Statement Of Changes In Equity [Abstract]

Kontron AG (formerly S&T AG) - Filing #1131860

Concept	2020-01-01 to 2020-12-31	As at 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	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	2019-01-01 to 2019-12-31	As at 2019-12-31	2019-01-01 to 2019-12-31	2019-01-01 to 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	2019-01-01 to 2019-12-31	As at 2019-12-31	As at 2019-12-31	2019-01-01 to 2019-12-31	As at 2019-12-31	2019-01-01 to 2019-12-31	2019-01-01 to 2019-12-31	2019-01-01 to 2019-12-31	As at 2018-12-31	As at 2018-12-31	As at 2018-12-31	As at 2018-12-31	As at 2018-12-31	As at 2018-12-31	As at 2018-12-31	As at 2018-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	210,354 EUR	5,432 EUR	404,038 EUR	—	66,096 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	—	—	—	177,414 EUR	11,306 EUR	355,969 EUR	0 EUR	367,275 EUR	3,745 EUR	66,089 EUR	116,211 EUR
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	54,623 EUR	—	—	—	0 EUR	—	55,609 EUR	—	0 EUR	—	—	0 EUR	—	986,000 EUR	0 EUR	55,609 EUR	—	49,109 EUR	—	49,109 EUR	403,000 EUR	—	—	—	49,512 EUR	—	—	0 EUR	—	0 EUR	0 EUR	0 EUR	—	—	—	—	—	—	—	—
Other comprehensive income	13,008 EUR	—	—	—	0 EUR	—	0 EUR	—	12,029 EUR	—	—	0 EUR	—	979,000 EUR	0 EUR	12,029 EUR	—	183,000 EUR	—	0 EUR	664,000 EUR	—	—	—	847,000 EUR	—	—	183,000 EUR	—	0 EUR	0 EUR	0 EUR	—	—	—	—	—	—	—	—
Comprehensive income	41,615 EUR	—	—	—	0 EUR	—	55,609 EUR	—	12,029 EUR	—	—	0 EUR	—	1,965 EUR	0 EUR	43,580 EUR	—	49,292 EUR	—	49,109 EUR	1,067 EUR	—	—	—	50,359 EUR	—	—	183,000 EUR	—	0 EUR	0 EUR	0 EUR	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	2,468 EUR	—	—	—	0 EUR	—	0 EUR	—	0 EUR	—	—	0 EUR	—	2,468 EUR	0 EUR	0 EUR	—	10,575 EUR	—	10,575 EUR	0 EUR	—	—	—	10,575 EUR	—	—	0 EUR	—	0 EUR	0 EUR	0 EUR	—	—	—	—	—	—	—	—
Increase (decrease) through treasury share transactions, equity	12,191 EUR	—	—	—	12,191 EUR	—	0 EUR	—	0 EUR	—	—	0 EUR	—	0 EUR	0 EUR	12,191 EUR	—	14,647 EUR	—	0 EUR	0 EUR	—	—	—	14,647 EUR	—	—	0 EUR	—	0 EUR	0 EUR	14,647 EUR	—	—	—	—	—	—	—	—
Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	183,000 EUR	—	0 EUR	1,065 EUR	—	—	—	882,000 EUR	—	—	0 EUR	—	0 EUR	183,000 EUR	0 EUR	—	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	5,442 EUR	—	—	—	576,000 EUR	—	0 EUR	—	0 EUR	—	—	0 EUR	—	0 EUR	4,866 EUR	5,442 EUR	—	1,245 EUR	—	0 EUR	0 EUR	—	—	—	1,245 EUR	—	—	0 EUR	—	7,000 EUR	1,238 EUR	0 EUR	—	—	—	—	—	—	—	—