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PENSIONS AND OTHER POST-EMPLOYMENT BENEFIT OBLIGATIONS - Amounts Recognized in the Consolidated Statement of Financial Position (Details) - EUR (€) € in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosure of net defined benefit liability (asset) [line items]
Present value of funded obligation	€ 614	€ 766
Fair value of plan assets	(461)	(544)
Deficit of funded plans	153	222
Present value of unfunded obligation	250	377
Net liability / (asset) arising from defined benefit obligation	403	599
Pension Benefits
Disclosure of net defined benefit liability (asset) [line items]
Present value of funded obligation	614	766
Fair value of plan assets	(461)	(544)
Deficit of funded plans	153	222
Present value of unfunded obligation	96	128
Net liability / (asset) arising from defined benefit obligation	249	350
Other Benefits
Disclosure of net defined benefit liability (asset) [line items]
Present value of funded obligation	0	0
Fair value of plan assets	0	0
Deficit of funded plans	0	0
Present value of unfunded obligation	154	249
Net liability / (asset) arising from defined benefit obligation	€ 154	€ 249

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- Definition

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- Definition

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- Definition

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- Definition

The amount of non-current net defined benefit liability. [Refer: Net defined benefit liability]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
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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
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-Number 19
-IssueDate 2022-03-24
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- Definition

The fair value of any plan assets, less the present value of the defined benefit obligation. [Refer: Plan assets [member]]

+ References

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