Statement Of Financial Position [Abstract]

Koninklijke BAM Groep N.V. - Filing #5830023

Concept	As at 2024-12-31	As at 2024-12-31	As at 2024-12-31	As at 2024-12-31	As at 2024-12-31	As at 2024-12-31	As at 2024-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31
Statement of financial position [abstract]
Assets [abstract]
Property, plant and equipment	—	—	—	—	—	244,476,000 EUR	—	236,411,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—
Investments accounted for using equity method	—	—	—	—	—	177,014,000 EUR	—	333,652,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—
Deferred tax assets	—	—	—	—	—	111,875,000 EUR	—	82,446,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—
Cash and cash equivalents	—	—	—	—	—	763,420,000 EUR	—	757,333,000 EUR	—	—	—	—	—	—	841,246,000 EUR	—	—	—	—	—	—
Assets	—	—	—	—	—	3,891,006,000 EUR	—	3,932,020,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—
Equity and liabilities [abstract]
Equity [abstract]
Equity attributable to owners of parent	—	—	—	—	—	895,513,000 EUR	—	920,495,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—
Non-controlling interests	—	—	—	—	—	26,000 EUR	—	324,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—
Equity	122,395,000 EUR	26,000 EUR	66,217,000 EUR	895,513,000 EUR	24,000 EUR	895,539,000 EUR	839,311,000 EUR	920,819,000 EUR	141,538,000 EUR	324,000 EUR	86,723,000 EUR	920,495,000 EUR	26,369,000 EUR	839,311,000 EUR	808,484,000 EUR	2,106,000 EUR	41,941,000 EUR	105,167,000 EUR	810,590,000 EUR	34,505,000 EUR	839,311,000 EUR
Liabilities [abstract]
Deferred tax liabilities	—	—	—	—	—	6,919,000 EUR	—	14,848,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—
Liabilities included in disposal groups classified as held for sale	—	—	—	—	—	- EUR	—	- EUR	—	—	—	—	—	—	—	—	—	—	—	—	—
Equity and liabilities	—	—	—	—	—	3,891,006,000 EUR	—	3,932,020,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—