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Segment Reporting (Details) - EUR (€) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of operating segments [line items] |  |  |  |
Revenue | € 9,147,000,000 | € 9,147,000,000 | € 8,514,000,000 | € 7,551,000,000
Other income |  | 1,000,000 | 1,000,000 | 2,000,000
Operating expense |  | 7,806,000,000 | 7,524,000,000 | 6,825,000,000
Depreciation and amortisation expense |  | 441,000,000 | 401,000,000 | 299,000,000
Gains or losses on disposal of non-current assets and Impairments |  | 2,208,000,000 | 35,000,000 | (6,000,000)
Profit (loss) from operating activities |  | 3,109,000,000 | 625,000,000 | 423,000,000
Profit loss on derivatives and other net financial income expense |  | 539,000,000 | (13,000,000) | (75,000,000)
Net financial income expense from financing |  | (265,000,000) | (217,000,000) | (242,000,000)
Finance income (cost) |  | 274,000,000 | (230,000,000) | (317,000,000)
Share of profit (loss) of associates accounted for using equity method |  | 238,000,000 | 215,000,000 | 165,000,000
Profit (loss) before tax |  | 3,621,000,000 | 610,000,000 | 271,000,000
Tax expense (income) |  | (145,000,000) | (115,000,000) | (30,000,000)
Profit (loss) from continuing operations |  | 3,476,000,000 | 495,000,000 | 241,000,000
Profit (loss) from discontinued operations |  | 14,000,000 | 16,000,000 | 64,000,000
Profit (loss) |  | 3,490,000,000 | 511,000,000 | 305,000,000
Profit (loss), attributable to non-controlling interests |  | (251,000,000) | (170,000,000) | (117,000,000)
Profit (loss), attributable to owners of parent |  | 3,239,000,000 | 341,000,000 | 188,000,000
Revenue and other operating income |  | 9,148,000,000 | 8,515,000,000 | 7,553,000,000
Construction division [Member] |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Revenue | 7,234,000,000 | 7,234,000,000 | 6,869,000,000 | 6,280,000,000
Other income |  | 2,000,000 | 1,000,000 | 2,000,000
Operating expense |  | 6,806,000,000 | 6,659,000,000 | 6,106,000,000
Depreciation and amortisation expense |  | 146,000,000 | 134,000,000 | 107,000,000
Gains or losses on disposal of non-current assets and Impairments |  | 0 | 0 | 0
Profit (loss) from operating activities |  | 284,000,000 | 77,000,000 | 69,000,000
Profit loss on derivatives and other net financial income expense |  | (34,000,000) | (31,000,000) | (34,000,000)
Net financial income expense from financing |  | 150,000,000 | 117,000,000 | 36,000,000
Finance income (cost) |  | 116,000,000 | 86,000,000 | 2,000,000
Share of profit (loss) of associates accounted for using equity method |  | 0 | 0 | 0
Profit (loss) before tax |  | 400,000,000 | 163,000,000 | 71,000,000
Tax expense (income) |  | (142,000,000) | (65,000,000) | (6,000,000)
Profit (loss) from continuing operations |  | 258,000,000 | 98,000,000 | 65,000,000
Profit (loss) from discontinued operations |  | 0 | 0 | 0
Profit (loss) |  | 258,000,000 | 98,000,000 | 65,000,000
Profit (loss), attributable to non-controlling interests |  | (68,000,000) | (51,000,000) | (42,000,000)
Profit (loss), attributable to owners of parent |  | 190,000,000 | 47,000,000 | 23,000,000
Revenue and other operating income |  | 7,236,000,000 | 6,870,000,000 | 6,282,000,000
Toll roads division [Member] |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Revenue | € 1,256,000,000 | 1,256,000,000 | 1,085,000,000 | 780,000,000
Other income |  | 0 | 0 | 0
Operating expense |  | 338,000,000 | 286,000,000 | 230,000,000
Depreciation and amortisation expense |  | 232,000,000 | 213,000,000 | 159,000,000
Gains or losses on disposal of non-current assets and Impairments |  | 151,000,000 | 38,000,000 | (3,000,000)
Profit (loss) from operating activities |  | 837,000,000 | 624,000,000 | 388,000,000
Profit loss on derivatives and other net financial income expense |  | (75,000,000) | 5,000,000 | (109,000,000)
Net financial income expense from financing |  | (215,000,000) | (224,000,000) | (240,000,000)
Finance income (cost) |  | (290,000,000) | (219,000,000) | (349,000,000)
Share of profit (loss) of associates accounted for using equity method |  | 226,000,000 | 198,000,000 | 157,000,000
Profit (loss) before tax |  | 773,000,000 | 603,000,000 | 196,000,000
Tax expense (income) |  | (110,000,000) | (55,000,000) | (39,000,000)
Profit (loss) from continuing operations |  | 663,000,000 | 548,000,000 | 157,000,000
Profit (loss) from discontinued operations |  | 0 | 0 | 0
Profit (loss) |  | 663,000,000 | 548,000,000 | 157,000,000
Profit (loss), attributable to non-controlling interests |  | (160,000,000) | (126,000,000) | (66,000,000)
Profit (loss), attributable to owners of parent |  | 503,000,000 | 422,000,000 | 91,000,000
Revenue and other operating income |  | 1,256,000,000 | 1,085,000,000 | 780,000,000
Airports [Member] |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Revenue |  | 91,000,000 | 80,000,000 | 54,000,000
Other income |  | 0 | 0 | 0
Operating expense |  | 65,000,000 | 58,000,000 | 56,000,000
Depreciation and amortisation expense |  | 22,000,000 | 20,000,000 | 7,000,000
Gains or losses on disposal of non-current assets and Impairments |  | 2,025,000,000 | 0 | 0
Profit (loss) from operating activities |  | 2,029,000,000 | 2,000,000 | (9,000,000)
Profit loss on derivatives and other net financial income expense |  | 627,000,000 | (12,000,000) | 19,000,000
Net financial income expense from financing |  | (2,000,000) | 3,000,000 | 0
Finance income (cost) |  | 625,000,000 | (9,000,000) | 19,000,000
Share of profit (loss) of associates accounted for using equity method |  | 8,000,000 | 11,000,000 | 7,000,000
Profit (loss) before tax |  | 2,662,000,000 | 4,000,000 | 17,000,000
Tax expense (income) |  | 3,000,000 | (20,000,000) | 2,000,000
Profit (loss) from continuing operations |  | 2,665,000,000 | (16,000,000) | 19,000,000
Profit (loss) from discontinued operations |  | 0 | 0 | 0
Profit (loss) |  | 2,665,000,000 | (16,000,000) | 19,000,000
Profit (loss), attributable to non-controlling interests |  | (23,000,000) | 7,000,000 | (9,000,000)
Profit (loss), attributable to owners of parent |  | 2,642,000,000 | (9,000,000) | 10,000,000
Revenue and other operating income |  | 91,000,000 | 80,000,000 | 54,000,000
Energy and mobility infrastructure division [Member] |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Revenue |  | 270,000,000 | 207,000,000 | 191,000,000
Other income |  | 0 | 0 | 0
Operating expense |  | 268,000,000 | 206,000,000 | 196,000,000
Depreciation and amortisation expense |  | 13,000,000 | 9,000,000 | 8,000,000
Gains or losses on disposal of non-current assets and Impairments |  | 0 | 0 | 0
Profit (loss) from operating activities |  | (11,000,000) | (8,000,000) | (13,000,000)
Profit loss on derivatives and other net financial income expense |  | 0 | (1,000,000) | 0
Net financial income expense from financing |  | (8,000,000) | 0 | (4,000,000)
Finance income (cost) |  | (8,000,000) | (1,000,000) | (4,000,000)
Share of profit (loss) of associates accounted for using equity method |  | 0 | (1,000,000) | 0
Profit (loss) before tax |  | (19,000,000) | (10,000,000) | (17,000,000)
Tax expense (income) |  | 5,000,000 | 2,000,000 | (2,000,000)
Profit (loss) from continuing operations |  | (14,000,000) | (8,000,000) | (19,000,000)
Profit (loss) from discontinued operations |  | 0 | 0 | 0
Profit (loss) |  | (14,000,000) | (8,000,000) | (19,000,000)
Profit (loss), attributable to non-controlling interests |  | 0 | 0 | 0
Profit (loss), attributable to owners of parent |  | (14,000,000) | (8,000,000) | (19,000,000)
Revenue and other operating income |  | 270,000,000 | 207,000,000 | 191,000,000
Adjustments [Member] |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Revenue |  | (224,000,000) | (233,000,000) | (220,000,000)
Other income |  | 0 | 0 | (1,000,000)
Operating expense |  | (222,000,000) | (233,000,000) | (221,000,000)
Depreciation and amortisation expense |  | 0 | (1,000,000) | 0
Gains or losses on disposal of non-current assets and Impairments |  | 0 | (1,000,000) | 0
Profit (loss) from operating activities |  | (2,000,000) | 0 | 0
Profit loss on derivatives and other net financial income expense |  | (3,000,000) | (2,000,000) | (1,000,000)
Net financial income expense from financing |  | 3,000,000 | 1,000,000 | 1,000,000
Finance income (cost) |  | 0 | (1,000,000) | 0
Share of profit (loss) of associates accounted for using equity method |  | 0 | 1,000,000 | 1,000,000
Profit (loss) before tax |  | (2,000,000) | 0 | 1,000,000
Tax expense (income) |  | 0 | 1,000,000 | 0
Profit (loss) from continuing operations |  | (2,000,000) | 1,000,000 | 1,000,000
Profit (loss) from discontinued operations |  | 0 | (1,000,000) | 0
Profit (loss) |  | (2,000,000) | 0 | 1,000,000
Profit (loss), attributable to non-controlling interests |  | 0 | 0 | 0
Profit (loss), attributable to owners of parent |  | (2,000,000) | 0 | 1,000,000
Revenue and other operating income |  | (224,000,000) | (233,000,000) | (221,000,000)
Other division [Member] |  |  |  |
Disclosure of operating segments [line items] |  |  |  |
Revenue |  | 520,000,000 | 506,000,000 | 466,000,000
Other income |  | (1,000,000) | 0 | 1,000,000
Operating expense |  | 551,000,000 | 548,000,000 | 458,000,000
Depreciation and amortisation expense |  | 28,000,000 | 26,000,000 | 18,000,000
Gains or losses on disposal of non-current assets and Impairments |  | 32,000,000 | (2,000,000) | (3,000,000)
Profit (loss) from operating activities |  | (28,000,000) | (70,000,000) | (12,000,000)
Profit loss on derivatives and other net financial income expense |  | 24,000,000 | 28,000,000 | 50,000,000
Net financial income expense from financing |  | (193,000,000) | (114,000,000) | (35,000,000)
Finance income (cost) |  | (169,000,000) | (86,000,000) | 15,000,000
Share of profit (loss) of associates accounted for using equity method |  | 4,000,000 | 6,000,000 | 0
Profit (loss) before tax |  | (193,000,000) | (150,000,000) | 3,000,000
Tax expense (income) |  | 99,000,000 | 22,000,000 | 15,000,000
Profit (loss) from continuing operations |  | (94,000,000) | (128,000,000) | 18,000,000
Profit (loss) from discontinued operations |  | 14,000,000 | 17,000,000 | 64,000,000
Profit (loss) |  | (80,000,000) | (111,000,000) | 82,000,000
Profit (loss), attributable to non-controlling interests |  | 0 | 0 | 0
Profit (loss), attributable to owners of parent |  | (80,000,000) | (111,000,000) | 82,000,000
Revenue and other operating income |  | € 519,000,000 | € 506,000,000 | € 467,000,000

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- Definition The profit (loss) before tax expense or income. [Refer: Profit (loss)] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 8 -IssueDate 2024-01-01 -Paragraph 28 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_28_b&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 8 -IssueDate 2024-01-01 -Paragraph 23 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_23&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 5 -IssueDate 2024-01-01 -Paragraph 33 -Subparagraph b -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2024-en-r&anchor=para_33_b_i&doctype=Standard -URIDate 2024-03-27 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 103 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_103&doctype=Standard -URIDate 2024-03-27 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 102 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_102&doctype=Standard -URIDate 2024-03-27 + Details
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