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PROPERTY, PLANT AND EQUIPMENT - Narrative (Details)
€ in Millions
 12 Months Ended
Dec. 31, 2022
EUR (€)
Dec. 31, 2021
EUR (€)
Dec. 31, 2020
EUR (€)
cash_generating_unit
Disclosure of detailed information about property, plant and equipment [line items]      
Expense related to short-term leases, low value asset leases and variable lease still recognized as operating expenses € 15 € 12 € 11
Property, plant and equipment € 2,017 € 1,948 € 1,906
A&T      
Disclosure of detailed information about property, plant and equipment [line items]      
Number of cash generating units impaired | cash_generating_unit     2
Impairment charges related to cash-generating units     € 16
A&T | Montreuil Juigné      
Disclosure of detailed information about property, plant and equipment [line items]      
Impairment charges related to cash-generating units     9
A&T | Ussel      
Disclosure of detailed information about property, plant and equipment [line items]      
Impairment charges related to cash-generating units     € 7
AS&I      
Disclosure of detailed information about property, plant and equipment [line items]      
Number of cash generating units impaired | cash_generating_unit     2
Discount rate to estimate normative cash flows     9.00%
AS&I | Nanjing Plant      
Disclosure of detailed information about property, plant and equipment [line items]      
Impairment charges related to cash-generating units     € 12
AS&I | White Georgia      
Disclosure of detailed information about property, plant and equipment [line items]      
Impairment charges related to cash-generating units     13
Property, plant and equipment     € 11