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Commitments and Contingencies - Additional Information (Detail) $ in Billions | 9 Months Ended
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Sep. 30, 2018 USD ($)
Commitments And Contingencies Disclosure [Abstract] |
Transportation commitments future minimum transportation fees due to nine months change | $ 2.4
Period of transportation commitments future minimum transportation fees due to nine months change | 20 years
Transportation commitments future minimum transportation fees due to nine months change, end year | 2038

X
- Definition Change in the minimum commitment related to transportation agreements that must be made within the specified time period of the agreement. + References No definition available. + Details
Name: | rrc_ChangeInTransportationCommitmentsFutureMinimumTransportationFeesDue
Namespace Prefix: | rrc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of terms transportation commitments future minimum transportation fees due during period. + References No definition available. + Details
Name: | rrc_NumberOfTermsTransportationCommitmentsFutureMinimumTransportationFeesDueDuringPeriod
Namespace Prefix: | rrc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Transportation commitments future minimum transportation fees due end year. + References No definition available. + Details
Name: | rrc_TransportationCommitmentsFutureMinimumTransportationFeesDueEndYear
Namespace Prefix: | rrc_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

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