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OPERATING SEGMENT INFORMATION - Segment Revenue (Details) - EUR (€) € in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Disclosure of operating segments [line items] |  |  |  |
Revenue | € 1,795 | € 1,950 | € 3,526 | € 3,906
P&ARP |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Revenue | 999 | 1,045 | 1,933 | 2,070
A&T |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Revenue | 439 | 462 | 870 | 909
AS&I |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Revenue | 356 | 443 | 720 | 926
H&C |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Revenue | 2 | 0 | 3 | 1
Segment revenue |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Revenue | 1,812 | 1,956 | 3,556 | 3,922
Segment revenue | P&ARP |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Revenue | 1,001 | 1,049 | 1,939 | 2,079
Segment revenue | A&T |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Revenue | 452 | 464 | 893 | 916
Segment revenue | AS&I |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Revenue | 357 | 443 | 721 | 926
Segment revenue | H&C |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Revenue | 2 | 0 | 3 | 1
Inter-segment elimination |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Revenue | (17) | (6) | (30) | (16)
Inter-segment elimination | P&ARP |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Revenue | (2) | (4) | (6) | (9)
Inter-segment elimination | A&T |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Revenue | (13) | (2) | (23) | (7)
Inter-segment elimination | AS&I |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Revenue | (1) | 0 | (1) | 0
Inter-segment elimination | H&C |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Revenue | € 0 | € 0 | € 0 | € 0

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- Definition The amount of revenue from contracts with customers. A customer is a party that has contracted with an entity to obtain goods or services that are an output of the entity’s ordinary activities in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2023-01-01 -Paragraph 114 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_114&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2023-01-01 -Paragraph 113 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_113_a&doctype=Standard -URIDate 2023-03-23 + Details
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