |
Interest (income)/cost |  | 335 | 346 | 206 |
Actuarial losses/(gains) due to changes in demographic assumptions |  | (45) | (34) | (219) |
Actuarial losses/(gains) due to changes in financial assumptions |  | (380) | 157 | (3,006) |
Actuarial losses/(gains) due to experience adjustments |  | (4) | 256 | 177 |
Plan amendments, curtailments or settlements not specified in the terms of the plan | [3] | (181) | (36) | (229) |
Plan settlements specified in the terms of the plan |  | (59) | (40) | (84) |
Benefits paid |  | (502) | (483) | (463) |
Changes in scope of consolidation and transfers |  | 4 | (14) | (114) |
Currency translation differences |  | 181 | (13) | 15 |
Increase (decrease) in net defined benefit liability (asset) resulting from reclassification, net defined benefit liability (asset) |  | (188) | 0 | 0 |
End of period |  | 8,229 | 8,930 | 8,651 |
Pensions and other post-employment benefits | Plan assets |  |  |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |  |  |
Beginning of period |  | (6,993) | (6,899) | (9,651) |
Interest (income)/cost |  | (271) | (276) | (163) |
Plan amendments, curtailments or settlements not specified in the terms of the plan |  | 71 | 17 | 161 |
Plan settlements specified in the terms of the plan |  | 58 | 40 | 84 |
Changes in scope of consolidation and transfers |  | 20 | 8 | 32 |
Currency translation differences |  | (132) | (11) | 52 |
Increase (decrease) in net defined benefit liability (asset) resulting from reclassification, net defined benefit liability (asset) |  | 97 | 0 | 0 |
Difference between actual return and interest income on plan assets(c) | [4] | (416) | 197 | (2,398) |
Administration costs and taxes paid during the period |  | (13) | (7) | (6) |
Contributions from plan members |  | 5 | 6 | 6 |
Employer’s contributions |  | 127 | 122 | 238 |
Benefits paid |  | (456) | (446) | (426) |
End of period |  | (6,397) | (6,993) | (6,899) |
Pensions and other post-employment benefits | Plan assets | UK |  |  |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |  |  |
Difference between actual return and interest income on plan assets(c) |  | (204) |  |  |
Pensions and other post-employment benefits | Effect of asset ceiling |  |  |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |  |  |
Beginning of period |  | 6 | 18 |  |
End of period |  | 4 | 6 | 18 |
Provisions for pensions and other post-employment benefits |  |  |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |  |  |
Obligations provided for |  | 1,992 | 2,214 | 2,039 | € 2,947
Provisions for pensions and other post-employment benefits | Pensions and other post-employment benefits |  |  |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |  |  |
Obligations provided for |  | € 1,992 | € 2,214 | € 2,039 |
[1] | (d) Benefit cost for the total Group including Opella on all the periods
[2] | (a)For 2023, this line includes €66 million of assets in the United Kingdom (versus €99 million for 2022); those amounts are not subject to any asset ceiling, in accordance with IFRIC 14.
[3] | (b)Amounts recognized in Other comprehensive income (see Note D.15.7.).
[4] | (c)In 2024, this line includes the effects of the partial buy-in in the United Kingdom for €(204) million.

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- Definition The decrease (increase) in a net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in demographic assumptions that result in remeasurements of the net defined benefit liability (asset). Demographic assumptions deal with matters such as: (a) mortality; (b) rates of employee turnover, disability and early retirement; (c) the proportion of plan members with dependants who will be eligible for benefits; (d) the proportion of plan members who will select each form of payment option available under the plan terms; and (e) claim rates under medical plans. [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2023-01-01 -Paragraph 141 -Subparagraph c -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_141_c_ii&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The decrease (increase) in a net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in financial assumptions that result in remeasurements of the net defined benefit liability (asset). Financial assumptions deal with items such as: (a) the discount rate; (b) benefit levels, excluding any cost of the benefits to be met by employees, and future salary; (c) in the case of medical benefits, future medical costs, including claim handling costs (ie the costs that will be incurred in processing and resolving claims, including legal and adjuster's fees); and (d) taxes payable by the plan on contributions relating to service before the reporting date or on benefits resulting from that service. [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2023-01-01 -Paragraph 141 -Subparagraph c -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_141_c_iii&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The decrease (increase) in a net defined benefit liability (asset) resulting from actuarial gains (losses) arising from experience adjustments that result in remeasurements of the net defined benefit liability (asset). Experience adjustments deal with the effects of differences between the previous actuarial assumptions and what has actually occurred. [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2023-01-01 -Paragraph 141 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_141_c&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of benefits paid or payable for retirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 26 -IssueDate 2023-01-01 -Paragraph 35 -Subparagraph b -Clause v -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2023-en-r&anchor=para_35_b_v&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The decrease (increase) in net defined benefit liability (asset) resulting from contributions to a defined benefit plan by the employer. [Refer: Net defined benefit liability (asset); Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2023-01-01 -Paragraph 141 -Subparagraph f -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_141_f&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The decrease (increase) in the net defined benefit liability (asset) resulting from contributions to a defined benefit plan by plan participants. [Refer: Net defined benefit liability (asset); Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2023-01-01 -Paragraph 141 -Subparagraph f -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_141_f&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The increase (decrease) in the net defined benefit liability (asset) resulting from employee service in the current period. [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2023-01-01 -Paragraph 141 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_141_a&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The decrease (increase) in a net defined benefit liability (asset) resulting from the remeasurement of that net defined benefit liability (asset). [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2023-01-01 -Paragraph 141 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_141_c&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The increase (decrease) in the net defined benefit liability (asset) resulting from changes in foreign exchange rates. [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2023-01-01 -Paragraph 141 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_141_e&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The increase (decrease) in the net defined benefit liability (asset) resulting from the passage of time. [Refer: Interest expense; Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2023-01-01 -Paragraph 141 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_141_b&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of deficit or surplus in a defined benefit plan, adjusted for any effect of limiting a net defined benefit asset to the asset ceiling. [Refer: Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2023-01-01 -Paragraph 140 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_140_a&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of non-current provisions, including provisions for employee benefits. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 54 -Subparagraph l -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_54_l&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The decrease (increase) in the net defined benefit liability (asset) resulting from payments from the plan. [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2023-01-01 -Paragraph 141 -Subparagraph g -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_141_g&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The decrease (increase) in the net defined benefit liability (asset) resulting from the return on plan assets, excluding amounts included in interest income or expense. The return on plan assets is interest, dividends and other revenue derived from the plan assets, together with realised and unrealised gains or losses on the plan assets, less any costs of managing plan assets and less any tax payable by the plan itself, other than tax included in the actuarial assumptions used to measure the present value of the defined benefit obligation. [Refer: Plan assets [member]; Net defined benefit liability (asset); Actuarial assumptions [member]; Increase (decrease) in net defined benefit liability (asset) resulting from interest expense (income)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2023-01-01 -Paragraph 141 -Subparagraph c -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_141_c_i&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition Decrease (Increase) In Net Defined Benefit Liability (Asset) Resulting From Payments In Respect Of Settlements Specified In The Terms Of The Plan + References No definition available. + Details
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