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TRADE RECEIVABLES (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Receivables [Abstract] |  |
Gross trade receivables | $ 143,191 | $ 139,465
Allowance for expected credit losses | (16,854) | (16,699)
Net trade receivables | $ 126,337 | $ 122,766

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- Definition Gross trade receivables + References No definition available. + Details
Name: | rol_AccountsNotesAndLoansReceivableGrossCurrent
Namespace Prefix: | rol_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | rol_AccountsNotesAndLoansReceivableNet
Namespace Prefix: | rol_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Allowance for doubtful accounts + References No definition available. + Details
Name: | rol_AllowanceForAccountsNotesandLoansReceivableNet1
Namespace Prefix: | rol_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_ReceivablesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration