Statement Of Financial Position [Abstract]
| Concept |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||||||||
| Investment property | — | — | — | — | — | — | — | — |
4,723,068,000
EUR
|
— | — | — | — | — |
4,292,893,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements | — | — | — | — | — | — | — | — |
57,629,000
EUR
|
— | — | — | — | — |
67,755,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — | — | — | — | — |
4,382,000
EUR
|
— | — | — | — | — |
1,810,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — | — | — | — |
934,863,000
EUR
|
— | — | — | — | — |
439,139,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Assets | — | — | — | — | — | — | — | — |
6,820,289,000
EUR
|
— | — | — | — | — |
5,888,690,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||||||||
| Issued capital | — | — | — | — | — | — | — | — |
718,337,000
EUR
|
— | — | — | — | — |
718,337,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — | — | — | — | — | — |
1,622,491,000
EUR
|
— | — | — | — | — |
1,461,571,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Other reserves | — | — | — | — | — | — | — | — |
3,981,000
EUR
|
— | — | — | — | — |
3,396,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — | — | — | — | — | — | — |
3,128,218,000
EUR
|
— | — | — | — | — |
2,967,884,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests | — | — | — | — | — | — | — | — |
89,000
EUR
|
— | — | — | — | — |
84,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
1,622,491,000
EUR
|
422,000
EUR
|
89,000
EUR
|
3,128,218,000
EUR
|
718,337,000
EUR
|
95,775,000
EUR
|
3,559,000
EUR
|
887,147,000
EUR
|
3,128,308,000
EUR
|
0
EUR
|
2,967,884,000
EUR
|
84,000
EUR
|
3,396,000
EUR
|
887,147,000
EUR
|
2,967,968,000
EUR
|
1,461,571,000
EUR
|
95,775,000
EUR
|
718,337,000
EUR
|
12,804,000
EUR
|
885,607,000
EUR
|
2,639,635,000
EUR
|
62,000
EUR
|
95,775,000
EUR
|
0
EUR
|
2,639,697,000
EUR
|
718,337,000
EUR
|
1,118,663,000
EUR
|
| Liabilities [abstract] | |||||||||||||||||||||||||||
| Deferred tax liabilities | — | — | — | — | — | — | — | — |
536,317,000
EUR
|
— | — | — | — | — |
473,010,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities included in disposal groups classified as held for sale | — | — | — | — | — | — | — | — |
1,647,000
EUR
|
— | — | — | — | — |
0
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities | — | — | — | — | — | — | — | — |
6,820,289,000
EUR
|
— | — | — | — | — |
5,888,690,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |