Statement Of Comprehensive Income [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
Statement of comprehensive income [abstract]
Profit (loss)	164,000,000 EUR	1 222 EUR	1 058 EUR	—	1 058 EUR	1 201 EUR	—	1 040 EUR	161,000,000 EUR	1 040 EUR
Other comprehensive income [abstract]
Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract]
Other comprehensive income, before tax, gains (losses) from investments in equity instruments	—	2,000,000 EUR	—	—	—	5,000,000 EUR	—	—	—	—
Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans	—	51,000,000 EUR	—	—	—	71,000,000 EUR	—	—	—	—
Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract]
Exchange differences on translation [abstract]
Other comprehensive income, before tax, exchange differences on translation of foreign operations	—	47,000,000 EUR	—	—	—	48,000,000 EUR	—	—	—	—
Cash flow hedges [abstract]
Other comprehensive income, before tax, cash flow hedges	—	99,000,000 EUR	—	—	—	95,000,000 EUR	—	—	—	—
Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [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 [abstract]
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	—	—	—	—
Other comprehensive income	1,000,000 EUR	6,000,000 EUR	—	5,000,000 EUR	5,000,000 EUR	231,000,000 EUR	221,000,000 EUR	—	10,000,000 EUR	221,000,000 EUR
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 [abstract]
Comprehensive income, attributable to owners of parent	—	1 063 EUR	—	—	—	819,000,000 EUR	—	—	—	—
Comprehensive income, attributable to non-controlling interests	—	165,000,000 EUR	—	—	—	151,000,000 EUR	—	—	—	—