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Derivative Financial Instruments and Risk Management Policies - Breakdown of Derivatives and Expected Maturity Schedule (Details) - EUR (€) € in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Disclosure of detailed information about hedges [line items] |  |
Notional amount | € 84,933 | € 81,097
Derivative instruments, including netting adjustments |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 501 | 2,715
Non-current derivative financial assets | (2,605) | (1,940)
Current derivative financial assets | (461) | (352)
Non-current derivative financial liabilities | 1,865 | 1,657
Current derivative financial liabilities | 199 | 236
Derivative asset (liability), net | (1,002) | (399)
Derivative instruments, including netting adjustments | 2025 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (2,992) | (2,829)
Derivative instruments, including netting adjustments | 2026 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 1,542 | 457
Derivative instruments, including netting adjustments | 2027 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 968 | 1,795
Derivative instruments, including netting adjustments | Later |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 983 | 3,292
No derivatives instruments of accounting hedges |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 29 | 27
Non-current derivative financial assets | 0 | 0
Current derivative financial assets | 0 | 0
Non-current derivative financial liabilities | 29 | 27
Current derivative financial liabilities | 0 | 0
Derivative asset (liability), net | 29 | 27
No derivatives instruments of accounting hedges | 2025 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
No derivatives instruments of accounting hedges | 2026 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
No derivatives instruments of accounting hedges | 2027 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
No derivatives instruments of accounting hedges | Later |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 29 | 27
Exchange rate risk | No derivatives instruments of accounting hedges |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 29 | 27
Non-current derivative financial assets | 0 | 0
Current derivative financial assets | 0 | 0
Non-current derivative financial liabilities | 29 | 27
Current derivative financial liabilities | 0 | 0
Derivative asset (liability), net | 29 | 27
Exchange rate risk | No derivatives instruments of accounting hedges | 2025 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Exchange rate risk | No derivatives instruments of accounting hedges | 2026 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Exchange rate risk | No derivatives instruments of accounting hedges | 2027 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Exchange rate risk | No derivatives instruments of accounting hedges | Later |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 29 | 27
Exchange rate risk | Fair value hedges | No derivatives instruments of accounting hedges |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Non-current derivative financial assets | 0 | 0
Current derivative financial assets | 0 | 0
Non-current derivative financial liabilities | 0 | 0
Current derivative financial liabilities | 0 | 0
Derivative asset (liability), net | 0 | 0
Exchange rate risk | Fair value hedges | No derivatives instruments of accounting hedges | 2025 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Exchange rate risk | Fair value hedges | No derivatives instruments of accounting hedges | 2026 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Exchange rate risk | Fair value hedges | No derivatives instruments of accounting hedges | 2027 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Exchange rate risk | Fair value hedges | No derivatives instruments of accounting hedges | Later |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Exchange rate risk | Net investment hedges | No derivatives instruments of accounting hedges |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 29 | 27
Non-current derivative financial assets | 0 | 0
Current derivative financial assets | 0 | 0
Non-current derivative financial liabilities | 29 | 27
Current derivative financial liabilities | 0 | 0
Derivative asset (liability), net | 29 | 27
Exchange rate risk | Net investment hedges | No derivatives instruments of accounting hedges | 2025 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Exchange rate risk | Net investment hedges | No derivatives instruments of accounting hedges | 2026 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Exchange rate risk | Net investment hedges | No derivatives instruments of accounting hedges | 2027 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Exchange rate risk | Net investment hedges | No derivatives instruments of accounting hedges | Later |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 29 | 27
Designated as hedging instrument | Derivative instruments, including netting adjustments |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 4,110 | 5,098
Non-current derivative financial assets | (2,441) | (1,785)
Current derivative financial assets | (372) | (272)
Non-current derivative financial liabilities | 1,526 | 1,224
Current derivative financial liabilities | 67 | 87
Derivative asset (liability), net | (1,220) | (746)
Designated as hedging instrument | Derivative instruments, including netting adjustments | 2025 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (2,724) | (3,225)
Designated as hedging instrument | Derivative instruments, including netting adjustments | 2026 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 2,408 | 873
Designated as hedging instrument | Derivative instruments, including netting adjustments | 2027 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 1,293 | 2,533
Designated as hedging instrument | Derivative instruments, including netting adjustments | Later |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 3,133 | 4,917
Designated as hedging instrument | Interest rate risk | Derivative instruments, including netting adjustments |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (6,252) | (5,381)
Non-current derivative financial assets | (322) | (334)
Current derivative financial assets | (131) | (163)
Non-current derivative financial liabilities | 545 | 404
Current derivative financial liabilities | 20 | 35
Derivative asset (liability), net | 112 | (58)
Designated as hedging instrument | Interest rate risk | Derivative instruments, including netting adjustments | 2025 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (1,624) | (1,190)
Designated as hedging instrument | Interest rate risk | Derivative instruments, including netting adjustments | 2026 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 1 | (123)
Designated as hedging instrument | Interest rate risk | Derivative instruments, including netting adjustments | 2027 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 1 | 2
Designated as hedging instrument | Interest rate risk | Derivative instruments, including netting adjustments | Later |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (4,630) | (4,070)
Designated as hedging instrument | Interest rate risk | Cash flow hedges | Derivative instruments, including netting adjustments |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 2,619 | 1,392
Non-current derivative financial assets | (12) | (16)
Current derivative financial assets | (22) | 0
Non-current derivative financial liabilities | 129 | 83
Current derivative financial liabilities | 2 | 35
Derivative asset (liability), net | 97 | 102
Designated as hedging instrument | Interest rate risk | Cash flow hedges | Derivative instruments, including netting adjustments | 2025 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (2,150) | (1,490)
Designated as hedging instrument | Interest rate risk | Cash flow hedges | Derivative instruments, including netting adjustments | 2026 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | (650)
Designated as hedging instrument | Interest rate risk | Cash flow hedges | Derivative instruments, including netting adjustments | 2027 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Designated as hedging instrument | Interest rate risk | Cash flow hedges | Derivative instruments, including netting adjustments | Later |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 4,769 | 3,532
Designated as hedging instrument | Interest rate risk | Fair value hedges | Derivative instruments, including netting adjustments |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (8,871) | (6,773)
Non-current derivative financial assets | (310) | (318)
Current derivative financial assets | (109) | (163)
Non-current derivative financial liabilities | 416 | 321
Current derivative financial liabilities | 18 | 0
Derivative asset (liability), net | 15 | (160)
Designated as hedging instrument | Interest rate risk | Fair value hedges | Derivative instruments, including netting adjustments | 2025 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 526 | 300
Designated as hedging instrument | Interest rate risk | Fair value hedges | Derivative instruments, including netting adjustments | 2026 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 1 | 527
Designated as hedging instrument | Interest rate risk | Fair value hedges | Derivative instruments, including netting adjustments | 2027 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 1 | 2
Designated as hedging instrument | Interest rate risk | Fair value hedges | Derivative instruments, including netting adjustments | Later |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (9,399) | (7,602)
Designated as hedging instrument | Exchange rate risk | Derivative instruments, including netting adjustments |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 6,284 | 6,332
Non-current derivative financial assets | (1,594) | (1,124)
Current derivative financial assets | (136) | (69)
Non-current derivative financial liabilities | 837 | 711
Current derivative financial liabilities | 43 | 51
Derivative asset (liability), net | (850) | (431)
Designated as hedging instrument | Exchange rate risk | Derivative instruments, including netting adjustments | 2025 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (2,085) | (2,115)
Designated as hedging instrument | Exchange rate risk | Derivative instruments, including netting adjustments | 2026 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 2,331 | 0
Designated as hedging instrument | Exchange rate risk | Derivative instruments, including netting adjustments | 2027 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 714 | 2,344
Designated as hedging instrument | Exchange rate risk | Derivative instruments, including netting adjustments | Later |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 5,324 | 6,103
Designated as hedging instrument | Exchange rate risk | Cash flow hedges | Derivative instruments, including netting adjustments |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 8,483 | 9,039
Non-current derivative financial assets | (1,594) | (1,124)
Current derivative financial assets | (54) | (38)
Non-current derivative financial liabilities | 837 | 708
Current derivative financial liabilities | 1 | 20
Derivative asset (liability), net | (810) | (434)
Designated as hedging instrument | Exchange rate risk | Cash flow hedges | Derivative instruments, including netting adjustments | 2025 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 101 | 657
Designated as hedging instrument | Exchange rate risk | Cash flow hedges | Derivative instruments, including netting adjustments | 2026 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 2,344 | 0
Designated as hedging instrument | Exchange rate risk | Cash flow hedges | Derivative instruments, including netting adjustments | 2027 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 714 | 2,344
Designated as hedging instrument | Exchange rate risk | Cash flow hedges | Derivative instruments, including netting adjustments | Later |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 5,324 | 6,038
Designated as hedging instrument | Exchange rate risk | Fair value hedges | Derivative instruments, including netting adjustments |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 481 | 466
Non-current derivative financial assets | 0 | 0
Current derivative financial assets | (12) | (5)
Non-current derivative financial liabilities | 0 | 3
Current derivative financial liabilities | 1 | 20
Derivative asset (liability), net | (11) | 18
Designated as hedging instrument | Exchange rate risk | Fair value hedges | Derivative instruments, including netting adjustments | 2025 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 494 | 401
Designated as hedging instrument | Exchange rate risk | Fair value hedges | Derivative instruments, including netting adjustments | 2026 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (13) | 0
Designated as hedging instrument | Exchange rate risk | Fair value hedges | Derivative instruments, including netting adjustments | 2027 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Designated as hedging instrument | Exchange rate risk | Fair value hedges | Derivative instruments, including netting adjustments | Later |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 65
Designated as hedging instrument | Exchange rate risk | Net investment hedges | Derivative instruments, including netting adjustments |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (2,680) | (3,173)
Non-current derivative financial assets | 0 | 0
Current derivative financial assets | (70) | (26)
Non-current derivative financial liabilities | 0 | 0
Current derivative financial liabilities | 41 | 11
Derivative asset (liability), net | (29) | (15)
Designated as hedging instrument | Exchange rate risk | Net investment hedges | Derivative instruments, including netting adjustments | 2025 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (2,680) | (3,173)
Designated as hedging instrument | Exchange rate risk | Net investment hedges | Derivative instruments, including netting adjustments | 2026 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Designated as hedging instrument | Exchange rate risk | Net investment hedges | Derivative instruments, including netting adjustments | 2027 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Designated as hedging instrument | Exchange rate risk | Net investment hedges | Derivative instruments, including netting adjustments | Later |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Designated as hedging instrument | Interest rate and exchange rate risk | Derivative instruments, including netting adjustments |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 4,078 | 4,147
Non-current derivative financial assets | (525) | (327)
Current derivative financial assets | (105) | (40)
Non-current derivative financial liabilities | 144 | 109
Current derivative financial liabilities | 4 | 1
Derivative asset (liability), net | (482) | (257)
Designated as hedging instrument | Interest rate and exchange rate risk | Derivative instruments, including netting adjustments | 2025 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 985 | 80
Designated as hedging instrument | Interest rate and exchange rate risk | Derivative instruments, including netting adjustments | 2026 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 76 | 996
Designated as hedging instrument | Interest rate and exchange rate risk | Derivative instruments, including netting adjustments | 2027 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 578 | 187
Designated as hedging instrument | Interest rate and exchange rate risk | Derivative instruments, including netting adjustments | Later |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 2,439 | 2,884
Designated as hedging instrument | Interest rate and exchange rate risk | Cash flow hedges | Derivative instruments, including netting adjustments |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 3,425 | 3,424
Non-current derivative financial assets | (400) | (281)
Current derivative financial assets | (104) | (40)
Non-current derivative financial liabilities | 64 | 35
Current derivative financial liabilities | 0 | 1
Derivative asset (liability), net | (440) | (285)
Designated as hedging instrument | Interest rate and exchange rate risk | Cash flow hedges | Derivative instruments, including netting adjustments | 2025 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 985 | 80
Designated as hedging instrument | Interest rate and exchange rate risk | Cash flow hedges | Derivative instruments, including netting adjustments | 2026 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 76 | 996
Designated as hedging instrument | Interest rate and exchange rate risk | Cash flow hedges | Derivative instruments, including netting adjustments | 2027 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 472 | 9
Designated as hedging instrument | Interest rate and exchange rate risk | Cash flow hedges | Derivative instruments, including netting adjustments | Later |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 1,892 | 2,339
Designated as hedging instrument | Interest rate and exchange rate risk | Fair value hedges | Derivative instruments, including netting adjustments |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 653 | 723
Non-current derivative financial assets | (125) | (46)
Current derivative financial assets | (1) | 0
Non-current derivative financial liabilities | 80 | 74
Current derivative financial liabilities | 4 | 0
Derivative asset (liability), net | (42) | 28
Designated as hedging instrument | Interest rate and exchange rate risk | Fair value hedges | Derivative instruments, including netting adjustments | 2025 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Designated as hedging instrument | Interest rate and exchange rate risk | Fair value hedges | Derivative instruments, including netting adjustments | 2026 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Designated as hedging instrument | Interest rate and exchange rate risk | Fair value hedges | Derivative instruments, including netting adjustments | 2027 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 106 | 178
Designated as hedging instrument | Interest rate and exchange rate risk | Fair value hedges | Derivative instruments, including netting adjustments | Later |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 547 | 545
Undesignated derivatives | Derivative instruments, including netting adjustments |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (3,609) | (2,383)
Non-current derivative financial assets | (164) | (155)
Current derivative financial assets | (89) | (80)
Non-current derivative financial liabilities | 339 | 433
Current derivative financial liabilities | 132 | 149
Derivative asset (liability), net | 218 | 347
Undesignated derivatives | Derivative instruments, including netting adjustments | 2025 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (268) | 396
Undesignated derivatives | Derivative instruments, including netting adjustments | 2026 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (866) | (416)
Undesignated derivatives | Derivative instruments, including netting adjustments | 2027 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (325) | (738)
Undesignated derivatives | Derivative instruments, including netting adjustments | Later |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (2,150) | (1,625)
Undesignated derivatives | Interest rate risk | Derivative instruments, including netting adjustments |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (3,738) | (3,176)
Non-current derivative financial assets | (159) | (155)
Current derivative financial assets | (59) | (54)
Non-current derivative financial liabilities | 330 | 399
Current derivative financial liabilities | 8 | 14
Derivative asset (liability), net | 120 | 204
Undesignated derivatives | Interest rate risk | Derivative instruments, including netting adjustments | 2025 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (525) | (288)
Undesignated derivatives | Interest rate risk | Derivative instruments, including netting adjustments | 2026 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (738) | (525)
Undesignated derivatives | Interest rate risk | Derivative instruments, including netting adjustments | 2027 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (325) | (738)
Undesignated derivatives | Interest rate risk | Derivative instruments, including netting adjustments | Later |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (2,150) | (1,625)
Undesignated derivatives | Exchange rate risk | Derivative instruments, including netting adjustments |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (646) | (123)
Non-current derivative financial assets | 0 | 0
Current derivative financial assets | (20) | (14)
Non-current derivative financial liabilities | 9 | 0
Current derivative financial liabilities | 9 | 13
Derivative asset (liability), net | (2) | (1)
Undesignated derivatives | Exchange rate risk | Derivative instruments, including netting adjustments | 2025 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (125) | (123)
Undesignated derivatives | Exchange rate risk | Derivative instruments, including netting adjustments | 2026 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | (521) | 0
Undesignated derivatives | Exchange rate risk | Derivative instruments, including netting adjustments | 2027 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Undesignated derivatives | Exchange rate risk | Derivative instruments, including netting adjustments | Later |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Undesignated derivatives | Other derivatives | Derivative instruments, including netting adjustments |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 775 | 916
Non-current derivative financial assets | (5) | 0
Current derivative financial assets | (10) | (12)
Non-current derivative financial liabilities | 0 | 34
Current derivative financial liabilities | 115 | 122
Derivative asset (liability), net | 100 | 144
Undesignated derivatives | Other derivatives | Derivative instruments, including netting adjustments | 2025 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 382 | 807
Undesignated derivatives | Other derivatives | Derivative instruments, including netting adjustments | 2026 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 393 | 109
Undesignated derivatives | Other derivatives | Derivative instruments, including netting adjustments | 2027 |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Undesignated derivatives | Other derivatives | Derivative instruments, including netting adjustments | Later |  |
Disclosure of detailed information about hedges [line items] |  |
Notional amount | 0 | 0
Loans and other debts | No derivatives instruments of accounting hedges |  |
Disclosure of detailed information about hedges [line items] |  |
Non-current derivative financial liabilities | € 29 | € 27

X
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- Definition The amount of non-current derivative financial liabilities. [Refer: Derivative financial liabilities] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 + Details
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