Proved Developed And Undeveloped Reserve Revisions Of Previous Estimates Increase Decrease One

No definition available.

Name:	clr_ProvedDevelopedAndUndevelopedReserveRevisionsOfPreviousEstimatesIncreaseDecreaseOne
Namespace Prefix:	clr_
Data Type:	num:energyItemType
Balance Type:	na
Period Type:	duration

- Definition

Energy measure of proved reserve of oil and gas, stated in a unit of energy. For example, but not limited to, barrel of oil equivalents (BOE) or one thousand cubic feet of natural gas equivalent (Mcfe).

+ References

+ Details

Name:	us-gaap_ProvedDevelopedAndUndevelopedReserveNetEnergy
Namespace Prefix:	us-gaap_
Data Type:	num:energyItemType
Balance Type:	na
Period Type:	instant

- Definition

The net quantity of proved reserves as of the balance sheet date. Proved oil reserves are the estimated quantities of crude oil and natural gas liquids which geological and engineering data demonstrate with reasonable certainty to be recoverable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 235
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61831-109447

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-10.(a)(2))
-URI http://asc.fasb.org/extlink&oid=82851474&loc=d3e511914-122862

+ Details

Name:	us-gaap_ProvedDevelopedAndUndevelopedReservesNet
Namespace Prefix:	us-gaap_
Data Type:	num:volumeItemType
Balance Type:	na
Period Type:	instant

- Definition

Revisions represent changes in previous estimates of proved reserves, either upward or downward, resulting from new information (except for an increase in proved acreage) normally obtained from development drilling and production history or resulting from change in economic factors.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 235
-Section 50
-Paragraph 5
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61831-109447

+ Details

Name:	us-gaap_ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	num:volumeItemType
Balance Type:	na
Period Type:	duration

- Definition

Energy measure of interests in proved developed reserves of crude oil, including condensate and natural gas liquids, natural gas, synthetic oil and gas, or other nonrenewable natural resource that is intended to be upgraded into synthetic oil and gas.

+ References

No definition available.

+ Details

Name:	us-gaap_ProvedDevelopedReservesBOE1
Namespace Prefix:	us-gaap_
Data Type:	num:energyItemType
Balance Type:	na
Period Type:	instant

- Definition

Net quantities of an enterprise's interests in proved developed reserves of either crude oil (including condensate and natural gas liquids), natural gas, synthetic oil and gas, or other nonrenewable natural resource that is intended to be upgraded into synthetic oil and gas as of the beginning and the end of the year. "Net" quantities of reserves include those relating to the enterprise's operating and nonoperating interests in properties. Quantities of reserves relating to royalty interests owned are included in "net" quantities if the necessary information is available to the enterprise. "Net" quantities does not include reserves relating to interests of others in properties owned by the enterprise. The unit of measure for reserve quantities is defined as "barrels" for oil and synthetic oil reserves or "cubic feet" or "cubic meters" for natural gas and synthetic gas reserves.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 235
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61884-109447

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 235
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61797-109447

+ Details

Name:	us-gaap_ProvedDevelopedReservesVolume
Namespace Prefix:	us-gaap_
Data Type:	num:volumeItemType
Balance Type:	na
Period Type:	instant

- Definition

Energy measure of proved undeveloped reserves of crude oil, including condensate and natural gas liquids, natural gas, synthetic oil and gas, or other nonrenewable natural resource that is intended to be upgraded into synthetic oil and gas.

+ References

No definition available.

+ Details

Name:	us-gaap_ProvedUndevelopedReserveBOE1
Namespace Prefix:	us-gaap_
Data Type:	num:energyItemType
Balance Type:	na
Period Type:	instant

- Definition

Net quantities of an enterprise's interests in proved undeveloped reserves of either crude oil (including condensate and natural gas liquids), natural gas, synthetic oil and gas, or other renewable natural resource that is intended to be upgraded into synthetic oil and gas as of the beginning and the end of the year. "Net" quantities of reserves include those relating to the enterprise's operating and nonoperating interests in properties. Quantities of reserves relating to royalty interests owned are included in "net" quantities if the necessary information is available to the enterprise. "Net" quantities does not include reserves relating to interests of others in properties owned by the enterprise. The unit of measure for reserve quantities is defined as "barrels" for oil and synthetic oil reserves or "cubic feet" or "cubic meters" for natural gas and synthetic gas reserves.

+ References

+ Details

Name:	us-gaap_ProvedUndevelopedReserveVolume
Namespace Prefix:	us-gaap_
Data Type:	num:volumeItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- Details

Name:	us-gaap_EnergyAxis=us-gaap_CrudeOilMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ReserveQuantitiesByTypeOfReserveAxis=clr_ProvedUndevelopedReservesDomain
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_EnergyAxis=us-gaap_NaturalGasReservesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ReserveQuantitiesByTypeOfReserveAxis=us-gaap_NaturalGasReservesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	clr_TypeofRevisionAxis=clr_PriceDrivenDomain
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ReserveQuantitiesByTypeOfReserveAxis=clr_ProvedReservesDomain
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	clr_TypeofRevisionAxis=us-gaap_ProductionTypeDomain
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	clr_TypeofRevisionAxis=clr_OtherDomain
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Supplemental Crude Oil and Natural Gas Information - Schedule of Proved Developed and Undeveloped Oil and Gas Reserve Quantities (Detail)	12 Months Ended
	Dec. 31, 2017 MBoe MMcf MBbls	Dec. 31, 2016 MBoe MMcf MBbls	Dec. 31, 2015 MBoe MMcf MBbls	Dec. 31, 2014 MBoe MMcf
Reserve Quantities [Line Items]
Proved Developed Reserves (MBOE) \| MBoe	601,901	518,646	525,188
Proved Undeveloped Reserve (MBOE) \| MBoe	729,094	756,218	700,623
Proved Developed and Undeveloped Reserve, Net (MBOE) \| MBoe	1,330,995	1,274,864	1,225,811	1,351,091
Crude Oil [Member]
Reserve Quantities [Line Items]
Proved Developed Reserves (Volume) \| MBbls	318,707	290,210	326,798
Proved Undeveloped Reserve (Volume) \| MBbls	322,242	353,018	373,716
Proved Developed and Undeveloped Reserves, Net \| MBbls	640,949	643,228	700,514
Proved Undeveloped Reserves [Domain]
Reserve Quantities [Line Items]
Revisions of previous estimates \| MBoe	89
Proved Undeveloped Reserves [Domain] \| Crude Oil [Member]
Reserve Quantities [Line Items]
Revisions of previous estimates \| MBbls	41
Proved Undeveloped Reserves [Domain] \| Natural Gas [Member]
Reserve Quantities [Line Items]
Revisions of previous estimates	290
Natural Gas [Member]
Reserve Quantities [Line Items]
Revisions of previous estimates	(25,390)	(63,057)	(302,143)
Proved Developed Reserves (Volume)	1,699,161	1,370,620	1,190,343
Proved Undeveloped Reserve (Volume)	2,441,120	2,419,198	1,961,443
Proved Developed and Undeveloped Reserves, Net	4,140,281	3,789,818	3,151,786	2,908,386
Price Driven [Domain] \| Proved Reserves [Domain]
Reserve Quantities [Line Items]
Revisions of previous estimates \| MBoe	42
Price Driven [Domain] \| Proved Reserves [Domain] \| Crude Oil [Member]
Reserve Quantities [Line Items]
Revisions of previous estimates \| MBbls	29
Price Driven [Domain] \| Proved Reserves [Domain] \| Natural Gas [Member]
Reserve Quantities [Line Items]
Revisions of previous estimates	78
Production Type [Domain] \| Proved Reserves [Domain]
Reserve Quantities [Line Items]
Revisions of previous estimates \| MBoe	30
Production Type [Domain] \| Proved Reserves [Domain] \| Crude Oil [Member]
Reserve Quantities [Line Items]
Revisions of previous estimates \| MBbls	59
Production Type [Domain] \| Proved Reserves [Domain] \| Natural Gas [Member]
Reserve Quantities [Line Items]
Revisions of previous estimates	173
Other [Domain] \| Proved Reserves [Domain]
Reserve Quantities [Line Items]
Revisions of previous estimates \| MBoe	5
Other [Domain] \| Proved Reserves [Domain] \| Crude Oil [Member]
Reserve Quantities [Line Items]
Revisions of previous estimates \| MBbls	7
Other [Domain] \| Proved Reserves [Domain] \| Natural Gas [Member]
Reserve Quantities [Line Items]
Revisions of previous estimates	11