Statement Of Cash Flows [Abstract]
| Concept |
2020-01-01 to 2020-12-31 |
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 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
2019-01-01 to 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||||||||||||||
| Cash flows from (used in) operating activities [abstract] | ||||||||||||||||
| Profit (loss) |
-
EUR
|
— |
1,389,000,000
EUR
|
-
EUR
|
136,000,000
EUR
|
-
EUR
|
1,253,000,000
EUR
|
1,389,000,000
EUR
|
-
EUR
|
3,679,000,000
EUR
|
-
EUR
|
3,926,000,000
EUR
|
3,926,000,000
EUR
|
247,000,000
EUR
|
— |
-
EUR
|
| Adjustments to reconcile profit (loss) [abstract] | ||||||||||||||||
| Adjustments for depreciation and amortisation expense | — | — |
3,629,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
3,052,000,000
EUR
|
— | — | — |
| Other adjustments for which cash effects are investing or financing cash flow | — | — |
1,401,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
1,349,000,000
EUR
|
— | — | — |
| Income taxes paid (refund), classified as operating activities | — | — |
1,613,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
1,924,000,000
EUR
|
— | — | — |
| Cash flows from (used in) operating activities | — | — |
8,091,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
8,204,000,000
EUR
|
— | — | — |
| Cash flows from (used in) investing activities [abstract] | ||||||||||||||||
| Cash flows from losing control of subsidiaries or other businesses, classified as investing activities | — | — |
45,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
79,000,000
EUR
|
— | — | — |
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities | — | — |
208,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
699,000,000
EUR
|
— | — | — |
| Proceeds from sales of other long-term assets, classified as investing activities | — | — |
295,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
128,000,000
EUR
|
— | — | — |
| Purchase of other long-term assets, classified as investing activities | — | — |
252,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
183,000,000
EUR
|
— | — | — |
| Dividends received, classified as investing activities | — | — |
1,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
13,000,000
EUR
|
— | — | — |
| Cash flows from (used in) investing activities | — | — |
975,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
1,942,000,000
EUR
|
— | — | — |
| Cash flows from (used in) financing activities [abstract] | ||||||||||||||||
| Proceeds from issuing shares | — | — |
27,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
31,000,000
EUR
|
— | — | — |
| Proceeds from borrowings, classified as financing activities | — | — |
7,905,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
7,199,000,000
EUR
|
— | — | — |
| Repayments of borrowings, classified as financing activities | — | — |
1 123,5
EUR
|
— | — | — | — | — | — | — | — | — |
6,085,000,000
EUR
|
— | — | — |
| Dividends paid, classified as financing activities | — | — |
318,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
973,000,000
EUR
|
— | — | — |
| Cash flows from (used in) financing activities | — | — |
5,607,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
1,936,000,000
EUR
|
— | — | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||||||||||||||
| Effect of exchange rate changes on cash and cash equivalents | — | — |
296,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
15,000,000
EUR
|
— | — | — |
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes | — | — |
1,213,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
4,311,000,000
EUR
|
— | — | — |
| Cash and cash equivalents | — |
1 594,5
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
1 477,8
EUR
|
— |