Analysis Of Income And Expense [Abstract]

Bouygues SA - Filing #5984141

Concept	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31
Analysis of income and expense [abstract]
Revenue [abstract]
Interest income	—	—	—	—	—	—	—	—	—	—
Interest income on cash and cash equivalents	—	204,000,000 EUR	—	—	—	133,000,000 EUR	—	—	—	—
Other revenue	—	46,000,000 EUR	—	—	—	39,000,000 EUR	—	—	—	—
Material income and expense [abstract]
Other finance income	—	120,000,000 EUR	—	—	—	81,000,000 EUR	—	—	—	—
Other finance cost	—	217,000,000 EUR	—	—	—	164,000,000 EUR	—	—	—	—
Interest expense	—	391,000,000 EUR	—	—	—	387,000,000 EUR	—	—	—	—
Expenses by nature [abstract]
Raw materials and consumables used	—	25 216 EUR	—	—	—	25 721 EUR	—	—	—	—
Services expense	—	11 173 EUR	—	—	—	11 003 EUR	—	—	—	—
Classes of employee benefits expense [abstract]
Employee benefits expense	—	14 983 EUR	—	—	—	14 439 EUR	—	—	—	—
Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss [abstract]
Depreciation and amortisation expense [abstract]
Depreciation and amortisation expense	—	2 398 EUR	—	—	—	2 328 EUR	—	—	—	—
Tax expense other than income tax expense	—	658,000,000 EUR	—	—	—	629,000,000 EUR	—	—	—	—
Disclosure of attribution of expenses by nature to their function [text block]	—	—	—	—	—	—	—	—	—	—
Disclosure of attribution of expenses by nature to their function [abstract]
Disclosure of attribution of expenses by nature to their function [line items]
Miscellaneous other comprehensive income [abstract]
Other comprehensive income, net of tax, exchange differences on translation of foreign operations and hedges of net investments in foreign operations [abstract]
Other comprehensive income, net of tax, exchange differences on translation of foreign operations	3,000,000 EUR	59,000,000 EUR	—	—	56,000,000 EUR	—	—	—	—	—
Other comprehensive income, before tax, exchange differences on translation of foreign operations and hedges of net investments in foreign operations [abstract]
Other comprehensive income, before tax, exchange differences on translation of foreign operations	—	47,000,000 EUR	—	—	—	48,000,000 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	—	11,000,000 EUR	—	—	—	59,000,000 EUR	—	—	—	—
Share of other comprehensive income of associates and joint ventures accounted for using equity method, net of tax [abstract]
Share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss, net of tax	—	8,000,000 EUR	—	—	—	48,000,000 EUR	—	—	—	—
Income tax relating to components of other comprehensive income [abstract]
Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss	—	10,000,000 EUR	—	—	—	13,000,000 EUR	—	—	—	—
Income tax relating to components of other comprehensive income that will be reclassified to profit or loss	—	27,000,000 EUR	—	—	—	23,000,000 EUR	—	—	—	—
Comprehensive income, continuing and discontinued operations [abstract]
Comprehensive income	165,000,000 EUR	1 228 EUR	1 058 EUR	5,000,000 EUR	1 063 EUR	970,000,000 EUR	221,000,000 EUR	1 040 EUR	151,000,000 EUR	819,000,000 EUR
Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract]
Comprehensive income, attributable to owners of parent	—	1 063 EUR	—	—	—	819,000,000 EUR	—	—	—	—
Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract]
Comprehensive income, attributable to non-controlling interests	—	165,000,000 EUR	—	—	—	151,000,000 EUR	—	—	—	—