Statement Of Cash Flows [Abstract]
| Concept |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
As at 2018-12-31 |
|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||||
| Cash flows from (used in) operating activities [abstract] | |||||||
| Cash flows from (used in) operations | — |
4,390,000,000
EUR
|
— |
1,727,000,000
EUR
|
359,000,000
EUR
|
— | — |
| Dividends received, classified as operating activities | — |
14,000,000
EUR
|
— |
4,000,000
EUR
|
12,000,000
EUR
|
— | — |
| Interest paid, classified as operating activities | — |
151,000,000
EUR
|
— |
148,000,000
EUR
|
171,000,000
EUR
|
— | — |
| Interest received, classified as operating activities | — |
17,000,000
EUR
|
— |
13,000,000
EUR
|
25,000,000
EUR
|
— | — |
| Income taxes paid (refund), classified as operating activities | — |
249,000,000
EUR
|
— |
390,000,000
EUR
|
354,000,000
EUR
|
— | — |
| Cash flows from (used in) investing activities [abstract] | |||||||
| Cash flows from losing control of subsidiaries or other businesses, classified as investing activities | — |
107,000,000
EUR
|
— |
4,000,000
EUR
|
146,000,000
EUR
|
— | — |
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities | — |
3,098,000,000
EUR
|
— |
317,000,000
EUR
|
252,000,000
EUR
|
— | — |
| Other cash receipts from sales of equity or debt instruments of other entities, classified as investing activities | — |
124,000,000
EUR
|
— |
65,000,000
EUR
|
162,000,000
EUR
|
— | — |
| Other cash payments to acquire equity or debt instruments of other entities, classified as investing activities | — |
124,000,000
EUR
|
— |
131,000,000
EUR
|
63,000,000
EUR
|
— | — |
| Proceeds from sales of property, plant and equipment, classified as investing activities | — |
33,000,000
EUR
|
— |
19,000,000
EUR
|
60,000,000
EUR
|
— | — |
| Purchase of property, plant and equipment, classified as investing activities | — |
397,000,000
EUR
|
— |
485,000,000
EUR
|
486,000,000
EUR
|
— | — |
| Purchase of intangible assets, classified as investing activities | — |
107,000,000
EUR
|
— |
114,000,000
EUR
|
138,000,000
EUR
|
— | — |
| Cash flows from (used in) financing activities [abstract] | |||||||
| Payments to acquire or redeem entity's shares | — |
1,636,000,000
EUR
|
— |
343,000,000
EUR
|
1,376,000,000
EUR
|
— | — |
| Proceeds from borrowings, classified as financing activities | — |
76,000,000
EUR
|
— |
1,065,000,000
EUR
|
847,000,000
EUR
|
— | — |
| Repayments of borrowings, classified as financing activities | — |
302,000,000
EUR
|
— |
298,000,000
EUR
|
756,000,000
EUR
|
— | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — |
986,000,000
EUR
|
— |
1,856,000,000
EUR
|
262,000,000
EUR
|
— | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||||
| Effect of exchange rate changes on cash and cash equivalents | — |
65,000,000
EUR
|
— |
55,000,000
EUR
|
2,000,000
EUR
|
— | — |
| Cash and cash equivalents |
2,303,000,000
EUR
|
— |
3,226,000,000
EUR
|
— | — |
1,425,000,000
EUR
|
1,688,000,000
EUR
|