Statement Of Changes In Equity [Abstract]

MJ GLEESON PLC - Filing #1792458

Concept	As at 2022-06-30	As at 2022-06-30	2021-07-01 to 2022-06-30	2021-07-01 to 2022-06-30	As at 2022-06-30	2021-07-01 to 2022-06-30	2021-07-01 to 2022-06-30	As at 2022-06-30	2021-07-01 to 2022-06-30	2021-07-01 to 2022-06-30	2021-07-01 to 2022-06-30	As at 2022-06-30	As at 2021-06-30	2020-07-01 to 2021-06-30	2020-07-01 to 2021-06-30	2020-07-01 to 2021-06-30	As at 2021-06-30	2020-07-01 to 2021-06-30	As at 2021-06-30	As at 2021-06-30	2020-07-01 to 2021-06-30	As at 2021-06-30	As at 2020-06-30	As at 2020-06-30	As at 2020-06-30	As at 2020-06-30	As at 2020-06-30
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	255,638,000 GBP	15,843,000 GBP	—	—	272,176,000 GBP	—	—	471,000 GBP	—	—	—	1,166,000 GBP	244,931,000 GBP	—	—	—	15,843,000 GBP	—	1,165,000 GBP	227,923,000 GBP	—	– GBP	195,601,000 GBP	15,843,000 GBP	1,161,000 GBP	212,605,000 GBP	– GBP
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	—	—	35,089,000 GBP	– GBP	—	35,089,000 GBP	– GBP	—	– GBP	45,511,000 GBP	10,422,000 GBP	—	—	– GBP	– GBP	33,872,000 GBP	—	33,872,000 GBP	—	—	– GBP	—	—	—	—	—	—
Other comprehensive income	—	—	120,000 GBP	– GBP	—	120,000 GBP	– GBP	—	– GBP	120,000 GBP	– GBP	—	—	– GBP	– GBP	335,000 GBP	—	335,000 GBP	—	—	– GBP	—	—	—	—	—	—
Comprehensive income	—	—	35,209,000 GBP	– GBP	—	35,209,000 GBP	– GBP	—	– GBP	45,631,000 GBP	10,422,000 GBP	—	—	– GBP	– GBP	34,207,000 GBP	—	34,207,000 GBP	—	—	– GBP	—	—	—	—	—	—
Issue of equity	—	—	1,000 GBP	1,000 GBP	—	– GBP	– GBP	—	– GBP	—	—	—	—	4,000 GBP	– GBP	– GBP	—	4,000 GBP	—	—	– GBP	—	—	—	—	—	—
Dividends recognised as distributions to owners	—	—	9,338,000 GBP	– GBP	—	9,338,000 GBP	– GBP	—	– GBP	—	—	—	—	– GBP	– GBP	2,913,000 GBP	—	2,913,000 GBP	—	—	– GBP	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	—	—	1,568,000 GBP	– GBP	—	1,568,000 GBP	– GBP	—	– GBP	—	—	—	—	– GBP	– GBP	1,089,000 GBP	—	1,089,000 GBP	—	—	– GBP	—	—	—	—	—	—