Statement Of Comprehensive Income [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||
| Profit (loss) |
171,000,000
EUR
|
— |
845,000,000
EUR
|
— | — |
845,000,000
EUR
|
1,016,000
EUR
|
1,300,000
EUR
|
— |
159,000,000
EUR
|
1,141,000
EUR
|
— | — |
1,141,000
EUR
|
| Other comprehensive income [abstract] | ||||||||||||||
| Components of other comprehensive income that will not be reclassified to profit or loss, net of tax [abstract] | ||||||||||||||
| Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans |
18,000,000
EUR
|
79,000,000
EUR
|
— | — | — |
79,000,000
EUR
|
97,000,000
EUR
|
54,000,000
EUR
|
— |
12,000,000
EUR
|
42,000,000
EUR
|
42,000,000
EUR
|
— | — |
| Other comprehensive income that will not be reclassified to profit or loss, net of tax | — | — | — | — | — | — |
97,000,000
EUR
|
54,000,000
EUR
|
— | — | — | — | — | — |
| Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract] | ||||||||||||||
| Exchange differences on translation [abstract] | ||||||||||||||
| Other comprehensive income, net of tax, exchange differences on translation of foreign operations |
1,000,000
EUR
|
— | — |
290,000,000
EUR
|
— |
290,000,000
EUR
|
291,000,000
EUR
|
356,000,000
EUR
|
355,000,000
EUR
|
1,000,000
EUR
|
355,000,000
EUR
|
— | — | — |
| Available-for-sale financial assets [abstract] | ||||||||||||||
| Other comprehensive income, net of tax, available-for-sale financial assets | — | — | — | — | — | — |
137,000,000
EUR
|
44,000,000
EUR
|
— | — | — | — | — | — |
| Financial assets measured at fair value through other comprehensive income [abstract] | ||||||||||||||
| Other comprehensive income, net of tax, financial assets measured at fair value through other comprehensive income |
7,000,000
EUR
|
— | — | — |
296,000,000
EUR
|
296,000,000
EUR
|
303,000,000
EUR
|
191,000,000
EUR
|
— |
21,000,000
EUR
|
212,000,000
EUR
|
— |
212,000,000
EUR
|
— |
| Share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss, net of tax | — | — | — | — | — | — |
168,000,000
EUR
|
144,000,000
EUR
|
— | — | — | — | — | — |
| Other comprehensive income that will be reclassified to profit or loss, net of tax | — | — | — | — | — | — |
12,000,000
EUR
|
165,000,000
EUR
|
— | — | — | — | — | — |
| Other comprehensive income | — | — | — | — | — | — |
85,000,000
EUR
|
219,000,000
EUR
|
— | — | — | — | — | — |
| Comprehensive income |
183,000,000
EUR
|
79,000,000
EUR
|
845,000,000
EUR
|
290,000,000
EUR
|
296,000,000
EUR
|
918,000,000
EUR
|
1,101,000
EUR
|
1,081,000
EUR
|
355,000,000
EUR
|
125,000,000
EUR
|
956,000,000
EUR
|
42,000,000
EUR
|
212,000,000
EUR
|
1,141,000
EUR
|
| Comprehensive income attributable to [abstract] | ||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — | — | — |
918,000,000
EUR
|
956,000,000
EUR
|
— | — | — | — | — | — |
| Comprehensive income, attributable to non-controlling interests | — | — | — | — | — | — |
183,000,000
EUR
|
125,000,000
EUR
|
— | — | — | — | — | — |