Statement Of Cash Flows [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 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 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||||||||
| Cash flows from (used in) operating activities [abstract] | |||||||||||
| Profit (loss) |
171,000,000
EUR
|
— |
845,000,000
EUR
|
845,000,000
EUR
|
1,016,000,000
EUR
|
— |
1,300,000,000
EUR
|
159,000,000
EUR
|
1,141,000,000
EUR
|
1,141,000,000
EUR
|
— |
| Adjustments to reconcile profit (loss) [abstract] | |||||||||||
| Adjustments for depreciation and amortisation expense | — | — | — | — |
833,000,000
EUR
|
— |
854,000,000
EUR
|
— | — | — | — |
| Adjustments for impairment loss (reversal of impairment loss) recognised in profit or loss | — | — | — | — |
41,000,000
EUR
|
— |
172,000,000
EUR
|
— | — | — | — |
| Adjustments for provisions | — | — | — | — |
15,000,000
EUR
|
— |
36,000,000
EUR
|
— | — | — | — |
| Adjustments for share-based payments | — | — | — | — |
7,000,000
EUR
|
— |
3,000,000
EUR
|
— | — | — | — |
| Adjustments to reconcile profit (loss) | — | — | — | — |
209,000,000
EUR
|
— |
87,000,000
EUR
|
— | — | — | — |
| Dividends received, classified as operating activities | — | — | — | — |
219,000,000
EUR
|
— |
169,000,000
EUR
|
— | — | — | — |
| Interest paid, classified as operating activities | — | — | — | — |
142,000,000
EUR
|
— |
132,000,000
EUR
|
— | — | — | — |
| Interest received, classified as operating activities | — | — | — | — |
1,840,000,000
EUR
|
— |
1,909,000,000
EUR
|
— | — | — | — |
| Income taxes paid (refund), classified as operating activities | — | — | — | — |
263,000,000
EUR
|
— |
205,000,000
EUR
|
— | — | — | — |
| Cash flows from (used in) operating activities | — | — | — | — |
1,065,000,000
EUR
|
— |
1,329,000,000
EUR
|
— | — | — | — |
| Cash flows from (used in) investing activities [abstract] | |||||||||||
| Proceeds from sales of property, plant and equipment, classified as investing activities | — | — | — | — |
24,000,000
EUR
|
— |
7,000,000
EUR
|
— | — | — | — |
| Purchase of property, plant and equipment, classified as investing activities | — | — | — | — |
50,000,000
EUR
|
— |
262,000,000
EUR
|
— | — | — | — |
| Proceeds from sales of intangible assets, classified as investing activities | — | — | — | — | — | — |
2,000,000
EUR
|
— | — | — | — |
| Purchase of intangible assets, classified as investing activities | — | — | — | — |
97,000,000
EUR
|
— |
96,000,000
EUR
|
— | — | — | — |
| Cash flows from (used in) investing activities | — | — | — | — |
1,439,000,000
EUR
|
— |
635,000,000
EUR
|
— | — | — | — |
| Cash flows from (used in) financing activities [abstract] | |||||||||||
| Payments to acquire or redeem entity's shares | — | — | — | — |
56,000,000
EUR
|
— |
131,000,000
EUR
|
— | — | — | — |
| Cash flows from (used in) financing activities | — | — | — | — |
684,000,000
EUR
|
— |
804,000,000
EUR
|
— | — | — | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||||||||
| Effect of exchange rate changes on cash and cash equivalents | — | — | — | — |
6,000,000
EUR
|
— |
6,000,000
EUR
|
— | — | — | — |
| Cash and cash equivalents | — |
1,937,000,000
EUR
|
— | — | — |
2,241,000,000
EUR
|
— | — | — | — |
3,745,000,000
EUR
|