Statement Of Changes In Equity [Abstract]

Rentokil Initial PLC - Filing #1872937

Concept	As at 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	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	As at 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	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	As at 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	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	As at 2020-12-31	2020-01-01 to 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	As at 2019-12-31	As at 2019-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	4,098,000,000 GBP	—	—	—	—	—	4,000,000 GBP	763,000,000 GBP	—	1,000,000 GBP	9,000,000 GBP	1,723,000,000 GBP	3,302,000,000 GBP	25,000,000 GBP	511,000,000 GBP	2,998,000,000 GBP	3,000,000 GBP	—	—	3,166,000,000 GBP	1,723,000,000 GBP	—	—	1,927,000,000 GBP	—	—	1,264,000,000 GBP	9,000,000 GBP	2,000,000 GBP	211,000,000 GBP	—	—	7,000,000 GBP	19,000,000 GBP	1,000,000 GBP	—	—	—	10,000,000 GBP	4,000,000 GBP	3,031,000,000 GBP	1,000,000 GBP	1,000,000 GBP	18,000,000 GBP	—	—	—	208,000,000 GBP	1,926,000,000 GBP	7,000,000 GBP	—	1,131,000,000 GBP	—	1,723,000,000 GBP	10,000,000 GBP	156,000,000 GBP	7,000,000 GBP	1,002,000,000 GBP	2,844,000,000 GBP	1,868,000,000 GBP	1,723,000,000 GBP	1,000,000 GBP	18,000,000 GBP	1,000,000 GBP
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	—	—	—	232,000,000 GBP	232,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	263,000,000 GBP	263,000,000 GBP	186,000,000 GBP	—	—	—	—	—	—	186,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Other comprehensive income	—	—	—	295,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	12,000,000 GBP	—	67,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Comprehensive income	—	—	308,000,000 GBP	63,000,000 GBP	245,000,000 GBP	6,000,000 GBP	—	—	2,000,000 GBP	—	—	—	—	—	—	—	—	300,000,000 GBP	—	—	—	13,000,000 GBP	10,000,000 GBP	—	1,000,000 GBP	1,000,000 GBP	—	—	—	—	3,000,000 GBP	—	—	—	—	275,000,000 GBP	276,000,000 GBP	119,000,000 GBP	—	—	—	—	—	—	177,000,000 GBP	1,000,000 GBP	5,000,000 GBP	—	—	—	58,000,000 GBP	—	52,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—
Issue of equity	—	6,000,000 GBP	—	6,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1,000,000 GBP	—	—	—	—	1,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	2,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	10,000,000 GBP	8,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	—	—	—	18,000,000 GBP	18,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	10,000,000 GBP	10,000,000 GBP	6,000,000 GBP	—	—	—	—	—	—	6,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—