Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2020-12-31 |
|---|---|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||||
| Property, plant and equipment [abstract] | |||||
| Property, plant and equipment |
355,000,000
EUR
|
— |
375,000,000
EUR
|
— | — |
| Intangible assets and goodwill [abstract] | |||||
| Intangible assets and goodwill |
3,494,000,000
EUR
|
— |
3,794,000,000
EUR
|
— | — |
| Investment property [abstract] | |||||
| Investment property |
166,000,000
EUR
|
— |
568,000,000
EUR
|
— | — |
| Investments accounted for using equity method [abstract] | |||||
| Investments in associates accounted for using equity method |
16,000,000
EUR
|
— |
777,000,000
EUR
|
— | — |
| Cash and cash equivalents [abstract] | |||||
| Cash [abstract] | |||||
| Cash |
2,907,000,000
EUR
|
— |
4,736,000,000
EUR
|
— | — |
| Cash equivalents [abstract] | |||||
| Short-term deposits, classified as cash equivalents | — |
166,000,000
EUR
|
— |
83,000,000
EUR
|
— |
| Cash and cash equivalents |
3,073,000,000
EUR
|
— |
4,819,000,000
EUR
|
— |
2,520,000,000
EUR
|
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [abstract] | |||||
| Non-current assets or disposal groups classified as held for sale |
—
EUR
|
— |
2,385,000,000
EUR
|
— | — |
| Miscellaneous assets [abstract] | |||||
| Other assets |
3,242,000,000
EUR
|
— |
2,977,000,000
EUR
|
— | — |
| Miscellaneous liabilities [abstract] | |||||
| Net defined benefit liability |
25,000,000
EUR
|
— |
26,000,000
EUR
|
— | — |
| Subordinated liabilities [abstract] | |||||
| Subordinated liabilities |
1,983,000,000
EUR
|
— |
2,016,000,000
EUR
|
— | — |
| Other liabilities |
2,031,000,000
EUR
|
— |
2,246,000,000
EUR
|
— | — |
| Issued capital [abstract] | |||||
| Issued capital |
98,000,000
EUR
|
— |
98,000,000
EUR
|
— | — |
| Retained earnings [abstract] | |||||
| Retained earnings |
7,784,000,000
EUR
|
— |
9,952,000,000
EUR
|
— | — |
| Net assets (liabilities) [abstract] | |||||
| Assets |
42,033,000,000
EUR
|
— |
61,061,000,000
EUR
|
— | — |
| Liabilities |
32,490,000,000
EUR
|
— |
47,597,000,000
EUR
|
— | — |
| Assets less current liabilities [abstract] |