$KOS
Kosmos Energy Ltd. Stock $kos

$kos Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-Q Financial Statement

#000150999120000095 Filed on November 09, 2020

Income Statement

Concept	2020 Q4	2020 Q3	2019 Q3
Revenue	$274.2M	$224.8M	$357.0M
YoY Change	-39.03%	-37.04%	47.03%
Cost Of Revenue	$103.9M	$84.30M	$95.50M
YoY Change	-23.77%	-11.73%	73.32%
Gross Profit	$170.3M	$140.5M	$261.5M
YoY Change	-45.66%	-46.27%	39.24%
Gross Profit Margin	62.11%	62.5%	73.24%
Selling, General & Admin	$14.80M	$18.30M	$24.70M
YoY Change	-30.52%	-25.91%	-5.0%
% of Gross Profit	8.69%	13.02%	9.45%
Research & Development	$10.30M	$14.00M	$22.80M
YoY Change	-89.48%	-38.6%	-84.62%
% of Gross Profit	6.05%	9.96%	8.72%
Depreciation & Amortization	$162.1M	$113.5M	$149.0M
YoY Change	8.14%	-23.83%	80.83%
% of Gross Profit	95.18%	80.78%	56.98%
Operating Expenses	$188.6M	$148.3M	$218.5M
YoY Change	-27.74%	-32.13%	-13.81%
Operating Profit	-$18.30M	-$7.800M	$43.00M
YoY Change	-134.92%	-118.14%	-165.45%
Interest Expense	-$78.20M	-$27.00M	-$3.400M
YoY Change	19.94%	694.12%	-93.93%
% of Operating Profit			-7.91%
Other Income/Expense, Net	$0.00	-$2.805M	-$11.47M
YoY Change		-75.55%	-189.58%
Pretax Income	-$16.30M	-$36.49M	$39.54M
YoY Change	608.7%	-192.3%	-134.47%
Income Tax	-$24.20M	$892.0K	$23.47M
% Of Pretax Income			59.37%
Net Earnings	$7.956M	-$37.38M	$16.07M
YoY Change	-122.24%	-332.7%	-112.74%
Net Earnings / Revenue	2.9%	-16.63%	4.5%
Basic Earnings Per Share	$0.02	-$0.09	$0.04
Diluted Earnings Per Share	$0.02	-$0.09	$0.04
COMMON SHARES
Basic Shares Outstanding	405.5M shares	405.4M shares	401.5M shares
Diluted Shares Outstanding		405.4M shares	411.0M shares

Balance Sheet

Concept	2020 Q4	2020 Q3	2019 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$149.0M	$300.8M	$203.6M
YoY Change	-33.63%	47.74%	5.71%
Cash & Equivalents	$149.0M	$300.8M	$203.6M
Short-Term Investments
Other Short-Term Assets	$43.50M	$64.10M	$77.10M
YoY Change	-18.54%	-16.86%	-27.06%
Inventory	$129.0M	$142.2M	$140.2M
Prepaid Expenses
Receivables	$44.49M	$29.23M	$54.61M
Other Receivables	$8.320M	$19.63M	$20.02M
Total Short-Term Assets	$400.3M	$592.5M	$550.0M
YoY Change	-29.35%	7.72%	-14.16%
LONG-TERM ASSETS
Property, Plant & Equipment	$3.321B	$3.366B	$3.799B
YoY Change	-8.82%	-11.39%	8.25%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$1.000M	$7.100M	$0.00
YoY Change			-100.0%
Other Assets	$125.6M	$109.3M	$88.20M
YoY Change	46.05%	23.92%	16.05%
Total Long-Term Assets	$3.467B	$3.501B	$3.918B
YoY Change	-7.56%	-10.65%	6.22%
TOTAL ASSETS
Total Short-Term Assets	$400.3M	$592.5M	$550.0M
Total Long-Term Assets	$3.467B	$3.501B	$3.918B
Total Assets	$3.868B	$4.094B	$4.468B
YoY Change	-10.41%	-8.39%	3.21%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$221.4M	$184.1M	$171.5M
YoY Change	48.13%	7.34%	11.42%
Accrued Expenses	$203.3M	$186.6M	$292.4M
YoY Change	-46.61%	-36.18%	11.48%
Deferred Revenue	$15.08M	$24.44M	$33.72M
YoY Change	-53.58%	-27.54%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$7.500M	$169.9M
YoY Change
Total Short-Term Liabilities	$460.2M	$565.2M	$472.4M
YoY Change	-14.64%	19.65%	-24.83%
LONG-TERM LIABILITIES
Long-Term Debt	$2.104B	$2.191B	$2.106B
YoY Change	4.77%	4.05%	0.56%
Other Long-Term Liabilities	$37.46M	$33.29M	$32.62M
YoY Change	13.02%	2.06%	251.61%
Total Long-Term Liabilities	$2.967B	$3.103B	$3.105B
YoY Change	1.05%	-0.07%	12.25%
TOTAL LIABILITIES
Total Short-Term Liabilities	$460.2M	$565.2M	$472.4M
Total Long-Term Liabilities	$2.967B	$3.103B	$3.105B
Total Liabilities	$3.427B	$3.668B	$3.577B
YoY Change	-1.38%	2.54%	5.38%
SHAREHOLDERS EQUITY
Retained Earnings	-$1.635B	-$1.643B	-$1.187B
YoY Change	33.65%	38.35%	-12.24%
Common Stock	$2.312B	$2.305B	$2.315B
YoY Change	0.44%	-0.44%	-0.91%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$237.0M	$237.0M	$237.0M
YoY Change	0.0%	0.0%	386.6%
Treasury Stock Shares	44.26M shares	44.26M shares	44.26M shares
Shareholders Equity	$440.2M	$425.6M	$891.0M
YoY Change
Total Liabilities & Shareholders Equity	$3.868B	$4.094B	$4.468B
YoY Change	-10.41%	-8.39%	3.21%

Cashflow Statement

Concept	2020 Q4	2020 Q3	2019 Q3
OPERATING ACTIVITIES
Net Income	$7.956M	-$37.38M	$16.07M
YoY Change	-122.24%	-332.7%	-112.74%
Depreciation, Depletion And Amortization	$162.1M	$113.5M	$149.0M
YoY Change	8.14%	-23.83%	80.83%
Cash From Operating Activities	$175.4M	$83.50M	$177.9M
YoY Change	-23.04%	-53.06%	98.11%
INVESTING ACTIVITIES
Capital Expenditures	-$162.3M	-$80.50M	-$90.40M
YoY Change	57.42%	-10.95%	-91.13%
Acquisitions
YoY Change
Other Investing Activities	$85.90M	-$11.30M	-$13.60M
YoY Change	1015.58%	-16.91%	-117.82%
Cash From Investing Activities	-$76.50M	-$91.70M	-$104.0M
YoY Change	-19.81%	-11.83%	-88.97%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-251.4M	145.6M	-43.60M
YoY Change	112.69%	-433.94%	-104.77%
NET CHANGE
Cash From Operating Activities	175.4M	83.50M	177.9M
Cash From Investing Activities	-76.50M	-91.70M	-104.0M
Cash From Financing Activities	-251.4M	145.6M	-43.60M
Net Change In Cash	-152.5M	137.4M	30.30M
YoY Change	-1166.43%	353.47%	-50.33%
FREE CASH FLOW
Cash From Operating Activities	$175.4M	$83.50M	$177.9M
Capital Expenditures	-$162.3M	-$80.50M	-$90.40M
Free Cash Flow	$337.7M	$164.0M	$268.3M
YoY Change	2.02%	-38.87%	-75.8%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Entity Central Index Key EntityCentralIndexKey	0001509991
	dei	Amendment Flag AmendmentFlag	false
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
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CY2019Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	us-gaap:OtherAssets
	dei	Entity File Number EntityFileNumber	001-35167
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	us-gaap:OtherLiabilitiesNoncurrent
CY2020Q3	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	us-gaap:OtherLiabilitiesNoncurrent
CY2020Q3	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	us-gaap:AccruedLiabilitiesCurrent
CY2019Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	us-gaap:AccruedLiabilitiesCurrent
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2020-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity Registrant Name EntityRegistrantName	Kosmos Energy Ltd.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	98-0686001
	dei	Entity Address Address Line1 EntityAddressAddressLine1	8176 Park Lane
	dei	Entity Address City Or Town EntityAddressCityOrTown	Dallas,
	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	75231
	dei	Security12b Title Security12bTitle	Common Stock $0.01 par value
	dei	Trading Symbol TradingSymbol	KOS
	dei	Security Exchange Name SecurityExchangeName	NYSE
	dei	City Area Code CityAreaCode	214
	dei	Local Phone Number LocalPhoneNumber	445 9600
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
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	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-11798000	USD
CY2020Q3	us-gaap	Costs And Expenses CostsAndExpenses	261279000	USD
CY2019Q3	us-gaap	Costs And Expenses CostsAndExpenses	317435000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	930414000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	1022300000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-36492000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	39535000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-400532000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	27394000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	892000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23470000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19010000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	47398000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-37384000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	16065000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-419542000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-20004000	USD
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.09
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.04
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.04
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.05
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.09
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.04
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.04
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.05
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	405409000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	401466000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	405131000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	401319000	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	405409000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	410992000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	405131000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	401319000	shares
CY2020Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.0452
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.0452
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.1356
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	841702000	USD
CY2020Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.0452
CY2020Q1	us-gaap	Dividends Dividends	18918000	USD
CY2020Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	10078000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
CY2020Q1	kos	Repurchase Of Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Used To Cover Employee Taxes And Treasury Stock Value Acquired RepurchaseOfShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsUsedToCoverEmployeeTaxesAndTreasuryStockValueAcquired	4947000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-182767000	USD
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	645148000	USD
CY2020Q2	us-gaap	Dividends Dividends	-24000	USD
CY2020Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8406000	USD
CY2020Q2	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-199391000	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	454187000	USD
CY2020Q3	us-gaap	Dividends Dividends	-27000	USD
CY2020Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8734000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-37384000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	425564000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	941478000	USD
CY2019Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.0452
CY2019Q1	us-gaap	Dividends Dividends	18744000	USD
CY2019Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8744000	USD
CY2019Q1	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
CY2019Q1	kos	Repurchase Of Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Used To Cover Employee Taxes And Treasury Stock Value Acquired RepurchaseOfShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsUsedToCoverEmployeeTaxesAndTreasuryStockValueAcquired	1979000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	-52906000	USD
CY2019Q1	us-gaap	Stockholders Equity StockholdersEquity	876593000	USD
CY2019Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.0452
CY2019Q2	us-gaap	Dividends Dividends	18740000	USD
CY2019Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9525000	USD
CY2019Q2	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
CY2019Q2	kos	Repurchase Of Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Used To Cover Employee Taxes And Treasury Stock Value Acquired RepurchaseOfShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsUsedToCoverEmployeeTaxesAndTreasuryStockValueAcquired	4000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	16837000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	884211000	USD
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.0452
CY2019Q3	us-gaap	Dividends Dividends	18753000	USD
CY2019Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9507000	USD
CY2019Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	16065000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	891030000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-419542000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-20004000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	333120000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	423160000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	3715000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-69840000	USD
	us-gaap	Exploration Abandonment And Impairment Expense ExplorationAbandonmentAndImpairmentExpense	24338000	USD
	us-gaap	Exploration Abandonment And Impairment Expense ExplorationAbandonmentAndImpairmentExpense	7361000	USD
	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	150820000	USD
	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	32156000	USD
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-34003000	USD
	kos	Cash Settlements On Commodity Derivatives Net CashSettlementsOnCommodityDerivativesNet	22800000	USD
	kos	Cash Settlements On Commodity Derivatives Net CashSettlementsOnCommodityDerivativesNet	-27000000.0	USD
	kos	Cash Settlements On Derivatives Net CashSettlementsOnDerivativesNet	16904000	USD
	kos	Cash Settlements On Derivatives Net CashSettlementsOnDerivativesNet	-24701000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	26392000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	27382000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-2893000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-24794000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-6673000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-9600000	USD
	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-88107000	USD
	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-12886000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	30848000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	51943000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-3253000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-23512000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-2631000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-61909000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-150381000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	65975000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	20657000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	400276000	USD
	us-gaap	Payments To Acquire Oil And Gas Property And Equipment PaymentsToAcquireOilAndGasPropertyAndEquipment	215425000	USD
	us-gaap	Payments To Acquire Oil And Gas Property And Equipment PaymentsToAcquireOilAndGasPropertyAndEquipment	240642000	USD
	us-gaap	Payments To Acquire Other Property Plant And Equipment PaymentsToAcquireOtherPropertyPlantAndEquipment	1838000	USD
	us-gaap	Payments To Acquire Other Property Plant And Equipment PaymentsToAcquireOtherPropertyPlantAndEquipment	8291000	USD
	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	1713000	USD
	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	0	USD
	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	53574000	USD
	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	19565000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-269124000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-268498000	USD
	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	300000000	USD
	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	175000000	USD
	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	0	USD
	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	325000000	USD
	kos	Proceeds From Advances Under Production Prepayment Agreement ProceedsFromAdvancesUnderProductionPrepaymentAgreement	50000000	USD
	kos	Proceeds From Advances Under Production Prepayment Agreement ProceedsFromAdvancesUnderProductionPrepaymentAgreement	0	USD
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	USD
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	641875000	USD
	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	USD
	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	535338000	USD
	kos	Payments For Repurchase Of Common Stock Used To Cover Employee Taxes PaymentsForRepurchaseOfCommonStockUsedToCoverEmployeeTaxes	4947000	USD
	kos	Payments For Repurchase Of Common Stock Used To Cover Employee Taxes PaymentsForRepurchaseOfCommonStockUsedToCoverEmployeeTaxes	1983000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	19174000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	54447000	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	4570000	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	2443000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	321309000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-102336000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	72842000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	29442000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	229346000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	185616000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	302188000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	215058000	USD
	us-gaap	Interest Paid Net InterestPaidNet	101908000	USD
	us-gaap	Interest Paid Net InterestPaidNet	78691000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	68330000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	27768000	USD
	kos	Production Prepayment Agreement Exchanged For Term Loan ProductionPrepaymentAgreementExchangedForTermLoan	50000000	USD
	kos	Production Prepayment Agreement Exchanged For Term Loan ProductionPrepaymentAgreementExchangedForTermLoan	0	USD
	us-gaap	Nature Of Operations NatureOfOperations	Organization<div style="text-indent:63pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span></div><div style="text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Kosmos Energy Ltd. changed its jurisdiction of incorporation from Bermuda to the State of Delaware, in the United States of America, (the "Redomestication") in December 2018. As a holding company, Kosmos Energy Ltd.’s management operations are conducted through a wholly-owned subsidiary, Kosmos Energy, LLC. The terms “Kosmos,” the “Company,” “we,” “us,” “our,” “ours,” and similar terms refer to Kosmos Energy Ltd. and its wholly-owned subsidiaries, unless the context indicates otherwise. </span></div><div style="text-align:justify;text-indent:36pt"><span><br/></span></div><div style="text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Kosmos is a full-cycle deepwater independent oil and gas exploration and production company focused along the Atlantic Margins. Our key assets include production offshore Ghana, Equatorial Guinea and U.S. Gulf of Mexico, as well as a world-class gas development offshore Mauritania and Senegal. We also maintain a sustainable proven basin exploration program in Equatorial Guinea, Ghana and U.S. Gulf of Mexico. Kosmos is listed on the New York Stock Exchange and London Stock Exchange and is traded under the ticker symbol KOS.</span></div><div style="text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span></div><div style="text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Kosmos is engaged in a single line of business, which is the exploration, development, and production of oil and natural gas. Substantially all of our long-lived assets and all of our product sales are related to operations in four geographic areas: Ghana, Equatorial Guinea, Mauritania/Senegal and U.S. Gulf of Mexico. In addition, we have exploration activities in other countries in the Atlantic Margins.</span></div>
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4	segment
	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Reclassifications</span></div><div style="text-align:justify;text-indent:63pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span></div>Certain prior period amounts have been reclassified to conform with the current presentation. Such reclassifications had no significant impact on our reported net income (loss), current assets, total assets, current liabilities, total liabilities, stockholders’ equity or cash flows.
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	300819000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	224502000	USD
CY2020Q3	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	827000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	4302000	USD
CY2020Q3	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	542000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	542000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	302188000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	229346000	USD
CY2020Q3	us-gaap	Inventory Supplies Net Of Reserves InventorySuppliesNetOfReserves	131700000	USD
CY2019Q4	us-gaap	Inventory Supplies Net Of Reserves InventorySuppliesNetOfReserves	112300000	USD
CY2020Q3	us-gaap	Energy Related Inventory Petroleum EnergyRelatedInventoryPetroleum	10500000	USD
CY2019Q4	us-gaap	Energy Related Inventory Petroleum EnergyRelatedInventoryPetroleum	2100000	USD
CY2020Q3	us-gaap	Restructuring Charges RestructuringCharges	-100000	USD
	us-gaap	Restructuring Charges RestructuringCharges	13300000	USD
	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	Concentration of Credit RiskOur revenue can be materially affected by current economic conditions and the price of oil. However, based on the current demand for crude oil and the fact that alternative purchasers are available, we believe that the loss of our marketing agent and/or any of the purchasers identified by our marketing agent would not have a long‑term material adverse effect on our financial position or results of operations. The continued economic disruption resulting from the COVID-19 pandemic could materially impact the Company’s business in future periods. Any potential disruption will depend on the duration and intensity of these events, which are highly uncertain and cannot be predicted at this time. For our U.S. Gulf of Mexico operations, crude oil and natural gas are transported to customers using third-party pipelines.
CY2020Q3	us-gaap	Proved Oil And Gas Property Successful Effort Method ProvedOilAndGasPropertySuccessfulEffortMethod	5220739000	USD
CY2019Q4	us-gaap	Proved Oil And Gas Property Successful Effort Method ProvedOilAndGasPropertySuccessfulEffortMethod	4904648000	USD
CY2020Q3	us-gaap	Unproved Oil And Gas Property Successful Effort Method UnprovedOilAndGasPropertySuccessfulEffortMethod	535466000	USD
CY2019Q4	us-gaap	Unproved Oil And Gas Property Successful Effort Method UnprovedOilAndGasPropertySuccessfulEffortMethod	814065000	USD
CY2020Q3	us-gaap	Oil And Gas Property Successful Effort Method Gross OilAndGasPropertySuccessfulEffortMethodGross	5756205000	USD
CY2019Q4	us-gaap	Oil And Gas Property Successful Effort Method Gross OilAndGasPropertySuccessfulEffortMethodGross	5718713000	USD
CY2020Q3	us-gaap	Oil And Gas Property Successful Effort Method Accumulated Depreciation Depletion And Amortization OilAndGasPropertySuccessfulEffortMethodAccumulatedDepreciationDepletionAndAmortization	2401721000	USD
CY2019Q4	us-gaap	Oil And Gas Property Successful Effort Method Accumulated Depreciation Depletion And Amortization OilAndGasPropertySuccessfulEffortMethodAccumulatedDepreciationDepletionAndAmortization	2093962000	USD
CY2020Q3	us-gaap	Oil And Gas Property Successful Effort Method Net OilAndGasPropertySuccessfulEffortMethodNet	3354484000	USD
CY2019Q4	us-gaap	Oil And Gas Property Successful Effort Method Net OilAndGasPropertySuccessfulEffortMethodNet	3624751000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	59987000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	61598000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Other Accumulated Depreciation PropertyPlantAndEquipmentOtherAccumulatedDepreciation	48167000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Other Accumulated Depreciation PropertyPlantAndEquipmentOtherAccumulatedDepreciation	44017000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Other Net PropertyPlantAndEquipmentOtherNet	11820000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Other Net PropertyPlantAndEquipmentOtherNet	17581000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	3366304000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	3642332000	USD
CY2020Q3	us-gaap	Depletion Of Oil And Gas Properties DepletionOfOilAndGasProperties	104900000	USD
CY2019Q3	us-gaap	Depletion Of Oil And Gas Properties DepletionOfOilAndGasProperties	139100000	USD
	us-gaap	Depletion Of Oil And Gas Properties DepletionOfOilAndGasProperties	307800000	USD
	us-gaap	Depletion Of Oil And Gas Properties DepletionOfOilAndGasProperties	394100000	USD
	us-gaap	Reclassification To Well Facilities And Equipment Based On Determination Of Proved Reserves ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReserves	263849000	USD
	us-gaap	Capitalized Exploratory Well Cost Charged To Expense1 CapitalizedExploratoryWellCostChargedToExpense1	0	USD
	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	150800000	USD
	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
	kos	Capitalized Exploratory Well Cost Expensed In Same Period CapitalizedExploratoryWellCostExpensedInSamePeriod	12100000	USD
CY2019Q4	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	445790000	USD
	us-gaap	Capitalized Exploratory Well Cost Additions Pending Determination Of Proved Reserves CapitalizedExploratoryWellCostAdditionsPendingDeterminationOfProvedReserves	2098000	USD
CY2020Q3	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	184039000	USD
CY2020Q3	us-gaap	Capitalized Exploratory Well Costs That Have Been Capitalized For Period Of One Year Or Less CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodOfOneYearOrLess	28750000	USD
CY2019Q4	us-gaap	Capitalized Exploratory Well Costs That Have Been Capitalized For Period Of One Year Or Less CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodOfOneYearOrLess	29121000	USD
CY2020Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	1511000	USD
CY2019Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	1279000	USD
CY2020Q3	kos	Capitalized Exploratory Well Costs Greater Than Or Equal To One Year And Less Than Three Years CapitalizedExploratoryWellCostsGreaterThanOrEqualToOneYearAndLessThanThreeYears	0	USD
CY2019Q4	kos	Capitalized Exploratory Well Costs Greater Than Or Equal To One Year And Less Than Three Years CapitalizedExploratoryWellCostsGreaterThanOrEqualToOneYearAndLessThanThreeYears	78245000	USD
CY2020Q3	kos	Capitalizedexploratorywellcostsgreaterthanorequaltothreeyearsandlessthanfouryears Capitalizedexploratorywellcostsgreaterthanorequaltothreeyearsandlessthanfouryears	155289000	USD
CY2019Q4	kos	Capitalizedexploratorywellcostsgreaterthanorequaltothreeyearsandlessthanfouryears Capitalizedexploratorywellcostsgreaterthanorequaltothreeyearsandlessthanfouryears	338424000	USD
CY2020Q3	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	184039000	USD
CY2019Q4	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	445790000	USD
CY2020Q3	us-gaap	Projects That Have Exploratory Well Costs That Have Been Capitalized For Period Greater Than One Year ProjectsThatHaveExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear	2	project
CY2019Q4	us-gaap	Projects That Have Exploratory Well Costs That Have Been Capitalized For Period Greater Than One Year ProjectsThatHaveExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear	3	project
	us-gaap	Operating Lease Cost OperatingLeaseCost	4668000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	4288000	USD
CY2020Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	269000	USD
CY2019Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	960000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	13071000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	1547000	USD
CY2020Q3	us-gaap	Lease Cost LeaseCost	1780000	USD
CY2019Q3	us-gaap	Lease Cost LeaseCost	2239000	USD
	us-gaap	Lease Cost LeaseCost	17739000	USD
	us-gaap	Lease Cost LeaseCost	5835000	USD
CY2020Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	18288000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	20008000	USD
CY2020Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	2081000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	1139000	USD
CY2020Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	20651000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	22240000	USD
CY2020Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y2M12D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y9M18D
CY2020Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.099
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.098
	us-gaap	Operating Lease Payments OperatingLeasePayments	3816000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	3077000	USD
	us-gaap	Operating Lease Payments Use OperatingLeasePaymentsUse	12225000	USD
	us-gaap	Operating Lease Payments Use OperatingLeasePaymentsUse	0	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	1039000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	4199000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	4262000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	4326000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3489000	USD
CY2020Q3	kos	Lessee Operating Lease Liability To Be Paid After Year Four LesseeOperatingLeaseLiabilityToBePaidAfterYearFour	16106000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	33421000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	10689000	USD
CY2020Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	22732000	USD
CY2020Q3	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	2400000000	USD
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	2050000000	USD
CY2020Q3	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	38662000	USD
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	41937000	USD
CY2020Q3	us-gaap	Long Term Debt LongTermDebt	2361338000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	2008063000	USD
CY2020Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	169905000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2020Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2191433000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2008063000	USD
CY2020Q3	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	2400000000	USD
CY2020Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal Remainder Of Fiscal Year LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear	130244000	USD
CY2020Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	73333000	USD
CY2020Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	312494000	USD
CY2020Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	458571000	USD
CY2020Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	458572000	USD
CY2020Q3	kos	Long Term Debt Maturity After Year Four LongTermDebtMaturityAfterYearFour	966786000	USD
CY2020Q3	us-gaap	Interest Costs Incurred InterestCostsIncurred	29760000	USD
CY2019Q3	us-gaap	Interest Costs Incurred InterestCostsIncurred	34944000	USD
	us-gaap	Interest Costs Incurred InterestCostsIncurred	90031000	USD
	us-gaap	Interest Costs Incurred InterestCostsIncurred	111566000	USD
CY2020Q3	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2255000	USD
CY2019Q3	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2285000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	6730000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	6974000	USD
CY2020Q3	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-678000	USD
CY2019Q3	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-2893000	USD
CY2020Q3	kos	Interest Expense Income Net InterestExpenseIncomeNet	27068000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-24794000	USD
CY2020Q3	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	5806000	USD
CY2019Q3	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	7077000	USD
	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	18062000	USD
	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	21330000	USD
CY2020Q3	kos	Deferred Interest DeferredInterest	531000	USD
CY2019Q3	kos	Deferred Interest DeferredInterest	290000	USD
	kos	Deferred Interest DeferredInterest	2028000	USD
	kos	Deferred Interest DeferredInterest	1559000	USD
CY2020Q3	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	1269000	USD
CY2019Q3	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	972000	USD
	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	3371000	USD
	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	2215000	USD
CY2020Q3	kos	Interest And Other Financing Costs Other Net InterestAndOtherFinancingCostsOtherNet	919000	USD
CY2019Q3	kos	Interest And Other Financing Costs Other Net InterestAndOtherFinancingCostsOtherNet	1251000	USD
	kos	Interest And Other Financing Costs Other Net InterestAndOtherFinancingCostsOtherNet	2928000	USD
	kos	Interest And Other Financing Costs Other Net InterestAndOtherFinancingCostsOtherNet	4217000	USD
CY2019Q3	kos	Interest Expense Income Net InterestExpenseIncomeNet	30721000	USD
	kos	Interest Expense Income Net InterestExpenseIncomeNet	83177000	USD
	kos	Interest Expense Income Net InterestExpenseIncomeNet	125565000	USD
CY2020Q3	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	540000	USD
CY2019Q3	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	31683000	USD
	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	32156000	USD
	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-34003000	USD
CY2020Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.02
	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	150800000	USD
CY2020Q3	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2020Q2	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2020Q1	kos	Effective Income Tax Rate Reconciliation Coronavirus Aid Relief And Economic Security Act Amount EffectiveIncomeTaxRateReconciliationCoronavirusAidReliefAndEconomicSecurityActAmount	-4900000	USD
CY2020Q1	kos	Coronavirus Aid Relief And Economic Security Act Income Tax Refund Claim Amount CoronavirusAidReliefAndEconomicSecurityActIncomeTaxRefundClaimAmount	12200000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-36492000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	39535000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-400532000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	27394000	USD
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2019Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.59
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.05
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	1.73
CY2020Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-37384000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	16065000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-419542000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-20004000	USD
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	405409000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	401466000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	405131000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	401319000	shares
CY2020Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2019Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	9526000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	405409000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	410992000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	405131000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	401319000	shares
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.09
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.04
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.04
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.05
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.09
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.04
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.04
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.05
CY2020Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	11600000	shares
CY2019Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	700000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	11400000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	15400000	shares
CY2020Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.0452
CY2020Q3	kos	Accrued Exploration Development And Production Costs Current AccruedExplorationDevelopmentAndProductionCostsCurrent	87849000	USD
CY2019Q4	kos	Accrued Exploration Development And Production Costs Current AccruedExplorationDevelopmentAndProductionCostsCurrent	152490000	USD
CY2020Q3	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	24435000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	32482000	USD
CY2020Q3	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	2673000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	4527000	USD
CY2020Q3	kos	Accrued General And Administrative Expenses Current AccruedGeneralAndAdministrativeExpensesCurrent	4696000	USD
CY2019Q4	kos	Accrued General And Administrative Expenses Current AccruedGeneralAndAdministrativeExpensesCurrent	44575000	USD
CY2020Q3	us-gaap	Interest Payable Current InterestPayableCurrent	3361000	USD
CY2019Q4	us-gaap	Interest Payable Current InterestPayableCurrent	33584000	USD
CY2020Q3	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	51016000	USD
CY2019Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	103566000	USD
CY2020Q3	kos	Accrual For All Other Taxes Current AccrualForAllOtherTaxesCurrent	2035000	USD
	us-gaap	Restructuring Charges RestructuringCharges	0	USD
CY2019Q4	kos	Accrual For All Other Taxes Current AccrualForAllOtherTaxesCurrent	3375000	USD
CY2020Q3	kos	Derivative Liability Settled Current DerivativeLiabilitySettledCurrent	6571000	USD
CY2019Q4	kos	Derivative Liability Settled Current DerivativeLiabilitySettledCurrent	4837000	USD
CY2020Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	3994000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	1268000	USD
CY2020Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	186630000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	380704000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	235053000	USD
	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	2781000	USD
	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	4113000	USD
	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	2139000	USD
	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	14377000	USD
CY2020Q3	us-gaap	Asset Retirement Obligation AssetRetirementObligation	250237000	USD
CY2020Q3	kos	Facilities Insurance Modifications Expenditures FacilitiesInsuranceModificationsExpenditures	2500000	USD
CY2019Q3	us-gaap	Other Nonoperating Gains Losses OtherNonoperatingGainsLosses	-10986000	USD
CY2019Q3	kos	Facilities Insurance Modifications Expenditures FacilitiesInsuranceModificationsExpenditures	12600000	USD
CY2020Q3	us-gaap	Other Nonoperating Gains Losses OtherNonoperatingGainsLosses	-1847000	USD
	kos	Facilities Insurance Modifications Expenditures FacilitiesInsuranceModificationsExpenditures	10600000	USD
	kos	Facilities Insurance Modifications Expenditures FacilitiesInsuranceModificationsExpenditures	34800000	USD
	kos	Facilities Insurance Modifications Insurance Recoveries FacilitiesInsuranceModificationsInsuranceRecoveries	0	USD
	kos	Facilities Insurance Modifications Insurance Recoveries FacilitiesInsuranceModificationsInsuranceRecoveries	40000000.0	USD
CY2020Q3	us-gaap	Inventory Write Down InventoryWriteDown	1200000	USD
CY2019Q3	us-gaap	Inventory Write Down InventoryWriteDown	1232000	USD
	us-gaap	Inventory Write Down InventoryWriteDown	3028000	USD
	us-gaap	Inventory Write Down InventoryWriteDown	1419000	USD
CY2020Q3	kos	Loss On Asset Retirement Obligation Liabilities Settled Net LossOnAssetRetirementObligationLiabilitiesSettledNet	-170000	USD
CY2019Q3	kos	Loss On Asset Retirement Obligation Liabilities Settled Net LossOnAssetRetirementObligationLiabilitiesSettledNet	-746000	USD
	kos	Loss On Asset Retirement Obligation Liabilities Settled Net LossOnAssetRetirementObligationLiabilitiesSettledNet	1952000	USD
	kos	Loss On Asset Retirement Obligation Liabilities Settled Net LossOnAssetRetirementObligationLiabilitiesSettledNet	1167000	USD
CY2020Q3	us-gaap	Restructuring Charges RestructuringCharges	-72000	USD
CY2019Q3	us-gaap	Restructuring Charges RestructuringCharges	0	USD
	us-gaap	Restructuring Charges RestructuringCharges	13268000	USD
	us-gaap	Other Nonoperating Gains Losses OtherNonoperatingGainsLosses	-9714000	USD
	us-gaap	Other Nonoperating Gains Losses OtherNonoperatingGainsLosses	-9212000	USD
CY2020Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-2805000	USD
CY2019Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-11472000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-27962000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-11798000	USD
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4	segment
CY2020Q3	us-gaap	Revenues Revenues	224786000	USD
CY2020Q3	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	1000	USD
CY2020Q3	kos	Revenue And Other Income RevenueAndOtherIncome	224787000	USD
CY2020Q3	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	84277000	USD
CY2020Q3	kos	Facilities Insurance Modifications Expense Income FacilitiesInsuranceModificationsExpenseIncome	2465000	USD
CY2020Q3	us-gaap	Exploration Expense ExplorationExpense	13977000	USD
CY2020Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	18269000	USD
CY2020Q3	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	111231000	USD
CY2020Q3	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2020Q3	kos	Interest Expense Income Net InterestExpenseIncomeNet	27068000	USD
CY2020Q3	kos	Gain Loss On Commodity Derivative Instruments Net Pretax GainLossOnCommodityDerivativeInstrumentsNetPretax	-1187000	USD
CY2020Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-2805000	USD
CY2020Q3	us-gaap	Costs And Expenses CostsAndExpenses	261279000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-36492000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	892000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-37384000	USD
CY2020Q3	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties CostsIncurredAcquisitionOfOilAndGasProperties	99507000	USD
	us-gaap	Revenues Revenues	529880000	USD
	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	2000	USD
	kos	Revenue And Other Income RevenueAndOtherIncome	529882000	USD
	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	234627000	USD
	kos	Facilities Insurance Modifications Expense Income FacilitiesInsuranceModificationsExpenseIncome	10555000	USD
	us-gaap	Exploration Expense ExplorationExpense	74293000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	57366000	USD
	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	326390000	USD
	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	150820000	USD
	kos	Interest Expense Income Net InterestExpenseIncomeNet	83177000	USD
	kos	Gain Loss On Commodity Derivative Instruments Net Pretax GainLossOnCommodityDerivativeInstrumentsNetPretax	34776000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-27962000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	930414000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-400532000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19010000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-419542000	USD
	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties CostsIncurredAcquisitionOfOilAndGasProperties	250358000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	3366304000	USD
CY2020Q3	us-gaap	Assets Assets	4093501000	USD
CY2019Q3	us-gaap	Revenues Revenues	357036000	USD
CY2019Q3	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-66000	USD
CY2019Q3	kos	Revenue And Other Income RevenueAndOtherIncome	356970000	USD
CY2019Q3	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	95540000	USD
CY2019Q3	kos	Facilities Insurance Modifications Expense Income FacilitiesInsuranceModificationsExpenseIncome	12569000	USD
CY2019Q3	us-gaap	Exploration Expense ExplorationExpense	22773000	USD
CY2019Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	24723000	USD
CY2019Q3	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	146653000	USD
CY2019Q3	kos	Interest Expense Income Net InterestExpenseIncomeNet	30721000	USD
CY2019Q3	kos	Gain Loss On Commodity Derivative Instruments Net Pretax GainLossOnCommodityDerivativeInstrumentsNetPretax	27016000	USD
CY2019Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-11472000	USD
CY2019Q3	us-gaap	Costs And Expenses CostsAndExpenses	317435000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	39535000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23470000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	16065000	USD
CY2019Q3	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties CostsIncurredAcquisitionOfOilAndGasProperties	107393000	USD
	us-gaap	Revenues Revenues	1049759000	USD
	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-65000	USD
	kos	Revenue And Other Income RevenueAndOtherIncome	1049694000	USD
	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	266316000	USD
	kos	Facilities Insurance Modifications Expense Income FacilitiesInsuranceModificationsExpenseIncome	-5174000	USD
	us-gaap	Exploration Expense ExplorationExpense	83022000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	88703000	USD
	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	416186000	USD
	kos	Interest Expense Income Net InterestExpenseIncomeNet	125565000	USD
	kos	Gain Loss On Commodity Derivative Instruments Net Pretax GainLossOnCommodityDerivativeInstrumentsNetPretax	-35884000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-11798000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	1022300000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	27394000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	47398000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-20004000	USD
	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties CostsIncurredAcquisitionOfOilAndGasProperties	318306000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	3799036000	USD
CY2019Q3	us-gaap	Assets Assets	4468259000	USD
	us-gaap	Payments To Acquire Oil And Gas Property And Equipment PaymentsToAcquireOilAndGasPropertyAndEquipment	215425000	USD
	us-gaap	Payments To Acquire Oil And Gas Property And Equipment PaymentsToAcquireOilAndGasPropertyAndEquipment	240642000	USD
	us-gaap	Payments To Acquire Other Property Plant And Equipment PaymentsToAcquireOtherPropertyPlantAndEquipment	1838000	USD
	us-gaap	Payments To Acquire Other Property Plant And Equipment PaymentsToAcquireOtherPropertyPlantAndEquipment	8291000	USD
	kos	Increase Decrease In Capital Accruals IncreaseDecreaseInCapitalAccruals	-6284000	USD
	kos	Increase Decrease In Capital Accruals IncreaseDecreaseInCapitalAccruals	11083000	USD
	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	49955000	USD
	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	75661000	USD
	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	18062000	USD
	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	21330000	USD
	kos	Other Capital Expenditure Expense Net OtherCapitalExpenditureExpenseNet	7486000	USD
	kos	Other Capital Expenditure Expense Net OtherCapitalExpenditureExpenseNet	3959000	USD
	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties CostsIncurredAcquisitionOfOilAndGasProperties	250358000	USD
	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties CostsIncurredAcquisitionOfOilAndGasProperties	318306000	USD

Files In Submission

Name	View Source	Status
0001509991-20-000095-index-headers.html	Edgar Link	pending
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$KOS
Kosmos Energy Ltd. Stock $kos

2020 Q4 Form 10-Q Financial Statement

#000150999120000095 Filed on November 09, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$KOS Kosmos Energy Ltd. Stock $kos

2020 Q4 Form 10-Q Financial Statement

#000150999120000095 Filed on November 09, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$KOS
Kosmos Energy Ltd. Stock $kos