Statement Of Financial Position [Abstract]

Jupiter Fund Management PLC - Filing #1583786

Concept	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 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 financial position [abstract]
Assets [abstract]
Property, plant and equipment	—	—	—	44,100,000 GBP	—	—	—	—	—	—	—	—	—	—	—	47,400,000 GBP	—	—	—	—	—	—	—	—
Goodwill	—	—	—	570,600,000 GBP	—	—	—	—	—	—	—	—	—	—	—	570,600,000 GBP	—	—	—	—	—	—	—	—
Intangible assets other than goodwill	—	—	—	52,100,000 GBP	—	—	—	—	—	—	—	—	—	—	—	70,800,000 GBP	—	—	—	—	—	—	—	—
Deferred tax assets	—	—	—	27,600,000 GBP	—	—	—	—	—	—	—	—	—	—	—	20,000,000 GBP	—	—	—	—	—	—	—	—
Cash and cash equivalents	—	—	—	197,300,000 GBP	—	—	—	—	—	—	—	—	—	—	—	188,100,000 GBP	—	—	—	—	179,400,000 GBP	—	—	—
Assets	—	—	—	1,340,700,000 GBP	—	—	—	—	—	—	—	—	—	—	—	1,345,800,000 GBP	—	—	—	—	—	—	—	—
Equity and liabilities [abstract]
Equity [abstract]
Issued capital	—	—	—	11,100,000 GBP	—	—	—	—	—	—	—	—	—	—	—	11,100,000 GBP	—	—	—	—	—	—	—	—
Retained earnings	—	—	—	639,700,000 GBP	—	—	—	—	—	—	—	—	—	—	—	622,500,000 GBP	—	—	—	—	—	—	—	—
Treasury shares	—	—	—	400,000 GBP	—	—	—	—	—	—	—	—	—	—	—	200,000 GBP	—	—	—	—	—	—	—	—
Other reserves	—	—	—	250,100,000 GBP	—	—	—	—	—	—	—	—	—	—	—	250,100,000 GBP	—	—	—	—	—	—	—	—
Equity attributable to owners of parent	—	—	—	900,800,000 GBP	—	—	—	—	—	—	—	—	—	—	—	886,300,000 GBP	—	—	—	—	—	—	—	—
Non-controlling interests	—	—	—	– GBP	—	—	—	—	—	—	—	—	—	—	—	200,000 GBP	—	—	—	—	—	—	—	—
Equity	400,000 GBP	639,700,000 GBP	250,100,000 GBP	900,800,000 GBP	900,800,000 GBP	– GBP	300,000 GBP	11,100,000 GBP	622,500,000 GBP	200,000 GBP	886,300,000 GBP	11,100,000 GBP	200,000 GBP	2,800,000 GBP	250,100,000 GBP	886,100,000 GBP	611,700,000 GBP	– GBP	8,000,000 GBP	2,100,000 GBP	611,700,000 GBP	592,700,000 GBP	300,000 GBP	9,200,000 GBP
Liabilities [abstract]
Current tax liabilities	—	—	—	3,500,000 GBP	—	—	—	—	—	—	—	—	—	—	—	8,400,000 GBP	—	—	—	—	—	—	—	—
Deferred tax liabilities	—	—	—	10,300,000 GBP	—	—	—	—	—	—	—	—	—	—	—	12,500,000 GBP	—	—	—	—	—	—	—	—
Liabilities	—	—	—	439,900,000 GBP	—	—	—	—	—	—	—	—	—	—	—	459,700,000 GBP	—	—	—	—	—	—	—	—
Equity and liabilities	—	—	—	1,340,700,000 GBP	—	—	—	—	—	—	—	—	—	—	—	1,345,800,000 GBP	—	—	—	—	—	—	—	—