Statement Of Cash Flows [Abstract]
| Concept |
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 |
As at 2020-01-01 |
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 |
As at 2019-01-01 |
|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||||||||
| Cash flows from (used in) operating activities [abstract] | ||||||||||
| Profit (loss) | — |
9,392,000,000
EUR
|
9,473,000,000
EUR
|
81,000,000
EUR
|
— |
9,386,000,000
EUR
|
73,000,000
EUR
|
— |
9,313,000,000
EUR
|
— |
| Cash flows from (used in) operations | — | — |
1 907,5
EUR
|
— | — |
1 549,6
EUR
|
— | — | — | — |
| Dividends received, classified as operating activities | — | — |
80,000,000
EUR
|
— | — |
59,000,000
EUR
|
— | — | — | — |
| Interest paid, classified as operating activities | — | — |
190,000,000
EUR
|
— | — |
161,000,000
EUR
|
— | — | — | — |
| Interest received, classified as operating activities | — | — |
306,000,000
EUR
|
— | — |
392,000,000
EUR
|
— | — | — | — |
| Income taxes paid (refund), classified as operating activities | — | — |
3,332,000,000
EUR
|
— | — |
2,872,000,000
EUR
|
— | — | — | — |
| Other inflows (outflows) of cash, classified as operating activities | — | — |
437,000,000
EUR
|
— | — |
217,000,000
EUR
|
— | — | — | — |
| Cash flows from (used in) operating activities | — | — |
1 550,2
EUR
|
— | — |
1 269,7
EUR
|
— | — | — | — |
| Cash flows from (used in) investing activities [abstract] | ||||||||||
| Cash flows from losing control of subsidiaries or other businesses, classified as investing activities | — | — |
-
EUR
|
— | — |
32,000,000
EUR
|
— | — | — | — |
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities | — | — |
269,000,000
EUR
|
— | — |
270,000,000
EUR
|
— | — | — | — |
| Proceeds from sales of property, plant and equipment, classified as investing activities | — | — |
51,000,000
EUR
|
— | — | — | — | — | — | — |
| Purchase of property, plant and equipment, classified as investing activities | — | — |
880,000,000
EUR
|
— | — |
980,000,000
EUR
|
— | — | — | — |
| Cash flows from (used in) investing activities | — | — |
1,098,000,000
EUR
|
— | — |
1,218,000,000
EUR
|
— | — | — | — |
| Cash flows from (used in) financing activities [abstract] | ||||||||||
| Payments from changes in ownership interests in subsidiaries that do not result in loss of control | — | — |
38,000,000
EUR
|
— | — |
37,000,000
EUR
|
— | — | — | — |
| Proceeds from issuing other equity instruments | — | — | — | — | — |
375,000,000
EUR
|
— | — | — | — |
| Dividends paid, classified as financing activities | — | — |
8,805,000,000
EUR
|
— | — |
8,517,000,000
EUR
|
— | — | — | — |
| Cash flows from (used in) financing activities | — | — |
1 624,5
EUR
|
— | — |
1 134,7
EUR
|
— | — | — | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — | — |
1,841,000,000
EUR
|
— | — |
132,000,000
EUR
|
— | — | — | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||||||||
| Effect of exchange rate changes on cash and cash equivalents | — | — |
204,000,000
EUR
|
— | — |
132,000,000
EUR
|
— | — | — | — |
| Cash and cash equivalents |
4,579,000,000
EUR
|
— | — | — |
6,624,000,000
EUR
|
— | — |
6,624,000,000
EUR
|
— |
6,360,000,000
EUR
|