Statement Of Financial Position [Abstract]

Halma PLC - Filing #1662759

Concept	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2021-04-01	As at 2021-04-01	As at 2021-04-01	As at 2021-04-01	As at 2021-04-01	As at 2021-04-01	As at 2021-04-01	As at 2021-04-01	As at 2021-04-01	As at 2021-04-01	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2020-04-01	As at 2020-04-01	As at 2020-04-01	As at 2020-04-01	As at 2020-04-01	As at 2020-04-01	As at 2020-04-01	As at 2020-04-01	As at 2020-04-01	As at 2020-04-01
Statement of financial position [abstract]
Assets [abstract]
Property, plant and equipment	—	—	—	—	—	—	—	194,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	180,800,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Goodwill	—	—	—	—	—	—	—	908,700,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	808,500,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Intangible assets other than goodwill	—	—	—	—	—	—	—	325,200,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	290,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Investments in subsidiaries, joint ventures and associates reported in separate financial statements	—	—	—	—	—	—	—	8,200,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	9,300,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Deferred tax assets	—	—	—	—	—	—	—	2,400,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1,300,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Cash and cash equivalents	—	—	—	—	—	—	—	156,700,000 GBP	—	—	—	—	131,100,000 GBP	—	—	—	—	—	—	—	—	—	—	—	131,100,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	105,400,000 GBP	—
Assets	—	—	—	—	—	—	—	2,197,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1,877,900,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Equity and liabilities [abstract]
Equity [abstract]
Issued capital	—	—	—	—	—	—	—	38,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	38,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Retained earnings	—	—	—	—	—	—	—	1,274,800,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1,065,800,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Share premium	—	—	—	—	—	—	—	23,600,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	23,600,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Treasury shares	—	—	—	—	—	—	—	30,700,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	20,900,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Other reserves	—	—	—	—	—	—	—	19,900,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	13,600,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Equity attributable to owners of parent	—	—	—	—	—	—	—	1,402,700,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1,167,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Non-controlling interests	—	—	—	—	—	—	—	400,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	600,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Equity	200,000 GBP	30,700,000 GBP	400,000 GBP	38,000,000 GBP	117,100,000 GBP	23,600,000 GBP	1,274,800,000 GBP	1,403,100,000 GBP	400,000 GBP	19,900,000 GBP	1,065,800,000 GBP	23,600,000 GBP	1,167,600,000 GBP	600,000 GBP	38,000,000 GBP	20,900,000 GBP	700,000 GBP	73,200,000 GBP	13,600,000 GBP	200,000 GBP	200,000 GBP	20,900,000 GBP	1,065,800,000 GBP	13,600,000 GBP	1,167,600,000 GBP	38,000,000 GBP	23,600,000 GBP	700,000 GBP	600,000 GBP	73,200,000 GBP	200,000 GBP	148,700,000 GBP	23,600,000 GBP	38,000,000 GBP	7,700,000 GBP	700,000 GBP	14,300,000 GBP	949,200,000 GBP	1,136,900,000 GBP	100,000 GBP
Liabilities [abstract]
Deferred tax liabilities	—	—	—	—	—	—	—	58,500,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	40,600,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Liabilities	—	—	—	—	—	—	—	793,900,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	710,300,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—