Statement Of Changes In Equity [Abstract]

KBC Groupe NV - Filing #3173649

Concept	As at 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	As at 2023-12-31	2023-01-01 to 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	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	As at 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	As at 2023-12-31	2023-01-01 to 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	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	2022-01-01 to 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	2022-01-01 to 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	As at 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	434,000,000 EUR	—	—	24 260 EUR	1 799 EUR	—	0 EUR	14 332 EUR	2 250 EUR	222,000,000 EUR	1 166 EUR	127,000,000 EUR	—	—	—	—	596,000,000 EUR	—	0 EUR	5 548 EUR	—	1 461 EUR	240,000,000 EUR	497,000,000 EUR	22 010 EUR	579,000,000 EUR	—	—	21 819 EUR	—	467,000,000 EUR	—	—	75,000,000 EUR	—	1 095 EUR	2 221 EUR	0 EUR	690,000,000 EUR	1 500 EUR	—	84,000,000 EUR	0 EUR	5 542 EUR	12 626 EUR	0 EUR	1 461 EUR	125,000,000 EUR	20 319 EUR	—	937,000,000 EUR	—	0 EUR	13 289 EUR	627,000,000 EUR	1 500 EUR	22 404 EUR	20 904 EUR	0 EUR	5 528 EUR	1 460 EUR
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	—	0 EUR	3 401 EUR	—	—	3 402 EUR	—	—	—	—	—	—	1,000,000 EUR	3 402 EUR	0 EUR	0 EUR	—	0 EUR	—	—	0 EUR	—	—	—	—	—	0 EUR	0 EUR	—	2 818 EUR	—	2 818 EUR	0 EUR	—	0 EUR	—	—	—	—	—	0 EUR	—	—	—	—	—	—	—	—	2 818 EUR	—	0 EUR	—	—	—	—	—	—	—	—	—
Other comprehensive income	—	0 EUR	495,000,000 EUR	—	—	495,000,000 EUR	—	—	—	—	—	—	0 EUR	1,000,000 EUR	0 EUR	0 EUR	—	497,000,000 EUR	—	—	0 EUR	—	—	—	—	—	0 EUR	0 EUR	—	217,000,000 EUR	—	1,000,000 EUR	0 EUR	—	0 EUR	—	—	—	—	—	215,000,000 EUR	—	—	—	—	—	—	—	—	217,000,000 EUR	—	0 EUR	—	—	—	—	—	—	—	—	—
Comprehensive income	—	0 EUR	3 896 EUR	—	—	3 897 EUR	—	—	—	—	—	—	1,000,000 EUR	3 400 EUR	0 EUR	0 EUR	—	497,000,000 EUR	—	—	0 EUR	—	—	—	—	—	0 EUR	0 EUR	—	3 035 EUR	—	2 819 EUR	0 EUR	—	0 EUR	—	—	—	—	—	215,000,000 EUR	—	—	—	—	—	—	—	—	3 035 EUR	—	0 EUR	—	—	—	—	—	—	—	—	—
Issue of equity	—	0 EUR	7,000,000 EUR	—	—	7,000,000 EUR	—	—	—	—	—	—	0 EUR	0 EUR	6,000,000 EUR	0 EUR	—	0 EUR	—	—	0 EUR	—	—	—	—	—	1,000,000 EUR	0 EUR	—	15,000,000 EUR	—	0 EUR	0 EUR	—	0 EUR	—	—	—	—	—	0 EUR	—	—	—	—	—	—	—	—	15,000,000 EUR	—	14,000,000 EUR	—	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	—	0 EUR	1 663 EUR	—	—	1 663 EUR	—	—	—	—	—	—	0 EUR	1 663 EUR	0 EUR	0 EUR	—	0 EUR	—	—	0 EUR	—	—	—	—	—	0 EUR	0 EUR	—	3 585 EUR	—	3 585 EUR	0 EUR	—	0 EUR	—	—	—	—	—	0 EUR	—	—	—	—	—	—	—	—	3 585 EUR	—	0 EUR	—	—	—	—	—	—	—	—	—
Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity	—	0 EUR	0 EUR	—	—	0 EUR	—	—	—	—	—	—	0 EUR	0 EUR	0 EUR	0 EUR	—	0 EUR	—	—	0 EUR	—	—	—	—	—	0 EUR	0 EUR	—	0 EUR	—	0 EUR	0 EUR	—	0 EUR	—	—	—	—	—	0 EUR	—	—	—	—	—	—	—	—	0 EUR	—	0 EUR	—	—	—	—	—	—	—	—	—
Increase (decrease) in equity	—	497,000,000 EUR	2 441 EUR	—	—	1 691 EUR	—	—	—	—	—	—	0 EUR	1 705 EUR	6,000,000 EUR	750,000,000 EUR	—	476,000,000 EUR	—	—	0 EUR	—	—	—	—	—	1,000,000 EUR	0 EUR	—	585,000,000 EUR	—	663,000,000 EUR	0 EUR	—	0 EUR	—	—	—	—	—	63,000,000 EUR	—	—	—	—	—	—	—	—	585,000,000 EUR	—	14,000,000 EUR	—	—	—	—	—	—	—	—	—