Analysis Of Income And Expense [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
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 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||
| Revenue [abstract] | ||||||||||||||
| Revenue from rendering of services | — | — | — | — | — | — |
469,000,000
EUR
|
— |
343,000,000
EUR
|
— | — | — | — | — |
| Revenue from construction contracts | — | — | — | — | — | — |
2 796,2
EUR
|
— |
2 837,0
EUR
|
— | — | — | — | — |
| Interest income | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Interest income on cash and cash equivalents | — | — | — | — | — | — |
139,000,000
EUR
|
— |
70,000,000
EUR
|
— | — | — | — | — |
| Material income and expense [abstract] | ||||||||||||||
| Write-downs (reversals of write-downs) of inventories [abstract] | ||||||||||||||
| Write-downs (reversals of write-downs) of inventories | — | — | — | — | — | — |
101,000,000
EUR
|
— |
92,000,000
EUR
|
— | — | — | — | — |
| Impairment loss (reversal of impairment loss) on trade receivables [abstract] | ||||||||||||||
| Impairment loss (reversal of impairment loss) recognised in profit or loss, trade receivables | — | — | — | — | — | — |
118,000,000
EUR
|
— |
161,000,000
EUR
|
— | — | — | — | — |
| Gains (losses) on disposals of investment properties [abstract] | ||||||||||||||
| Gains (losses) on disposals of investment properties | — | — | — | — | — | — |
13,000,000
EUR
|
— |
47,000,000
EUR
|
— | — | — | — | — |
| Finance income (cost) | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other finance income (cost) | — | — | — | — | — | — |
287,000,000
EUR
|
— |
171,000,000
EUR
|
— | — | — | — | — |
| Other operating income (expense) | — | — | — | — | — | — |
249,000,000
EUR
|
— |
38,000,000
EUR
|
— | — | — | — | — |
| Sales and marketing expense | — | — | — | — | — | — |
1,024,000,000
EUR
|
— |
1,070,000,000
EUR
|
— | — | — | — | — |
| Trading income (expense) [abstract] | ||||||||||||||
| Trading income (expense) | — | — | — | — | — | — |
149,000,000
EUR
|
— |
23,000,000
EUR
|
— | — | — | — | — |
| Expenses by nature [abstract] | ||||||||||||||
| Classes of employee benefits expense [abstract] | ||||||||||||||
| Employee benefits expense | — | — | — | — | — | — |
2,536,000,000
EUR
|
— |
2,253,000,000
EUR
|
— | — | — | — | — |
| Miscellaneous other comprehensive income [abstract] | ||||||||||||||
| Other comprehensive income, attributable to non-controlling interests | — | — | — | — | — | — |
505,000,000
EUR
|
— |
2,160,000,000
EUR
|
— | — | — | — | — |
| Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract] | ||||||||||||||
| Share of profit (loss) of associates and joint ventures accounted for using equity method | — | — | — | — | — | — |
191,000,000
EUR
|
— |
502,000,000
EUR
|
— | — | — | — | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||
| Comprehensive income |
505,000,000
EUR
|
–
EUR
|
–
EUR
|
2,148,000,000
EUR
|
–
EUR
|
2,148,000,000
EUR
|
2,653,000,000
EUR
|
–
EUR
|
5,235,000,000
EUR
|
2,160,000,000
EUR
|
3,074,000,000
EUR
|
–
EUR
|
–
EUR
|
3,074,000,000
EUR
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — | — | — |
2,148,000,000
EUR
|
— |
3,074,000,000
EUR
|
— | — | — | — | — |