Statement Of Changes In Equity [Abstract]

Kontron AG (formerly S&T AG) - Filing #1081266

Concept	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	46,848 EUR	239,431 EUR	—	—	423,263 EUR	—	—	8,405 EUR	418,557 EUR	168,283 EUR	—	4,706 EUR	66,096 EUR	—	—	—	210,354 EUR	5,432 EUR	—	66,096 EUR	404,038 EUR	—	15,591 EUR	—	26,262 EUR	169,441 EUR	—	409,470 EUR	—	—	—	372,689 EUR	12,363 EUR	385,052 EUR	170,057 EUR	154,745 EUR	3,562 EUR	14,647 EUR	66,096 EUR
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	704,000 EUR	—	—	0 EUR	48,260 EUR	—	0 EUR	0 EUR	—	—	—	0 EUR	—	—	48,964 EUR	48,260 EUR	54,623 EUR	—	—	0 EUR	—	—	55,609 EUR	—	0 EUR	—	—	0 EUR	—	986,000 EUR	0 EUR	55,609 EUR	—	—	—	—	—	—	—	—
Other comprehensive income	829,000 EUR	—	—	0 EUR	7,186 EUR	—	7,186 EUR	0 EUR	—	—	—	0 EUR	—	—	8,015 EUR	0 EUR	13,008 EUR	—	—	0 EUR	—	—	0 EUR	—	12,029 EUR	—	—	0 EUR	—	979,000 EUR	0 EUR	12,029 EUR	—	—	—	—	—	—	—	—
Comprehensive income	1,533 EUR	—	—	0 EUR	55,446 EUR	—	7,186 EUR	0 EUR	—	—	—	0 EUR	—	—	56,979 EUR	48,260 EUR	41,615 EUR	—	—	0 EUR	—	—	55,609 EUR	—	12,029 EUR	—	—	0 EUR	—	1,965 EUR	0 EUR	43,580 EUR	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	1,018 EUR	—	—	0 EUR	19,183 EUR	—	0 EUR	0 EUR	—	—	—	0 EUR	—	—	20,201 EUR	19,183 EUR	2,468 EUR	—	—	0 EUR	—	—	0 EUR	—	0 EUR	—	—	0 EUR	—	2,468 EUR	0 EUR	0 EUR	—	—	—	—	—	—	—	—
Increase (decrease) through treasury share transactions, equity	0 EUR	—	—	20,586 EUR	20,586 EUR	—	0 EUR	0 EUR	—	—	—	0 EUR	—	—	20,586 EUR	0 EUR	12,191 EUR	—	—	12,191 EUR	—	—	0 EUR	—	0 EUR	—	—	0 EUR	—	0 EUR	0 EUR	12,191 EUR	—	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	0 EUR	—	—	0 EUR	1,308 EUR	—	0 EUR	1,308 EUR	—	—	—	0 EUR	—	—	1,308 EUR	0 EUR	5,442 EUR	—	—	576,000 EUR	—	—	0 EUR	—	0 EUR	—	—	0 EUR	—	0 EUR	4,866 EUR	5,442 EUR	—	—	—	—	—	—	—	—