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Retirement benefit obligations - RIPS (Details) - UK RIPS - GBP (£) £ in Millions | 1 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Feb. 24, 2022
Disclosure of defined benefit plans |  |
Insurance policy value |  | £ 1,159
Surplus refunded | £ 22 |

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition Represents information pertaining to policy value. + References No definition available. + Details
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Balance Type: | debit
Period Type: | instant

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- Definition Surplus refunded + References No definition available. + Details
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Namespace Prefix: | rto_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |