Name:	ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The amount of expense arising from equity-settled share-based payment transactions in which the goods or services received did not qualify for recognition as assets. [Refer: Expense from share-based payment transactions]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2023-01-01
-Paragraph 51
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_51_a&doctype=Standard
-URIDate 2023-03-23

Name:	ifrs-full_ExpenseFromEquitysettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Number of share-based arrangement plans operated by the entity.

No definition available.

Name:	rto_NumberOfSharesBasedPaymentArrangementPlans
Namespace Prefix:	rto_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Percentage of awards issuable based on performance against certain strategic and financial measures over the vesting period, under the share-based payment arrangement.

No definition available.

Name:	rto_PercentageOfAwardsBasedOnPerformanceAgainstCertainStrategicAndFinancialMeasuresUnderShareBasedPaymentArrangement
Namespace Prefix:	rto_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Percentage of awards issuable based on total shareholder return (TSR), under the share-based payment arrangement.

No definition available.