Profit Or Loss [Abstract]

Bouygues SA - Filing #883004

Concept	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31
Profit or loss [abstract]
Profit (loss) [abstract]
Decrease (increase) in inventories of finished goods and work in progress	—	—	—	99,000,000 EUR	202,000,000 EUR	—	—	—
Raw materials and consumables used	—	—	—	16 641 EUR	15 193 EUR	—	—	—
Employee benefits expense	—	—	—	8 497 EUR	8 090 EUR	—	—	—
Depreciation and amortisation expense	—	—	—	2 065 EUR	1 832 EUR	—	—	—
Profit (loss) from operating activities	—	—	—	1 733 EUR	1 124 EUR	—	—	—
Share of profit (loss) of associates and joint ventures accounted for using equity method	—	—	—	222,000,000 EUR	216,000,000 EUR	—	—	—
Tax expense (income)	—	—	—	432,000,000 EUR	317,000,000 EUR	—	—	—
Profit (loss) from continuing operations	—	—	—	1 305 EUR	770,000,000 EUR	—	—	—
Profit (loss)	180,000,000 EUR	1 125 EUR	1 125 EUR	1 305 EUR	770,000,000 EUR	74,000,000 EUR	696,000,000 EUR	696,000,000 EUR
Profit (loss), attributable to [abstract]
Profit (loss), attributable to owners of parent	—	—	—	1 125 EUR	696,000,000 EUR	—	—	—
Profit (loss), attributable to non-controlling interests	—	—	—	180,000,000 EUR	74,000,000 EUR	—	—	—
Earnings per share [text block]	—	—	—	—	—	—	—	—
Earnings per share [abstract]
Earnings per share [line items]
Basic earnings per share [abstract]
Basic earnings (loss) per share from continuing operations	—	—	—	295.00	183.00	—	—	—
Diluted earnings per share [abstract]
Diluted earnings (loss) per share from continuing operations	—	—	—	295.00	183.00	—	—	—