Statement Of Changes In Equity [Abstract]

Auction Technology Group PLC - Filing #1822036

Concept	As at 2022-09-30	2021-10-01 to 2022-09-30	2021-10-01 to 2022-09-30	2021-10-01 to 2022-09-30	As at 2022-09-30	2021-10-01 to 2022-09-30	2021-10-01 to 2022-09-30	As at 2022-09-30	2021-10-01 to 2022-09-30	As at 2022-09-30	As at 2022-09-30	As at 2022-09-30	As at 2022-09-30	2021-10-01 to 2022-09-30	2021-10-01 to 2022-09-30	As at 2022-09-30	As at 2021-09-30	As at 2021-09-30	2020-10-01 to 2021-09-30	2020-10-01 to 2021-09-30	2020-10-01 to 2021-09-30	2020-10-01 to 2021-09-30	As at 2021-09-30	As at 2021-09-30	2020-10-01 to 2021-09-30	As at 2021-09-30	2020-10-01 to 2021-09-30	As at 2021-09-30	2020-10-01 to 2021-09-30	As at 2021-09-30	As at 2021-09-30	2020-10-01 to 2021-09-30	As at 2020-09-30	As at 2020-09-30	As at 2020-09-30	As at 2020-09-30	As at 2020-09-30	As at 2020-09-30	As at 2020-09-30	As at 2020-09-30
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	238,385,000 GBP	—	—	—	235,903,000 GBP	—	—	539,323,000 GBP	—	36,412,000 GBP	34,690,000 GBP	12,000 GBP	66,740,000 GBP	—	—	5,000 GBP	1,649,000 GBP	238,385,000 GBP	—	—	—	—	5,000 GBP	3,213,000 GBP	—	33,287,000 GBP	—	439,454,000 GBP	—	12,000 GBP	235,903,000 GBP	—	440,000 GBP	16,388,000 GBP	11,000 GBP	276,000 GBP	– GBP	– GBP	15,416,000 GBP	1,125,000 GBP
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	—	– GBP	– GBP	– GBP	—	6,127,000 GBP	– GBP	—	– GBP	—	—	—	—	– GBP	6,127,000 GBP	—	—	—	– GBP	– GBP	– GBP	– GBP	—	—	– GBP	—	– GBP	—	27,364,000 GBP	—	—	27,364,000 GBP	—	—	—	—	—	—	—	—
Other comprehensive income	—	– GBP	– GBP	– GBP	—	3,074,000 GBP	69,953,000 GBP	—	– GBP	—	—	—	—	– GBP	73,027,000 GBP	—	—	—	2,773,000 GBP	– GBP	– GBP	– GBP	—	—	– GBP	—	– GBP	—	– GBP	—	—	2,773,000 GBP	—	—	—	—	—	—	—	—
Comprehensive income	—	– GBP	– GBP	– GBP	—	3,053,000 GBP	69,953,000 GBP	—	– GBP	—	—	—	—	– GBP	66,900,000 GBP	—	—	—	2,773,000 GBP	– GBP	– GBP	– GBP	—	—	– GBP	—	– GBP	—	27,364,000 GBP	—	—	30,137,000 GBP	—	—	—	—	—	—	—	—
Issue of equity	—	28,346,000 GBP	– GBP	– GBP	—	– GBP	– GBP	—	– GBP	—	—	—	—	– GBP	28,346,000 GBP	—	—	—	– GBP	– GBP	235,903,000 GBP	– GBP	—	—	6,000 GBP	—	237,260,000 GBP	—	– GBP	—	—	473,169,000 GBP	—	—	—	—	—	—	—	—
Increase (decrease) through treasury share transactions, equity	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	– GBP	5,000 GBP	– GBP	– GBP	—	—	5,000 GBP	—	– GBP	—	– GBP	—	—	– GBP	—	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	—	4,695,000 GBP	– GBP	– GBP	—	78,000 GBP	– GBP	—	– GBP	—	—	—	—	– GBP	4,773,000 GBP	—	—	—	– GBP	– GBP	– GBP	1,373,000 GBP	—	—	– GBP	—	– GBP	—	10,401,000 GBP	—	—	11,774,000 GBP	—	—	—	—	—	—	—	—