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PENSION AND POST RETIREMENT BENEFIT PLAN (Details Narrative) $ in Thousands	Sep. 30, 2019 USD ($)
Retirement Benefits [Abstract]
Remaining Pension Assets	$ 25,900

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- Definition

Remaining Pension Assets

+ References

No definition available.

+ Details

Name:	rol_RemainingPensionAssets
Namespace Prefix:	rol_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- References

No definition available.

+ Details

Name:	us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration