v3.25.3
Financial instruments - Carrying amount and fair value (Details) - EUR (€)
€ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Financial instruments    
Carrying amount of financial assets € 5,657,216 € 5,796,379
Carrying amount of financial liabilities 13,543,571 14,249,510
Amortized cost - Liabilities    
Financial instruments    
Carrying amount of financial liabilities 9,086,975 8,734,362
FVPL - Liabilities    
Financial instruments    
Carrying amount of financial liabilities 20,170 59,942
Not classified    
Financial instruments    
Carrying amount of financial liabilities 4,436,426 5,455,206
Accounts payable to unrelated parties    
Financial instruments    
Carrying amount of financial liabilities 708,525 864,500
Accounts payable to unrelated parties | Amortized cost - Liabilities    
Financial instruments    
Carrying amount of financial liabilities 708,525 864,500
Accounts payable to related parties    
Financial instruments    
Carrying amount of financial liabilities 101,185 80,044
Accounts payable to related parties | Amortized cost - Liabilities    
Financial instruments    
Carrying amount of financial liabilities 101,185 80,044
Short-term debt    
Financial instruments    
Carrying amount of financial liabilities 67,486 2,099
Short-term debt | Amortized cost - Liabilities    
Financial instruments    
Carrying amount of financial liabilities 67,486 2,099
Long-term debt    
Financial instruments    
Carrying amount of financial liabilities 6,798,661 6,836,108
Long-term debt | Level 1    
Financial instruments    
Fair value of financial liabilities 6,207,690 6,015,977
Long-term debt | Level 2    
Financial instruments    
Fair value of financial liabilities 324,068 340,921
Long-term debt | Amortized cost - Liabilities    
Financial instruments    
Carrying amount of financial liabilities 6,798,661 6,836,108
Lease liabilities    
Financial instruments    
Carrying amount of financial liabilities 3,606,518 4,140,701
Lease liabilities | Not classified    
Financial instruments    
Carrying amount of financial liabilities 3,606,518 4,140,701
Other current and non-current liabilities    
Financial instruments    
Carrying amount of financial liabilities 2,261,196 2,326,058
Other current and non-current liabilities | Amortized cost - Liabilities    
Financial instruments    
Carrying amount of financial liabilities 1,411,118 951,611
Other current and non-current liabilities | FVPL - Liabilities    
Financial instruments    
Carrying amount of financial liabilities 20,170 59,942
Other current and non-current liabilities | Not classified    
Financial instruments    
Carrying amount of financial liabilities 829,908 1,314,505
Derivatives - cash flow hedging instruments    
Financial instruments    
Carrying amount of financial liabilities 1,578 15,388
Derivatives - cash flow hedging instruments | Level 2    
Financial instruments    
Fair value of financial liabilities 1,578 15,388
Derivatives - cash flow hedging instruments | Not classified    
Financial instruments    
Carrying amount of financial liabilities 1,578 15,388
Derivatives - not designated as hedging instruments    
Financial instruments    
Carrying amount of financial liabilities 9,018 26,615
Derivatives - not designated as hedging instruments | Level 2    
Financial instruments    
Fair value of financial liabilities 9,018 26,615
Derivatives - not designated as hedging instruments | FVPL - Liabilities    
Financial instruments    
Carrying amount of financial liabilities 9,018 26,615
Derivatives embedded in vPPAs    
Financial instruments    
Carrying amount of financial liabilities 8,726 25,394
Derivatives embedded in vPPAs | Level 3    
Financial instruments    
Fair value of financial liabilities 8,726 25,394
Derivatives embedded in vPPAs | FVPL - Liabilities    
Financial instruments    
Carrying amount of financial liabilities 8,726 25,394
Variable payments outstanding for acquisitions    
Financial instruments    
Carrying amount of financial liabilities 2,426 7,933
Variable payments outstanding for acquisitions | Level 3    
Financial instruments    
Fair value of financial liabilities 2,426 7,933
Variable payments outstanding for acquisitions | FVPL - Liabilities    
Financial instruments    
Carrying amount of financial liabilities 2,426 7,933
Put option liabilities    
Financial instruments    
Carrying amount of financial liabilities 828,330 1,299,117
Put option liabilities | Level 3    
Financial instruments    
Fair value of financial liabilities 828,330 1,299,117
Put option liabilities | Not classified    
Financial instruments    
Carrying amount of financial liabilities 828,330 1,299,117
Other financial liabilities    
Financial instruments    
Carrying amount of financial liabilities 1,411,118 951,611
Other financial liabilities | Amortized cost - Liabilities    
Financial instruments    
Carrying amount of financial liabilities 1,411,118 951,611
Amortized cost - Assets    
Financial instruments    
Carrying amount of financial assets 4,431,073 4,545,477
FVPL - Assets    
Financial instruments    
Carrying amount of financial assets 666,817 621,094
FVOCI - Assets    
Financial instruments    
Carrying amount of financial assets 364,555 436,645
Not classified    
Financial instruments    
Carrying amount of financial assets 194,771 193,163
Cash and cash equivalents    
Financial instruments    
Carrying amount of financial assets 1,255,948 1,180,187
Cash and cash equivalents | Level 1    
Financial instruments    
Fair value of financial assets 297,652 240,990
Cash and cash equivalents | Amortized cost - Assets    
Financial instruments    
Carrying amount of financial assets 958,296 939,197
Cash and cash equivalents | FVPL - Assets    
Financial instruments    
Carrying amount of financial assets 297,652 240,990
Trade accounts and other receivables from unrelated parties    
Financial instruments    
Carrying amount of financial assets 3,198,610 3,345,660
Trade accounts and other receivables from unrelated parties | Amortized cost - Assets    
Financial instruments    
Carrying amount of financial assets 3,111,769 3,258,181
Trade accounts and other receivables from unrelated parties | Not classified    
Financial instruments    
Carrying amount of financial assets 86,841 87,479
Accounts receivable from related parties    
Financial instruments    
Carrying amount of financial assets 33,026 40,936
Accounts receivable from related parties | Amortized cost - Assets    
Financial instruments    
Carrying amount of financial assets 33,026 40,936
Other current and non-current assets    
Financial instruments    
Carrying amount of financial assets 1,169,632 1,229,596
Other current and non-current assets | Amortized cost - Assets    
Financial instruments    
Carrying amount of financial assets 327,982 307,163
Other current and non-current assets | FVPL - Assets    
Financial instruments    
Carrying amount of financial assets 369,165 380,104
Other current and non-current assets | FVOCI - Assets    
Financial instruments    
Carrying amount of financial assets 364,555 436,645
Other current and non-current assets | Not classified    
Financial instruments    
Carrying amount of financial assets 107,930 105,684
Derivatives - cash flow hedging instruments    
Financial instruments    
Carrying amount of financial assets 16,774 4,362
Derivatives - cash flow hedging instruments | Level 2    
Financial instruments    
Fair value of financial assets 16,774 4,362
Derivatives - cash flow hedging instruments | Not classified    
Financial instruments    
Carrying amount of financial assets 16,774 4,362
Derivatives - not designated as hedging instruments    
Financial instruments    
Carrying amount of financial assets 113,106 21,453
Derivatives - not designated as hedging instruments | Level 2    
Financial instruments    
Fair value of financial assets 113,106 21,453
Derivatives - not designated as hedging instruments | FVPL - Assets    
Financial instruments    
Carrying amount of financial assets 113,106 21,453
Derivatives embedded in vPPAs    
Financial instruments    
Carrying amount of financial assets 9,284  
Derivatives embedded in vPPAs | Level 3    
Financial instruments    
Fair value of financial assets 9,284  
Derivatives embedded in vPPAs | FVPL - Assets    
Financial instruments    
Carrying amount of financial assets 9,284  
Equity investments    
Financial instruments    
Carrying amount of financial assets 104,717 187,600
Equity investments | Level 1    
Financial instruments    
Fair value of financial assets 27,556 90,483
Equity investments | Level 2    
Financial instruments    
Fair value of financial assets 61,719 67,963
Equity investments | Level 3    
Financial instruments    
Fair value of financial assets 15,442 29,154
Equity investments | FVPL - Assets    
Financial instruments    
Carrying amount of financial assets 44,999 120,813
Equity investments | FVOCI - Assets    
Financial instruments    
Carrying amount of financial assets 59,718 66,787
Debt securities    
Financial instruments    
Carrying amount of financial assets 396,225 465,432
Debt securities | Level 1    
Financial instruments    
Fair value of financial assets 396,225 465,432
Debt securities | FVPL - Assets    
Financial instruments    
Carrying amount of financial assets 91,388 95,574
Debt securities | FVOCI - Assets    
Financial instruments    
Carrying amount of financial assets 304,837 369,858
Other financial assets    
Financial instruments    
Carrying amount of financial assets 529,526 550,749
Other financial assets | Level 3    
Financial instruments    
Fair value of financial assets 110,388 142,264
Other financial assets | Amortized cost - Assets    
Financial instruments    
Carrying amount of financial assets 327,982 307,163
Other financial assets | FVPL - Assets    
Financial instruments    
Carrying amount of financial assets 110,388 142,264
Other financial assets | Not classified    
Financial instruments    
Carrying amount of financial assets € 91,156 € 101,322