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 |
2019-01-01 to 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||||||||||
| Cash flows from (used in) operating activities [abstract] | ||||||||||||
| Profit (loss) |
67,000,000
EUR
|
— |
2,426,000,000
EUR
|
2,426,000,000
EUR
|
2,493,000,000
EUR
|
— |
2,096,000,000
EUR
|
75,000,000
EUR
|
2,021,000,000
EUR
|
2,021,000,000
EUR
|
— |
2,096,000,000
EUR
|
| Adjustments to reconcile profit (loss) [abstract] | ||||||||||||
| Adjustments for income tax expense | — | — | — | — |
1,079,000,000
EUR
|
— |
730,000,000
EUR
|
— | — | — | — | — |
| Adjustments for decrease (increase) in inventories | — | — | — | — |
169,000,000
EUR
|
— |
553,000,000
EUR
|
— | — | — | — | — |
| Adjustments for unrealised foreign exchange losses (gains) | — | — | — | — |
4,000,000
EUR
|
— |
32,000,000
EUR
|
— | — | — | — | — |
| Adjustments for losses (gains) on disposal of non-current assets | — | — | — | — |
64,000,000
EUR
|
— |
32,000,000
EUR
|
— | — | — | — | — |
| Income taxes paid (refund), classified as operating activities | — | — | — | — |
914,000,000
EUR
|
— |
602,000,000
EUR
|
— | — | — | — | — |
| Cash flows from (used in) operating activities | — | — | — | — |
6,415,000,000
EUR
|
— |
6,096,000,000
EUR
|
— | — | — | — | — |
| Cash flows from (used in) investing activities [abstract] | ||||||||||||
| Cash flows from (used in) investing activities | — | — | — | — |
2,715,000,000
EUR
|
— |
2,464,000,000
EUR
|
— | — | — | — | — |
| Cash flows from (used in) financing activities [abstract] | ||||||||||||
| Proceeds from changes in ownership interests in subsidiaries that do not result in loss of control | — | — | — | — |
—
EUR
|
— |
—
EUR
|
— | — | — | — | — |
| Payments to acquire or redeem entity's shares | — | — | — | — |
2,211,000,000
EUR
|
— |
—
EUR
|
— | — | — | — | — |
| Interest paid, classified as financing activities | — | — | — | — |
314,000,000
EUR
|
— |
316,000,000
EUR
|
— | — | — | — | — |
| Cash flows from (used in) financing activities | — | — | — | — |
3,515,000,000
EUR
|
— |
892,000,000
EUR
|
— | — | — | — | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — | — | — | — |
185,000,000
EUR
|
— |
2,740,000,000
EUR
|
— | — | — | — | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||||||||||
| Effect of exchange rate changes on cash and cash equivalents | — | — | — | — |
—
EUR
|
— |
171,000,000
EUR
|
— | — | — | — | — |
| Cash and cash equivalents | — |
4,946,000,000
EUR
|
— | — | — |
4,762,000,000
EUR
|
— | — | — | — |
2,192,000,000
EUR
|
— |