PENSIONS AND OTHER POST-EMPLOYMENT BENEFIT OBLIGATIONS - Sensitivity Analysis on Defined Benefit Obligations (Details) - Actuarial assumption of discount rates € in Millions	Dec. 31, 2022 EUR (€)
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Increase in actuarial assumption	0.50%
50 bp increase in discount rates	€ (46)
50 bp decrease in discount rates	52
France
Disclosure of sensitivity analysis for actuarial assumptions [line items]
50 bp increase in discount rates	(6)
50 bp decrease in discount rates	7
Germany
Disclosure of sensitivity analysis for actuarial assumptions [line items]
50 bp increase in discount rates	(5)
50 bp decrease in discount rates	5
Switzerland
Disclosure of sensitivity analysis for actuarial assumptions [line items]
50 bp increase in discount rates	(16)
50 bp decrease in discount rates	17
United States
Disclosure of sensitivity analysis for actuarial assumptions [line items]
50 bp increase in discount rates	(19)
50 bp decrease in discount rates	€ 23

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- Definition

The increase (decrease) in a defined benefit obligation that would have been caused by a decrease in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [member]]

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The increase (decrease) in a defined benefit obligation that would have been caused by an increase in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [member]]

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- Definition

The reasonably possible percentage of the increase in the actuarial assumption used to determine the present value of defined benefit obligation. [Refer: Actuarial assumptions [member]]

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