XML 98 R83.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Stock-Based Compensation - Narrative (Details) |  |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Feb. 22, 2016 USD ($) shares | Feb. 19, 2016 performance_criteria | Jan. 05, 2016 USD ($) shares | Jan. 31, 2018 USD ($) | Feb. 28, 2015 | Dec. 31, 2018 USD ($) Award_Type shares | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based compensation expense |  |  |  |  |  | $ 33,100,000 | $ 34,000,000 | $ 26,000,000
Excess tax expense for stock-based compensation |  |  |  |  |  | 300,000 | 3,000,000 |
Stock-based compensation tax benefit |  |  |  |  |  |  |  | 2,100,000
Defined contribution cost recognized |  |  |  |  |  | $ 3,100,000 |  |
Deferred Compensation, Share-based Payments |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Common shares held in employee trust earned but not distributed (in shares) | shares |  |  |  |  |  | 495,774 |  |
Restricted Stock Awards |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based compensation expense |  |  |  |  |  | $ 2,800,000 | 500,000 | 400,000
Award vesting period |  |  |  |  |  | 3 years |  |
Compensation cost not yet recognized |  |  |  |  |  | $ 1,100,000 |  |
Fair value of award |  |  |  |  |  | $ 200,000 | 900,000 | 200,000
Period of recognition for unrecognized compensation costs |  |  |  |  |  | 6 months |  |
Aggregate intrinsic value |  |  |  |  |  | $ 3,400,000 |  |
Weighted-average remaining contractual term of non-vested shares |  |  |  |  |  | 5 months 1 day |  |
Restricted Stock Awards | Minimum |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Expected forfeiture rate |  |  |  |  |  | 5.00% |  |
Restricted Stock Awards | Maximum |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Expected forfeiture rate |  |  |  |  |  | 6.00% |  |
Restricted Stock Awards | Graduated or graded vesting | Minimum |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  | 3 years |  |
Restricted Stock Awards | Graduated or graded vesting | Maximum |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  | 4 years |  |
Restricted Stock Units |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based compensation expense |  |  |  |  |  | $ 0 | 1,400,000 | 1,400,000
Aggregate intrinsic value |  |  |  |  |  | $ 11,000,000 |  |
Stock Appreciation Rights |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Term of award |  |  |  |  |  | 7 years |  |
Stock Appreciation Rights | Graduated or graded vesting |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  | 3 years |  |
Performance Shares |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based compensation expense |  |  |  |  |  | $ 30,600,000 | 29,100,000 | 21,300,000
Award vesting period |  |  |  |  |  | 3 years |  |
Compensation cost not yet recognized |  |  |  |  |  | $ 24,700,000 |  |
Number of performance award types | Award_Type |  |  |  |  |  | 3 |  |
Period of recognition for unrecognized compensation costs |  |  |  |  |  | 11 months 4 days |  |
Aggregate intrinsic value |  |  |  |  |  | $ 72,500,000 |  |
Weighted-average remaining contractual term of non-vested shares |  |  |  |  |  | 1 year 1 month 25 days |  |
Number of performance awards where the performance period has ended | Award_Type |  |  |  |  |  | 2 |  |
Performance Shares | Minimum |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Expected forfeiture rate |  |  |  |  |  | 0.00% |  |
Performance Shares | Maximum |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Expected forfeiture rate |  |  |  |  |  | 6.00% |  |
Internal Metrics Performance Share Awards |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Number of performance award types | Award_Type |  |  |  |  |  | 2 |  |
Rights to share portion of award, maximum percent |  |  |  |  |  | 100.00% |  |
Market Based Performance Share Awards |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Number of performance award types | Award_Type |  |  |  |  |  | 1 |  |
Rights to share portion of award, maximum percent |  |  |  |  |  | 100.00% |  |
Rights to cash portion of award, maximum percent |  |  |  |  |  | 100.00% |  |
Employee Performance Share Awards |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  | 3 years | 3 years |  |
Number of performance criteria | performance_criteria |  | 3 |  |  |  |  |  |
Number of performance awards issued and certified (in shares) | shares | 389,920 |  |  |  |  |  |  |
Grant date fair value of performance shares issued and certified | $ 7,900,000 |  |  |  |  |  |  |
Hybrid Performance Shares |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Minimum operating cash flow for performance based award |  |  |  |  |  | $ 100,000,000 |  |
Hybrid Performance Shares | Graduated or graded vesting |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  | 3 years |  |
Hybrid Performance Shares | 25% vesting on first and second anniversary |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Award vesting percentage |  |  |  |  |  | 25.00% |  |
Hybrid Performance Shares | 50% vesting on third anniversary |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Award vesting percentage |  |  |  |  |  | 50.00% |  |
TSR Performance Share Awards |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Performance period of peer group |  |  |  |  |  | 3 years |  |
Cash payments for share-based compensation |  |  |  |  |  | $ 3,300,000 | 0 | $ 1,800,000
Number of performance awards issued and certified (in shares) | shares |  |  | 407,907 |  |  |  |  |
Grant date fair value of performance shares issued and certified |  |  | $ 7,600,000 |  |  |  |  |
Payments for stock-based compensation |  |  |  | $ 5,000,000 |  |  |  |
TSR Performance Share Awards | Liability |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Current portion of share-based liability |  |  |  |  |  | 5,000,000 | 3,300,000 |
Noncurrent portion of share-based liability |  |  |  |  |  | $ 7,900,000 | $ 6,600,000 |

X
- Definition Number of shares of common stock held in a trust that has been set up specifically to accumulate stock for the sole purpose of distribution to participating employees. Shares have been earned but not distributed. + References No definition available. + Details
Name: | cog_CommonStockSharesHeldInEmployeeTrustSharesEarnedButNotDistributed
Namespace Prefix: | cog_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the cash payment for deferred compensation share based arrangements. + References No definition available. + Details
Name: | cog_DeferredCompensationShareBasedArrangementsCashPayments
Namespace Prefix: | cog_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Expense, Amount + References No definition available. + Details
Name: | cog_EffectiveIncomeTaxRateReconciliationSharebasedCompensationExcessTaxExpenseAmount
Namespace Prefix: | cog_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the right of an employee to receive additional shares of common stock expressed as a percentage of award granted on satisfaction of either a service condition, market condition or a performance condition under an equity-based compensation plan. + References No definition available. + Details
Name: | cog_ShareBasedCompensationArrangementByShareBasedCompensationAwardPercentageRightToReceiveAdditionalShares
Namespace Prefix: | cog_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the right to receive shares under share-based compensation arrangement, expressed as a percentage. + References No definition available. + Details
Name: | cog_ShareBasedCompensationArrangementByShareBasedCompensationAwardPercentageRightToReceiveShares
Namespace Prefix: | cog_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The grant date fair value of the equity award other than option which was achieved based on performance and vested within the period. + References No definition available. + Details
Name: | cog_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAchievementAwardGrantDateFairValueCertified
Namespace Prefix: | cog_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The intrinsic value of vested and nonvested awards on equity-based plans excluding option plans (for example, stock appreciation rights plans) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units, as calculated by applying the disclosed pricing methodology. + References No definition available. + Details
Name: | cog_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValue
Namespace Prefix: | cog_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the minimum operating cash flow which the entity must achieve in the one-year period preceding the vesting date of share-based compensation awards with payout based on performance. + References No definition available. + Details
Name: | cog_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsMinimumOperatingCashFlowRequirement
Namespace Prefix: | cog_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The number of shares certified as payable pursuant to achievement of performance goals. + References No definition available. + Details
Name: | cog_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNumberOfSharesIssuableCertified
Namespace Prefix: | cog_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The term of share-based compensation awards other than options. + References No definition available. + Details
Name: | cog_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsTerm
Namespace Prefix: | cog_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The rate of forfeitures assumptions that is used in calculating the fair values of a share-based compensation award. + References No definition available. + Details
Name: | cog_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeitures
Namespace Prefix: | cog_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents number of types of equity-based payment instruments, excluding stock (or unit) options granted to employees under the equity-based compensation plan. + References No definition available. + Details
Name: | cog_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfTypesOfEquityInstrumentsOtherThanOptionsGranted
Namespace Prefix: | cog_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of criteria measured for determination of the performance award. + References No definition available. + Details
Name: | cog_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceCriteriaNumber
Namespace Prefix: | cog_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the performance period for awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | cog_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod
Namespace Prefix: | cog_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of performance shares awards for which performance goal period ended. + References No definition available. + Details
Name: | cog_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceShareAwardsEndOfPerformancePeriodNumber
Namespace Prefix: | cog_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase (decrease) in additional paid in capital (APIC) resulting from a tax benefit (deficiency) associated with an share-based compensation plan other than an employee stock ownership plan (ESOP). + References No definition available. + Details
Name: | us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_AllocatedShareBasedCompensationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements payable within one year (or the operating cycle, if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DeferredCompensationShareBasedArrangementsLiabilityCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements payable after one year (or the operating cycle, if longer). + References No definition available. + Details
Name: | us-gaap_DeferredCompensationSharebasedArrangementsLiabilityClassifiedNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of cost for defined contribution plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
Name: | us-gaap_ShareBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of vesting of share-based compensation awards. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis=us-gaap_DeferredCompensationShareBasedPaymentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VestingAxis=us-gaap_ShareBasedCompensationAwardTrancheOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_StockAppreciationRightsSARSMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_PerformanceSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=cog_InternalMetricsPerformanceShareAwardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=cog_MarketBasedPerformanceShareAwardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=cog_EmployeePerformanceSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=cog_HybridPerformanceSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VestingAxis=us-gaap_ShareBasedCompensationAwardTrancheTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VestingAxis=us-gaap_ShareBasedCompensationAwardTrancheThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=cog_TSRPerformanceSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_LiabilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |