Statement Of Changes In Equity [Abstract]

HARWORTH GROUP PLC - Filing #1602998

Concept	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	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	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	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	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	2020-01-01 to 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 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	24,000 GBP	275,556,000 GBP	257,000 GBP	—	199,629,000 GBP	—	—	577,984,000 GBP	—	—	45,667,000 GBP	24,627,000 GBP	—	32,272,000 GBP	—	—	—	132,833,000 GBP	253,208,000 GBP	—	32,253,000 GBP	—	—	45,667,000 GBP	73,000 GBP	24,567,000 GBP	—	—	488,712,000 GBP	—	257,000 GBP	—	116,121,000 GBP	463,779,000 GBP	24,359,000 GBP	45,667,000 GBP	245,251,000 GBP	67,000 GBP	257,000 GBP	32,191,000 GBP
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	—	—	—	– GBP	—	– GBP	– GBP	—	– GBP	– GBP	—	—	– GBP	—	93,990,000 GBP	93,990,000 GBP	25,796,000 GBP	—	—	– GBP	—	– GBP	25,796,000 GBP	—	—	—	– GBP	– GBP	—	– GBP	—	– GBP	—	—	—	—	—	—	—	—
Other comprehensive income	—	—	—	—	—	—	—	—	—	—	—	—	—	—	595,000 GBP	—	443,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Comprehensive income	—	—	—	– GBP	—	– GBP	66,796,000 GBP	—	– GBP	– GBP	—	—	– GBP	—	94,585,000 GBP	27,789,000 GBP	25,353,000 GBP	—	—	– GBP	—	– GBP	8,641,000 GBP	—	—	—	16,712,000 GBP	– GBP	—	– GBP	—	– GBP	—	—	—	—	—	—	—	—
Issue of equity	—	—	—	– GBP	—	6,000 GBP	– GBP	—	60,000 GBP	– GBP	—	—	19,000 GBP	—	73,000 GBP	– GBP	270,000 GBP	—	—	– GBP	—	– GBP	– GBP	—	—	—	– GBP	62,000 GBP	—	208,000 GBP	—	– GBP	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	—	—	—	– GBP	—	– GBP	– GBP	—	– GBP	– GBP	—	—	– GBP	—	5,913,000 GBP	5,913,000 GBP	1,077,000 GBP	—	—	– GBP	—	– GBP	1,077,000 GBP	—	—	—	– GBP	– GBP	—	– GBP	—	– GBP	—	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	—	—	—	– GBP	—	76,000 GBP	– GBP	—	– GBP	– GBP	—	—	– GBP	—	548,000 GBP	472,000 GBP	387,000 GBP	—	—	6,000 GBP	—	– GBP	393,000 GBP	—	—	—	– GBP	– GBP	—	– GBP	—	– GBP	—	—	—	—	—	—	—	—