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PENSIONS AND OTHER POST-EMPLOYMENT BENEFIT OBLIGATIONS - Amounts Recognized in the Consolidated Income Statement (Details) - EUR (€) € in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Disclosure of defined benefit plans [line items] |  |  |  |
Current service cost | € (5) | € (5) | € (10) | € (10)
Net interest | (5) | (4) | (8) | (8)
Immediate recognition of gains arising over the year | 1 | 0 | 1 | 0
Administration expenses | 0 | 0 | (1) | (1)
Total | (9) | (9) | (18) | (19)
Pension Benefits |  |  |  |
Disclosure of defined benefit plans [line items] |  |  |  |
Current service cost | (4) | (3) | (8) | (7)
Net interest | (3) | (3) | (4) | (5)
Immediate recognition of gains arising over the year | 0 | 0 | 0 | 0
Administration expenses | 0 | 0 | (1) | (1)
Total | (7) | (6) | (13) | (13)
Other Benefits |  |  |  |
Disclosure of defined benefit plans [line items] |  |  |  |
Current service cost | (1) | (2) | (2) | (3)
Net interest | (2) | (1) | (4) | (3)
Immediate recognition of gains arising over the year | 1 | 0 | 1 | 0
Administration expenses | 0 | 0 | 0 | 0
Total | € (2) | € (3) | € (5) | € (6)

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- Definition Immediate recognition actuarial gains (losses) arising from change in assumption recognized in profit (loss). + References No definition available. + Details
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- Definition The amount of expenses that the entity classifies as being administrative. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 26 -IssueDate 2023-01-01 -Paragraph 35 -Subparagraph b -Clause vi -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2023-en-r&anchor=para_35_b_vi&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 103 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_103&doctype=Standard -URIDate 2023-03-23 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 99 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_99&doctype=Standard -URIDate 2023-03-23 + Details
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