Statement Of Cash Flows [Abstract]
| Concept |
As at 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2019-04-01 to 2020-03-31 |
As at 2020-03-31 |
2019-04-01 to 2020-03-31 |
2019-04-01 to 2020-03-31 |
2019-04-01 to 2020-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||||||||
| Cash flows from (used in) operating activities [abstract] | ||||||||||
| Profit (loss) | — |
4,153,000,000
EUR
|
4,160,000,000
EUR
|
7,000,000
EUR
|
4,153,000,000
EUR
|
5,000,000
EUR
|
— |
4,310,000,000
EUR
|
4,310,000,000
EUR
|
4,315,000,000
EUR
|
| Adjustments to reconcile profit (loss) [abstract] | ||||||||||
| Adjustments for decrease (increase) in inventories | — | — |
1,188,000,000
EUR
|
— | — | — | — | — | — |
53,000,000
EUR
|
| Other adjustments to reconcile profit (loss) | — | — |
29,000,000
EUR
|
— | — | — | — | — | — |
47,000,000
EUR
|
| Dividends received, classified as operating activities | — | — |
12,000,000
EUR
|
— | — | — | — | — | — |
105,000,000
EUR
|
| Interest paid, classified as operating activities | — | — |
20,000,000
EUR
|
— | — | — | — | — | — |
22,000,000
EUR
|
| Interest received, classified as operating activities | — | — |
3,000,000
EUR
|
— | — | — | — | — | — |
48,000,000
EUR
|
| Income taxes paid (refund), classified as operating activities | — | — |
1,129,000,000
EUR
|
— | — | — | — | — | — |
1,320,000,000
EUR
|
| Cash flows from (used in) operating activities | — | — |
7,083,000,000
EUR
|
— | — | — | — | — | — |
8,298,000,000
EUR
|
| Cash flows from (used in) investing activities [abstract] | ||||||||||
| Cash flows from (used in) investing activities | — | — |
5,947,000,000
EUR
|
— | — | — | — | — | — |
3,678,000,000
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 | — | — |
29,000,000
EUR
|
— | — | — | — | — | — |
12,000,000
EUR
|
| Payments to acquire or redeem entity's shares | — | — |
528,000,000
EUR
|
— | — | — | — | — | — |
1,216,000,000
EUR
|
| Payments of lease liabilities, classified as financing activities | — | — |
384,000,000
EUR
|
— | — | — | — | — | — |
332,000,000
EUR
|
| Dividends paid, classified as financing activities | — | — |
1,839,000,000
EUR
|
— | — | — | — | — | — |
1,812,000,000
EUR
|
| Cash flows from (used in) financing activities | — | — |
1,106,000,000
EUR
|
— | — | — | — | — | — |
3,619,000,000
EUR
|
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes | — | — |
30,000,000
EUR
|
— | — | — | — | — | — |
1,001,000,000
EUR
|
| Cash and cash equivalents |
2,845,000,000
EUR
|
— | — | — | — | — |
2,638,000,000
EUR
|
— | — | — |