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PENSION AND OTHER POST-EMPLOYMENT BENEFIT OBLIGATIONS - Net Defined Benefit Obligations by Country (Details) € in Millions, $ in Millions | Dec. 31, 2023 EUR (€) | Dec. 31, 2022 EUR (€) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 EUR (€)
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Disclosure of net defined benefit liability (asset) [line items] |  |  |  |
Defined benefit obligations | € 899 | € 864 |  |
Plan assets | (488) | (461) |  |
Net defined benefit liability | 411 | 403 | $ 403 | € 599
France |  |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |  |
Defined benefit obligations | 127 | 117 |  |
Plan assets | (6) | (6) |  |
Net defined benefit liability | 121 | 111 |  |
Germany |  |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |  |
Defined benefit obligations | 103 | 100 |  |
Plan assets | (1) | (1) |  |
Net defined benefit liability | 102 | 99 |  |
Switzerland |  |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |  |
Defined benefit obligations | 290 | 249 |  |
Plan assets | (265) | (236) |  |
Net defined benefit liability | 25 | 13 |  |
United States |  |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |  |
Defined benefit obligations | 379 | 398 |  |
Plan assets | (216) | (218) |  |
Net defined benefit liability | € 163 | € 180 |  |

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- Definition Defined benefit obligation. + References No definition available. + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + 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 fair value of defined benefit plan assets. Plan assets comprise assets held by a long-term employee benefit fund and qualifying insurance policies. [Refer: At fair value [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2023-01-01 -Paragraph 57 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_57_a&doctype=Standard -URIDate 2023-03-23 + Details
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- Details
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