Statement Of Cash Flows [Abstract]
| Concept |
2020-01-01 to 2020-12-31 |
2019-01-01 to 2019-12-31 |
2018-01-01 to 2018-12-31 |
|---|---|---|---|
| Statement of cash flows [abstract] | |||
| Cash flows from (used in) operating activities [abstract] | |||
| Adjustments for interest expense |
160,000,000
EUR
|
174,000,000
EUR
|
165,000,000
EUR
|
| Adjustments for interest income |
14,000,000
EUR
|
27,000,000
EUR
|
31,000,000
EUR
|
| Increase (decrease) in working capital |
87,000,000
EUR
|
819,000,000
EUR
|
179,000,000
EUR
|
| Cash flows from (used in) investing activities [abstract] | |||
| Payments for development project expenditure |
302,000,000
EUR
|
339,000,000
EUR
|
298,000,000
EUR
|
| Cash flows from (used in) financing activities [abstract] | |||
| Dividends paid to equity holders of parent, classified as financing activities |
1,000,000
EUR
|
453,000,000
EUR
|
401,000,000
EUR
|
| Proceeds from sale or issue of treasury shares |
46,000,000
EUR
|
58,000,000
EUR
|
94,000,000
EUR
|
| Cash flows from (used in) increase (decrease) in current borrowings |
16,000,000
EUR
|
23,000,000
EUR
|
34,000,000
EUR
|