Statement Of Comprehensive Income [Abstract]

Essentra PLC - Filing #1600165

Concept	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31
Statement of comprehensive income [abstract]
Profit (loss)	1 .4 GBP	—	—	—	—	—	—	28,300,000 GBP	26,900,000 GBP	3,300,000 GBP	—	1,500,000 GBP	—	1,800,000 GBP	—	—	—	—
Other comprehensive income [abstract]
Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract]
Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans	—	—	—	—	—	—	—	28,500,000 GBP	—	—	—	6,700,000 GBP	—	—	—	—	—	—
Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract]
Exchange differences on translation [abstract]
Other comprehensive income, before tax, exchange differences on translation of foreign operations	—	—	—	—	—	—	—	23,400,000 GBP	—	—	—	9,300,000 GBP	—	—	—	—	—	—
Hedges of net investment in foreign operations [abstract]
Other comprehensive income, before tax, hedges of net investments in foreign operations	—	—	—	—	—	—	—	400,000 GBP	—	—	—	3,300,000 GBP	—	—	—	—	—	—
Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract]
Income tax relating to remeasurements of defined benefit plans included in other comprehensive income	—	—	—	—	—	—	—	7,900,000 GBP	—	—	—	2,100,000 GBP	—	—	—	—	—	—
Income tax relating to components of other comprehensive income that will be reclassified to profit or loss [abstract]
Income tax relating to components of other comprehensive income that will be reclassified to profit or loss	—	—	—	—	—	—	—	400,000 GBP	—	—	—	500,000 GBP	—	—	—	—	—	—
Other comprehensive income	100,000 GBP	23,400,000 GBP	—	1,400,000 GBP	—	—	—	4,300,000 GBP	20,600,000 GBP	4,600,000 GBP	—	18,600,000 GBP	13,100,000 GBP	500,000 GBP	400,000 GBP	—	—	—
Comprehensive income	1,300,000 GBP	23,400,000 GBP	- GBP	1,400,000 GBP	- GBP	- GBP	- GBP	24,000,000 GBP	47,500,000 GBP	7,900,000 GBP	- GBP	20,100,000 GBP	13,100,000 GBP	1,300,000 GBP	400,000 GBP	- GBP	- GBP	- GBP
Comprehensive income attributable to [abstract]
Comprehensive income, attributable to owners of parent	—	—	—	—	—	—	—	22,700,000 GBP	—	—	—	21,400,000 GBP	—	—	—	—	—	—
Comprehensive income, attributable to non-controlling interests	—	—	—	—	—	—	—	1,300,000 GBP	—	—	—	1,300,000 GBP	—	—	—	—	—	—