Analysis Of Income And Expense [Abstract]

Rentokil Initial PLC - Filing #2010974

Concept	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	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	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	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	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	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
Analysis of income and expense [abstract]
Material income and expense [abstract]
Operating expense	—	4,711,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	3,373,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	2,610,000,000 GBP	—
Miscellaneous other comprehensive income [abstract]
Other comprehensive income, before tax, exchange differences on translation of foreign operations and hedges of net investments in foreign operations [abstract]
Other comprehensive income, before tax, exchange differences on translation of foreign operations	– GBP	352,000,000 GBP	352,000,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	352,000,000 GBP	– GBP	– GBP	– GBP	– GBP	232,000,000 GBP	232,000,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	232,000,000 GBP	– GBP	– GBP	– GBP	– GBP	18,000,000 GBP	– GBP	– GBP	– GBP	18,000,000 GBP	– GBP	18,000,000 GBP	– GBP
Other comprehensive income, before tax, hedges of net investments in foreign operations	– GBP	109,000,000 GBP	109,000,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	109,000,000 GBP	– GBP	– GBP	– GBP	– GBP	68,000,000 GBP	68,000,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	68,000,000 GBP	– GBP	– GBP	– GBP	– GBP	15,000,000 GBP	– GBP	– GBP	– GBP	15,000,000 GBP	– GBP	15,000,000 GBP	– GBP
Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract]
Share of profit (loss) of associates accounted for using equity method	—	9,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	9,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	8,000,000 GBP	—
Income tax relating to components of other comprehensive income [abstract]
Income tax relating to components of other comprehensive income	—	6,000,000 GBP	– GBP	—	– GBP	6,000,000 GBP	– GBP	—	—	– GBP	—	—	– GBP	– GBP	11,000,000 GBP	11,000,000 GBP	– GBP	—	—	—	—	—	– GBP	—	– GBP	—	—	—	– GBP	—	– GBP	—	—	– GBP	2,000,000 GBP	2,000,000 GBP
Comprehensive income, continuing and discontinued operations [abstract]
Comprehensive income	– GBP	156,000,000 GBP	231,000,000 GBP	– GBP	– GBP	387,000,000 GBP	– GBP	9,000,000 GBP	243,000,000 GBP	– GBP	– GBP	3,000,000 GBP	– GBP	308,000,000 GBP	63,000,000 GBP	245,000,000 GBP	– GBP	6,000,000 GBP	– GBP	– GBP	2,000,000 GBP	– GBP	– GBP	300,000,000 GBP	– GBP	– GBP	13,000,000 GBP	10,000,000 GBP	1,000,000 GBP	1,000,000 GBP	– GBP	– GBP	3,000,000 GBP	– GBP	275,000,000 GBP	276,000,000 GBP
Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract]
Comprehensive income, attributable to owners of parent	—	156,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	63,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	275,000,000 GBP	—
Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract]
Comprehensive income, attributable to non-controlling interests	—	– GBP	—	—	—	—	—	—	—	—	—	—	—	—	– GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	– GBP	—