$IMO
IMPERIAL OIL LTD

2018 Q4 Form 10-K Financial Statement

#000119312519054202 Filed on February 27, 2019

View on sec.gov

Income Statement

Concept 2018 Q4 2018 2017 Q4
Revenue $7.851B $34.96B $8.048B
YoY Change -2.45% 20.05% 9.62%
Cost Of Revenue $5.689B $27.66B $6.379B
YoY Change -10.82% 16.02% 13.55%
Gross Profit $2.162B $7.302B $1.669B
YoY Change 29.54% 38.24% -3.19%
Gross Profit Margin 27.54% 20.88% 20.74%
Selling, General & Admin $643.0M $2.575B $687.0M
YoY Change -6.4% 0.35% -5.89%
% of Gross Profit 29.74% 35.26% 41.16%
Research & Development $6.000M $110.0M $154.0M
YoY Change -96.1% -0.9% 710.53%
% of Gross Profit 0.28% 1.51% 9.23%
Depreciation & Amortization $410.0M $1.555B $1.037B
YoY Change -60.46% -28.41% 159.9%
% of Gross Profit 18.96% 21.3% 62.13%
Operating Expenses $1.086B $110.0M $1.878B
YoY Change -42.17% -0.9% 63.59%
Operating Profit $1.076B $7.192B -$209.0M
YoY Change -614.83% 39.08% -136.28%
Interest Expense $4.000M $108.0M $7.000M
YoY Change -42.86% 38.46% -150.0%
% of Operating Profit 0.37% 1.5%
Other Income/Expense, Net -$3.000M -$3.000M -$8.000M
YoY Change -62.5% -76.92% -900.0%
Pretax Income $1.086B $3.073B -$209.0M
YoY Change -619.62% 428.01% -112.57%
Income Tax $233.0M $759.0M -$72.00M
% Of Pretax Income 21.45% 24.7%
Net Earnings $853.0M $2.314B -$137.0M
YoY Change -722.63% 372.24% -109.49%
Net Earnings / Revenue 10.86% 6.62% -1.7%
Basic Earnings Per Share $2.87
Diluted Earnings Per Share $1.080M $2.86 -$164.1K
COMMON SHARES
Basic Shares Outstanding 807.5M
Diluted Shares Outstanding 810.1M

Balance Sheet

Concept 2018 Q4 2018 2017 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments $988.0M $988.0M $1.195B
YoY Change -17.32% -17.32% 205.63%
Cash & Equivalents $988.0M $1.195B
Short-Term Investments
Other Short-Term Assets $541.0M $541.0M $425.0M
YoY Change 27.29% 27.29% -9.19%
Inventory $1.297B $1.297B $1.075B
Prepaid Expenses
Receivables $2.529B $2.529B $2.712B
Other Receivables $0.00 $0.00 $0.00
Total Short-Term Assets $5.355B $5.355B $5.407B
YoY Change -0.96% -0.96% 41.14%
LONG-TERM ASSETS
Property, Plant & Equipment $34.23B $34.23B $34.47B
YoY Change -0.72% -0.72% -5.12%
Goodwill $186.0M $186.0M
YoY Change 0.0% 0.0%
Intangibles
YoY Change
Long-Term Investments $857.0M $857.0M $865.0M
YoY Change -0.92% -0.92% -16.02%
Other Assets $833.0M $833.0M $670.0M
YoY Change 24.33% 24.33% 144.53%
Total Long-Term Assets $36.10B $36.10B $36.19B
YoY Change -0.26% -0.26% -4.31%
TOTAL ASSETS
Total Short-Term Assets $5.355B $5.355B $5.407B
Total Long-Term Assets $36.10B $36.10B $36.19B
Total Assets $41.46B $41.46B $41.60B
YoY Change -0.35% -0.35% -0.13%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable $3.688B $3.275B $3.440B
YoY Change 7.21% -4.8% 22.99%
Accrued Expenses $413.0M $437.0M
YoY Change -5.49% 10.35%
Deferred Revenue
YoY Change
Short-Term Debt $0.00 $0.00 $0.00
YoY Change
Long-Term Debt Due $202.0M $202.0M $202.0M
YoY Change 0.0% 0.0% 0.0%
Total Short-Term Liabilities $3.955B $3.955B $4.136B
YoY Change -4.38% -4.38% 6.52%
LONG-TERM LIABILITIES
Long-Term Debt $4.447B $4.978B $4.447B
YoY Change 0.0% -0.54% 0.0%
Other Long-Term Liabilities $2.943B $2.943B $3.780B
YoY Change -22.14% -22.14% 3.39%
Total Long-Term Liabilities $7.390B $7.921B $8.227B
YoY Change -10.17% -9.83% 1.53%
TOTAL LIABILITIES
Total Short-Term Liabilities $3.955B $3.955B $4.136B
Total Long-Term Liabilities $7.390B $7.921B $8.227B
Total Liabilities $16.97B $16.97B $17.17B
YoY Change -1.16% -1.16% 3.2%
SHAREHOLDERS EQUITY
Retained Earnings $24.56B $24.71B
YoY Change -0.62% -2.52%
Common Stock $1.446B $1.536B
YoY Change -5.86% -1.92%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity $24.49B $24.49B $24.44B
YoY Change
Total Liabilities & Shareholders Equity $41.46B $41.46B $41.60B
YoY Change -0.35% -0.35% -0.13%

Cashflow Statement

Concept 2018 Q4 2018 2017 Q4
OPERATING ACTIVITIES
Net Income $853.0M $2.314B -$137.0M
YoY Change -722.63% 372.24% -109.49%
Depreciation, Depletion And Amortization $410.0M $1.555B $1.037B
YoY Change -60.46% -28.41% 159.9%
Cash From Operating Activities $871.0M $3.922B $1.080B
YoY Change -19.35% 41.95% 43.81%
INVESTING ACTIVITIES
Capital Expenditures -$436.0M -$1.491B -$310.0M
YoY Change 40.65% 50.15% 72.22%
Acquisitions
YoY Change
Other Investing Activities -$27.00M -$68.00M -$17.00M
YoY Change 58.82% -132.08% -100.96%
Cash From Investing Activities -$463.0M -$1.559B -$327.0M
YoY Change 41.59% 99.62% -120.48%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net $1.971B
YoY Change 214.35%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities -568.0M -2.570B -391.0M
YoY Change 45.27% 118.17% -82.27%
NET CHANGE
Cash From Operating Activities 871.0M 3.922B 1.080B
Cash From Investing Activities -463.0M -1.559B -327.0M
Cash From Financing Activities -568.0M -2.570B -391.0M
Net Change In Cash -160.0M -207.0M 362.0M
YoY Change -144.2% -125.75% 153.15%
FREE CASH FLOW
Cash From Operating Activities $871.0M $3.922B $1.080B
Capital Expenditures -$436.0M -$1.491B -$310.0M
Free Cash Flow $1.307B $5.413B $1.390B
YoY Change -5.97% 44.12% 49.3%

Facts In Submission

Frame Concept Type Concept / XBRL Key Value Unit
CY2018 dei Document Type
DocumentType
10-K
CY2018 dei Amendment Flag
AmendmentFlag
false
CY2018 dei Document Period End Date
DocumentPeriodEndDate
2018-12-31
CY2018 dei Document Fiscal Year Focus
DocumentFiscalYearFocus
2018
CY2018 dei Document Fiscal Period Focus
DocumentFiscalPeriodFocus
FY
CY2018 dei Entity Registrant Name
EntityRegistrantName
IMPERIAL OIL LTD
CY2018 dei Entity Central Index Key
EntityCentralIndexKey
0000049938
CY2018 dei Current Fiscal Year End Date
CurrentFiscalYearEndDate
--12-31
CY2018 dei Entity Well Known Seasoned Issuer
EntityWellKnownSeasonedIssuer
Yes
CY2018 dei Entity Voluntary Filers
EntityVoluntaryFilers
No
CY2018 dei Entity Current Reporting Status
EntityCurrentReportingStatus
Yes
CY2018 dei Entity Filer Category
EntityFilerCategory
Large Accelerated Filer
CY2018 dei Trading Symbol
TradingSymbol
IMO
CY2018 dei Entity Shell Company
EntityShellCompany
false
CY2018 dei Entity Emerging Growth Company
EntityEmergingGrowthCompany
false
CY2018 dei Entity Small Business
EntitySmallBusiness
false
CY2018 imo Total Revenues And Other Income
TotalRevenuesAndOtherIncome
35099000000
CY2016 imo Crude Oil And Product Purchases Related Parties
CrudeOilAndProductPurchasesRelatedParties
2224000000
CY2017 imo Total Revenues And Other Income
TotalRevenuesAndOtherIncome
29424000000
CY2016 imo Total Revenues And Other Income
TotalRevenuesAndOtherIncome
27354000000
CY2018 imo Production And Manufacturing Expenses
ProductionAndManufacturingExpenses
6121000000
CY2018 imo Selling And General
SellingAndGeneral
908000000
CY2018 imo Pension And Post Retirement Benefit Costs Non Service Components
PensionAndPostRetirementBenefitCostsNonServiceComponents
107000000
CY2018 us-gaap Costs And Expenses
CostsAndExpenses
32026000000
CY2017 us-gaap Costs And Expenses
CostsAndExpenses
28842000000
CY2016 us-gaap Costs And Expenses
CostsAndExpenses
24910000000
CY2018 us-gaap Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
3073000000
CY2017 us-gaap Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
582000000
CY2016 us-gaap Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
2444000000
CY2018 us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
759000000
CY2017 us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
92000000
CY2016 us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
279000000
CY2018 us-gaap Profit Loss
ProfitLoss
2314000000
CY2017 us-gaap Profit Loss
ProfitLoss
490000000
CY2016 us-gaap Profit Loss
ProfitLoss
2165000000
CY2018 us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
2.86
CY2017 us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
0.58
CY2016 us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
2.55
CY2018 us-gaap Revenue From Related Parties
RevenueFromRelatedParties
6383000000
CY2017 us-gaap Revenue From Related Parties
RevenueFromRelatedParties
4110000000
CY2016 us-gaap Revenue From Related Parties
RevenueFromRelatedParties
2342000000
CY2018 imo Crude Oil And Product Purchases Related Parties
CrudeOilAndProductPurchasesRelatedParties
4092000000
CY2017 imo Crude Oil And Product Purchases Related Parties
CrudeOilAndProductPurchasesRelatedParties
2687000000
CY2018 imo Production And Manufacturing Expenses Related Parties
ProductionAndManufacturingExpensesRelatedParties
566000000
CY2017 imo Production And Manufacturing Expenses Related Parties
ProductionAndManufacturingExpensesRelatedParties
544000000
CY2016 imo Production And Manufacturing Expenses Related Parties
ProductionAndManufacturingExpensesRelatedParties
533000000
CY2018 imo Financing Related Parties
FinancingRelatedParties
89000000
CY2017 imo Financing Related Parties
FinancingRelatedParties
60000000
CY2016 imo Financing Related Parties
FinancingRelatedParties
89000000
CY2018 us-gaap Net Income Loss
NetIncomeLoss
2314000000
CY2017 us-gaap Net Income Loss
NetIncomeLoss
490000000
CY2016 us-gaap Net Income Loss
NetIncomeLoss
2165000000
CY2018 us-gaap Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
298000000
CY2017 us-gaap Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
82000000
CY2016 us-gaap Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
-69000000
CY2018 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
2612000000
CY2017 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
572000000
CY2016 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
2096000000
CY2018Q4 us-gaap Receivables Net Current
ReceivablesNetCurrent
2529000000
CY2017Q4 us-gaap Receivables Net Current
ReceivablesNetCurrent
2712000000
CY2018Q4 imo Materials Supplies And Prepaid Expenses
MaterialsSuppliesAndPrepaidExpenses
541000000
CY2017Q4 imo Materials Supplies And Prepaid Expenses
MaterialsSuppliesAndPrepaidExpenses
425000000
CY2018Q4 us-gaap Assets Current
AssetsCurrent
5355000000
CY2017Q4 us-gaap Assets Current
AssetsCurrent
5407000000
CY2018Q4 us-gaap Long Term Investments And Receivables Net
LongTermInvestmentsAndReceivablesNet
857000000
CY2017Q4 us-gaap Long Term Investments And Receivables Net
LongTermInvestmentsAndReceivablesNet
865000000
CY2018Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
34225000000
CY2017Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
34473000000
CY2018Q4 us-gaap Goodwill
Goodwill
186000000
CY2016 imo Deferred Income Taxes And Other
DeferredIncomeTaxesAndOther
114000000
CY2017Q4 us-gaap Goodwill
Goodwill
186000000
CY2018Q4 us-gaap Other Assets Noncurrent
OtherAssetsNoncurrent
833000000
CY2018Q4 us-gaap Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
41456000000
CY2017Q4 us-gaap Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
41601000000
CY2018Q4 us-gaap Related Party Transaction Due From To Related Party Current
RelatedPartyTransactionDueFromToRelatedPartyCurrent
666000000
CY2018 us-gaap Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
-224000000
CY2017Q4 us-gaap Other Assets Noncurrent
OtherAssetsNoncurrent
670000000
CY2018Q4 us-gaap Assets
Assets
41456000000
CY2017Q4 us-gaap Assets
Assets
41601000000
CY2018Q4 us-gaap Debt Current
DebtCurrent
202000000
CY2017Q4 us-gaap Debt Current
DebtCurrent
202000000
CY2018Q4 us-gaap Accounts Payable And Accrued Liabilities Current
AccountsPayableAndAccruedLiabilitiesCurrent
3688000000
CY2017Q4 us-gaap Accounts Payable And Accrued Liabilities Current
AccountsPayableAndAccruedLiabilitiesCurrent
3877000000
CY2018Q4 us-gaap Accrued Income Taxes Current
AccruedIncomeTaxesCurrent
65000000
CY2017Q4 us-gaap Accrued Income Taxes Current
AccruedIncomeTaxesCurrent
57000000
CY2018Q4 us-gaap Liabilities Current
LiabilitiesCurrent
3955000000
CY2017Q4 us-gaap Liabilities Current
LiabilitiesCurrent
4136000000
CY2018Q4 us-gaap Deferred Tax Liabilities Noncurrent
DeferredTaxLiabilitiesNoncurrent
5091000000
CY2017Q4 us-gaap Deferred Tax Liabilities Noncurrent
DeferredTaxLiabilitiesNoncurrent
4245000000
CY2018Q4 us-gaap Liabilities
Liabilities
16967000000
CY2017Q4 us-gaap Liabilities
Liabilities
17166000000
CY2018Q4 us-gaap Commitments And Contingencies
CommitmentsAndContingencies
CY2017Q4 us-gaap Commitments And Contingencies
CommitmentsAndContingencies
CY2018Q4 us-gaap Common Stock Value
CommonStockValue
1446000000
CY2017Q4 us-gaap Common Stock Value
CommonStockValue
1536000000
CY2018Q4 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
24560000000
CY2017Q4 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
24714000000
CY2018Q4 us-gaap Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
24489000000
CY2017Q4 us-gaap Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
24435000000
CY2017Q4 us-gaap Related Party Transaction Due From To Related Party Current
RelatedPartyTransactionDueFromToRelatedPartyCurrent
509000000
CY2018Q4 us-gaap Due To Related Parties Current
DueToRelatedPartiesCurrent
75000000
CY2017Q4 us-gaap Due To Related Parties Current
DueToRelatedPartiesCurrent
75000000
CY2018Q4 us-gaap Common Stock Shares Outstanding
CommonStockSharesOutstanding
783000000
CY2017Q4 us-gaap Common Stock Shares Outstanding
CommonStockSharesOutstanding
831000000
CY2016Q4 us-gaap Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
25021000000
CY2018 imo Depreciation Depletion And Amortization Excluding Intangible Asset Impairment Charges
DepreciationDepletionAndAmortizationExcludingIntangibleAssetImpairmentCharges
1509000000
CY2017 imo Depreciation Depletion And Amortization Excluding Intangible Asset Impairment Charges
DepreciationDepletionAndAmortizationExcludingIntangibleAssetImpairmentCharges
2172000000
CY2016 imo Depreciation Depletion And Amortization Excluding Intangible Asset Impairment Charges
DepreciationDepletionAndAmortizationExcludingIntangibleAssetImpairmentCharges
1628000000
CY2018 imo Intangible Asset Impairment Charges
IntangibleAssetImpairmentCharges
46000000
CY2018 us-gaap Gain Loss On Disposition Of Assets1
GainLossOnDispositionOfAssets1
54000000
CY2017 us-gaap Gain Loss On Disposition Of Assets1
GainLossOnDispositionOfAssets1
220000000
CY2016 us-gaap Gain Loss On Disposition Of Assets1
GainLossOnDispositionOfAssets1
2244000000
CY2018 imo Deferred Income Taxes And Other
DeferredIncomeTaxesAndOther
806000000
CY2017 imo Deferred Income Taxes And Other
DeferredIncomeTaxesAndOther
321000000
CY2017 us-gaap Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
689000000
CY2016 us-gaap Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
442000000
CY2018 imo Increase Decrease In Inventories Materials And Supplies And Prepaid Expenses
IncreaseDecreaseInInventoriesMaterialsAndSuppliesAndPrepaidExpenses
338000000
CY2017 imo Increase Decrease In Inventories Materials And Supplies And Prepaid Expenses
IncreaseDecreaseInInventoriesMaterialsAndSuppliesAndPrepaidExpenses
83000000
CY2016 imo Increase Decrease In Inventories Materials And Supplies And Prepaid Expenses
IncreaseDecreaseInInventoriesMaterialsAndSuppliesAndPrepaidExpenses
-197000000
CY2018 us-gaap Increase Decrease In Accrued Income Taxes Payable
IncreaseDecreaseInAccruedIncomeTaxesPayable
8000000
CY2017 us-gaap Increase Decrease In Accrued Income Taxes Payable
IncreaseDecreaseInAccruedIncomeTaxesPayable
-431000000
CY2016 us-gaap Increase Decrease In Accrued Income Taxes Payable
IncreaseDecreaseInAccruedIncomeTaxesPayable
36000000
CY2018 us-gaap Increase Decrease In Accounts Payable And Accrued Liabilities
IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
-764000000
CY2018 imo Contribution To Registered Pension Plan Assets
ContributionToRegisteredPensionPlanAssets
203000000
CY2015Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
203000000
CY2018Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
988000000
CY2017 imo Pension And Post Retirement Benefit Costs Non Service Components
PensionAndPostRetirementBenefitCostsNonServiceComponents
122000000
CY2016 imo Pension And Post Retirement Benefit Costs Non Service Components
PensionAndPostRetirementBenefitCostsNonServiceComponents
130000000
CY2018 imo Revenues Including Federal Excise Tax
RevenuesIncludingFederalExciseTax
34964000000
CY2017 imo Revenues Including Federal Excise Tax
RevenuesIncludingFederalExciseTax
29125000000
CY2016 imo Revenues Including Federal Excise Tax
RevenuesIncludingFederalExciseTax
25049000000
CY2018 imo Investment And Other Income Net
InvestmentAndOtherIncomeNet
135000000
CY2017 us-gaap Increase Decrease In Accounts Payable And Accrued Liabilities
IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
678000000
CY2016 us-gaap Increase Decrease In Accounts Payable And Accrued Liabilities
IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
237000000
CY2018 us-gaap Increase Decrease In Other Operating Capital Net
IncreaseDecreaseInOtherOperatingCapitalNet
-171000000
CY2017 us-gaap Increase Decrease In Other Operating Capital Net
IncreaseDecreaseInOtherOperatingCapitalNet
-525000000
CY2016 us-gaap Increase Decrease In Other Operating Capital Net
IncreaseDecreaseInOtherOperatingCapitalNet
-324000000
CY2018 us-gaap Payments To Acquire Productive Assets
PaymentsToAcquireProductiveAssets
1491000000
CY2017 us-gaap Payments To Acquire Productive Assets
PaymentsToAcquireProductiveAssets
993000000
CY2016 us-gaap Payments To Acquire Productive Assets
PaymentsToAcquireProductiveAssets
1073000000
CY2018 us-gaap Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
59000000
CY2017 us-gaap Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
232000000
CY2017 us-gaap Payments To Acquire Investments
PaymentsToAcquireInvestments
1000000
CY2016 us-gaap Payments To Acquire Investments
PaymentsToAcquireInvestments
1000000
CY2018 us-gaap Payments To Acquire Loans Receivable
PaymentsToAcquireLoansReceivable
127000000
CY2017 us-gaap Payments To Acquire Loans Receivable
PaymentsToAcquireLoansReceivable
19000000
CY2016 us-gaap Proceeds From Repayments Of Short Term Debt
ProceedsFromRepaymentsOfShortTermDebt
-1749000000
CY2016 us-gaap Proceeds From Issuance Of Long Term Debt
ProceedsFromIssuanceOfLongTermDebt
495000000
CY2016 us-gaap Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
2000000000
CY2018 us-gaap Repayments Of Long Term Capital Lease Obligations
RepaymentsOfLongTermCapitalLeaseObligations
27000000
CY2017 us-gaap Repayments Of Long Term Capital Lease Obligations
RepaymentsOfLongTermCapitalLeaseObligations
27000000
CY2016 us-gaap Repayments Of Long Term Capital Lease Obligations
RepaymentsOfLongTermCapitalLeaseObligations
28000000
CY2018 us-gaap Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
572000000
CY2017 us-gaap Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
524000000
CY2016 us-gaap Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
492000000
CY2018 us-gaap Payments For Repurchase Of Common Stock
PaymentsForRepurchaseOfCommonStock
1971000000
CY2017 us-gaap Payments For Repurchase Of Common Stock
PaymentsForRepurchaseOfCommonStock
627000000
CY2017Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
1195000000
CY2016Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
391000000
CY2017 imo Contribution To Registered Pension Plan Assets
ContributionToRegisteredPensionPlanAssets
212000000
CY2016 imo Contribution To Registered Pension Plan Assets
ContributionToRegisteredPensionPlanAssets
163000000
CY2018 imo Amortization Of Computer Software Development Costs
AmortizationOfComputerSoftwareDevelopmentCosts
P15Y
CY2018 us-gaap Finite Lived Intangible Asset Useful Life
FiniteLivedIntangibleAssetUsefulLife
P10Y
CY2017 imo Production And Manufacturing Expenses
ProductionAndManufacturingExpenses
5586000000
CY2016 imo Production And Manufacturing Expenses
ProductionAndManufacturingExpenses
5105000000
CY2017 imo Selling And General
SellingAndGeneral
883000000
CY2016 imo Selling And General
SellingAndGeneral
1118000000
CY2017 imo Investment And Other Income Net
InvestmentAndOtherIncomeNet
299000000
CY2016 imo Investment And Other Income Net
InvestmentAndOtherIncomeNet
2305000000
CY2018 us-gaap Exploration Expense
ExplorationExpense
19000000
CY2017 us-gaap Exploration Expense
ExplorationExpense
183000000
CY2016 us-gaap Exploration Expense
ExplorationExpense
94000000
CY2018 imo Crude Oil And Product Purchases
CrudeOilAndProductPurchases
21541000000
CY2017 imo Crude Oil And Product Purchases
CrudeOilAndProductPurchases
18145000000
CY2016 imo Crude Oil And Product Purchases
CrudeOilAndProductPurchases
15120000000
CY2016Q4 imo Deferred Tax Assets Inventory Noncurrent
DeferredTaxAssetsInventoryNoncurrent
240000000
CY2018Q4 us-gaap Deferred Tax Assets Capital Loss Carryforwards
DeferredTaxAssetsCapitalLossCarryforwards
658000000
CY2018 imo Production And Manufacturing Expenses As Reported
ProductionAndManufacturingExpensesAsReported
6121000000
CY2017 imo Production And Manufacturing Expenses As Reported
ProductionAndManufacturingExpensesAsReported
5698000000
CY2016 imo Production And Manufacturing Expenses As Reported
ProductionAndManufacturingExpensesAsReported
5224000000
CY2017Q4 us-gaap Deferred Tax Assets Capital Loss Carryforwards
DeferredTaxAssetsCapitalLossCarryforwards
936000000
CY2018Q4 us-gaap Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
5726000000
CY2018 imo Selling And General As Reported
SellingAndGeneralAsReported
908000000
CY2017 imo Selling And General As Reported
SellingAndGeneralAsReported
893000000
CY2016 imo Selling And General As Reported
SellingAndGeneralAsReported
1129000000
CY2018 imo Federal Excise Tax
FederalExciseTax
1667000000
CY2017 imo Federal Excise Tax
FederalExciseTax
1673000000
CY2016 imo Federal Excise Tax
FederalExciseTax
1650000000
CY2018 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
1555000000
CY2017 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
2172000000
CY2016 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
1628000000
CY2018 imo Pension And Post Retirement Benefit Costs Non Service Components As Reported
PensionAndPostRetirementBenefitCostsNonServiceComponentsAsReported
107000000
CY2018 imo Capital And Exploration Expenditures
CapitalAndExplorationExpenditures
1427000000
CY2017 imo Capital And Exploration Expenditures
CapitalAndExplorationExpenditures
671000000
CY2016 imo Capital And Exploration Expenditures
CapitalAndExplorationExpenditures
1161000000
CY2018Q4 us-gaap Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
53944000000
CY2017Q4 us-gaap Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
52778000000
CY2016Q4 us-gaap Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
53515000000
CY2018Q4 us-gaap Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
19719000000
CY2017Q4 us-gaap Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
18305000000
CY2016Q4 us-gaap Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
17182000000
CY2016Q4 us-gaap Assets
Assets
41654000000
CY2018 us-gaap Asset Impairment Charges
AssetImpairmentCharges
46000000
CY2017Q4 us-gaap Construction In Progress Gross
ConstructionInProgressGross
1047000000
CY2016Q4 us-gaap Construction In Progress Gross
ConstructionInProgressGross
2705000000
CY2018 imo Cash Outflow From Income Taxes Plus Investment Tax Credit
CashOutflowFromIncomeTaxesPlusInvestmentTaxCredit
162000000
CY2017 imo Cash Outflow From Income Taxes Plus Investment Tax Credit
CashOutflowFromIncomeTaxesPlusInvestmentTaxCredit
322000000
CY2016 imo Cash Outflow From Income Taxes Plus Investment Tax Credit
CashOutflowFromIncomeTaxesPlusInvestmentTaxCredit
172000000
CY2017Q4 us-gaap Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate
EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate
0.01
CY2017Q4 us-gaap Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
5564000000
CY2016Q4 us-gaap Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
5361000000
CY2018Q4 imo Deferred Tax Liabilities Deferred Expense Capitalized Successful Drilling And Land Acquisition
DeferredTaxLiabilitiesDeferredExpenseCapitalizedSuccessfulDrillingAndLandAcquisition
856000000
CY2017Q4 imo Deferred Tax Liabilities Deferred Expense Capitalized Successful Drilling And Land Acquisition
DeferredTaxLiabilitiesDeferredExpenseCapitalizedSuccessfulDrillingAndLandAcquisition
762000000
CY2016Q4 imo Deferred Tax Liabilities Deferred Expense Capitalized Successful Drilling And Land Acquisition
DeferredTaxLiabilitiesDeferredExpenseCapitalizedSuccessfulDrillingAndLandAcquisition
891000000
CY2018Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions
336000000
CY2017Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions
422000000
CY2016Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions
457000000
CY2018Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations
381000000
CY2017Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations
376000000
CY2016Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations
396000000
CY2018Q4 us-gaap Deferred Tax Liabilities Deferred Expense Capitalized Interest
DeferredTaxLiabilitiesDeferredExpenseCapitalizedInterest
121000000
CY2017Q4 us-gaap Deferred Tax Liabilities Deferred Expense Capitalized Interest
DeferredTaxLiabilitiesDeferredExpenseCapitalizedInterest
118000000
CY2016Q4 us-gaap Deferred Tax Liabilities Deferred Expense Capitalized Interest
DeferredTaxLiabilitiesDeferredExpenseCapitalizedInterest
114000000
CY2018Q4 imo Deferred Tax Assets Inventory Noncurrent
DeferredTaxAssetsInventoryNoncurrent
107000000
CY2017Q4 imo Deferred Tax Assets Inventory Noncurrent
DeferredTaxAssetsInventoryNoncurrent
318000000
CY2016Q4 us-gaap Deferred Tax Assets Capital Loss Carryforwards
DeferredTaxAssetsCapitalLossCarryforwards
1056000000
CY2018Q4 imo Deferred Tax Assets Other Non Current
DeferredTaxAssetsOtherNonCurrent
150000000
CY2017Q4 imo Deferred Tax Assets Other Non Current
DeferredTaxAssetsOtherNonCurrent
196000000
CY2016Q4 imo Deferred Tax Assets Other Non Current
DeferredTaxAssetsOtherNonCurrent
212000000
CY2018Q4 imo Deferred Income Tax Liabilities Net Noncurrent
DeferredIncomeTaxLiabilitiesNetNoncurrent
5071000000
CY2017Q4 imo Deferred Income Tax Liabilities Net Noncurrent
DeferredIncomeTaxLiabilitiesNetNoncurrent
4196000000
CY2018 us-gaap Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax
-104000000
CY2017 us-gaap Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax
-38000000
CY2016 us-gaap Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations
UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
5000000
CY2016 us-gaap Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax
34000000
CY2018 us-gaap Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
-298000000
CY2016 us-gaap Stock Repurchased And Retired During Period Shares
StockRepurchasedAndRetiredDuringPeriodShares
1000
CY2016Q4 us-gaap Common Stock Shares Outstanding
CommonStockSharesOutstanding
847599000
CY2016 us-gaap Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
44000000
CY2016 us-gaap Effective Income Tax Rate Reconciliation Tax Settlements
EffectiveIncomeTaxRateReconciliationTaxSettlements
0.114
CY2017 us-gaap Earnings Per Share Basic
EarningsPerShareBasic
0.58
CY2017Q4 us-gaap Unrecognized Tax Benefits
UnrecognizedTaxBenefits
78000000
CY2016Q4 us-gaap Unrecognized Tax Benefits
UnrecognizedTaxBenefits
106000000
CY2015Q4 us-gaap Unrecognized Tax Benefits
UnrecognizedTaxBenefits
132000000
CY2018 us-gaap Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
9000000
CY2017 us-gaap Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
2000000
CY2016 us-gaap Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
2000000
CY2018 us-gaap Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
2000000
CY2016 us-gaap Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
18000000
CY2018 us-gaap Cash And Cash Equivalents Period Increase Decrease
CashAndCashEquivalentsPeriodIncreaseDecrease
-207000000
CY2017 us-gaap Cash And Cash Equivalents Period Increase Decrease
CashAndCashEquivalentsPeriodIncreaseDecrease
804000000
CY2016 us-gaap Cash And Cash Equivalents Period Increase Decrease
CashAndCashEquivalentsPeriodIncreaseDecrease
188000000
CY2018 us-gaap Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax
-402000000
CY2017 us-gaap Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax
-120000000
CY2016 us-gaap Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax
103000000
CY2016Q4 imo Deferred Income Tax Liabilities Net Noncurrent
DeferredIncomeTaxLiabilitiesNetNoncurrent
4005000000
CY2018 us-gaap Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
-14000000
CY2017 us-gaap Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
-58000000
CY2016 us-gaap Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
200000000
CY2018 us-gaap Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
773000000
CY2017 us-gaap Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
150000000
CY2016 us-gaap Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
79000000
CY2018 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.269
CY2017 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.269
CY2016 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.268
CY2018 us-gaap Effective Income Tax Rate Reconciliation Disposition Of Business
EffectiveIncomeTaxRateReconciliationDispositionOfBusiness
-0.003
CY2017 us-gaap Effective Income Tax Rate Reconciliation Disposition Of Business
EffectiveIncomeTaxRateReconciliationDispositionOfBusiness
-0.053
CY2016 us-gaap Effective Income Tax Rate Reconciliation Disposition Of Business
EffectiveIncomeTaxRateReconciliationDispositionOfBusiness
-0.116
CY2017 us-gaap Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate
EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate
0.009
CY2018 us-gaap Effective Income Tax Rate Reconciliation Other Adjustments
EffectiveIncomeTaxRateReconciliationOtherAdjustments
-0.019
CY2017 us-gaap Effective Income Tax Rate Reconciliation Other Adjustments
EffectiveIncomeTaxRateReconciliationOtherAdjustments
-0.066
CY2016 us-gaap Effective Income Tax Rate Reconciliation Other Adjustments
EffectiveIncomeTaxRateReconciliationOtherAdjustments
-0.038
CY2018 us-gaap Effective Income Tax Rate Reconciliation Tax Settlements
EffectiveIncomeTaxRateReconciliationTaxSettlements
0.247
CY2017 us-gaap Effective Income Tax Rate Reconciliation Tax Settlements
EffectiveIncomeTaxRateReconciliationTaxSettlements
0.159
CY2018 us-gaap Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities
UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
49000000
CY2017 us-gaap Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities
UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
30000000
CY2016 us-gaap Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities
UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
5000000
CY2018Q4 us-gaap Unrecognized Tax Benefits
UnrecognizedTaxBenefits
36000000
CY2018 us-gaap Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
3922000000
CY2017 us-gaap Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
2763000000
CY2016 us-gaap Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
2015000000
CY2018 us-gaap Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
-1559000000
CY2017 us-gaap Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
-781000000
CY2016 us-gaap Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
1947000000
CY2018 us-gaap Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
-2570000000
CY2017 us-gaap Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
-1178000000
CY2016 us-gaap Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
-3774000000
CY2016Q4 us-gaap Common Stock Value
CommonStockValue
1566000000
CY2017 us-gaap Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
2000
CY2017 us-gaap Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
CY2017 us-gaap Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
-82000000
CY2016 us-gaap Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
69000000
CY2018Q4 us-gaap Defined Benefit Plan Health Care Cost Trend Rate Assumed Next Fiscal Year
DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear
0.0450
CY2018 us-gaap Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets
DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets
0.050
CY2018 imo Actual Rate Of Return
ActualRateOfReturn
0.082
CY2017 imo Actual Rate Of Return
ActualRateOfReturn
0.066
CY2018 us-gaap Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
41000000
CY2017 us-gaap Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
40000000
CY2017 us-gaap Stock Repurchased And Retired During Period Shares
StockRepurchasedAndRetiredDuringPeriodShares
16359000
CY2018 us-gaap Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
CY2018 us-gaap Stock Repurchased And Retired During Period Shares
StockRepurchasedAndRetiredDuringPeriodShares
48679000
CY2018Q4 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
1100000000
CY2017Q4 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
1100000000
CY2015Q4 us-gaap Common Stock Shares Outstanding
CommonStockSharesOutstanding
847599000
CY2015Q4 us-gaap Common Stock Value
CommonStockValue
1566000000
CY2016 us-gaap Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
1000
CY2016 us-gaap Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
CY2018 imo Defined Benefit Plan Target Allocation To Private Equity Venture Capital
DefinedBenefitPlanTargetAllocationToPrivateEquityVentureCapital
0.03
CY2018Q4 us-gaap Defined Benefit Plan Expected Future Employer Contributions Next Fiscal Year
DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
212000000
CY2017Q4 us-gaap Asset Retirement Obligation
AssetRetirementObligation
1397000000
CY2016Q4 us-gaap Asset Retirement Obligation
AssetRetirementObligation
1472000000
CY2018 imo Asset Retirement Obligation Liabilities Incurred Settled
AssetRetirementObligationLiabilitiesIncurredSettled
-5000000
CY2017 imo Asset Retirement Obligation Liabilities Incurred Settled
AssetRetirementObligationLiabilitiesIncurredSettled
-124000000
CY2018 us-gaap Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
85000000
CY2017 us-gaap Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
92000000
CY2018 us-gaap Asset Retirement Obligation Liabilities Settled
AssetRetirementObligationLiabilitiesSettled
60000000
CY2017 us-gaap Asset Retirement Obligation Liabilities Settled
AssetRetirementObligationLiabilitiesSettled
43000000
CY2018Q4 us-gaap Asset Retirement Obligation
AssetRetirementObligation
1417000000
CY2018Q4 us-gaap Pension And Other Postretirement Defined Benefit Plans Current Liabilities
PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities
55000000
CY2017Q4 us-gaap Pension And Other Postretirement Defined Benefit Plans Current Liabilities
PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities
56000000
CY2018Q4 imo Asset Retirement Obligation And Other Environmental Liabilities Current
AssetRetirementObligationAndOtherEnvironmentalLiabilitiesCurrent
118000000
CY2017Q4 imo Asset Retirement Obligation And Other Environmental Liabilities Current
AssetRetirementObligationAndOtherEnvironmentalLiabilitiesCurrent
101000000
CY2017 imo Asset Retirement Obligations Discounted Rate
AssetRetirementObligationsDiscountedRate
0.06
CY2018 imo Realized And Unrealized Revenue On Derivative Instrument
RealizedAndUnrealizedRevenueOnDerivativeInstrument
6000000
CY2018 imo Realized And Unrealized Purchase On Derivative Instrument
RealizedAndUnrealizedPurchaseOnDerivativeInstrument
24000000
CY2017 imo Realized And Unrealized Purchase On Derivative Instrument
RealizedAndUnrealizedPurchaseOnDerivativeInstrument
5000000
CY2018 us-gaap Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
32000000
CY2017 us-gaap Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
14000000
CY2016 us-gaap Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
83000000
CY2018 us-gaap Employee Service Share Based Compensation Tax Benefit From Compensation Expense
EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
9000000
CY2017 us-gaap Employee Service Share Based Compensation Tax Benefit From Compensation Expense
EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
4000000
CY2016 us-gaap Employee Service Share Based Compensation Tax Benefit From Compensation Expense
EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
24000000
CY2017 us-gaap Employee Service Share Based Compensation Cash Flow Effect Cash Used To Settle Awards
EmployeeServiceShareBasedCompensationCashFlowEffectCashUsedToSettleAwards
71000000
CY2016 us-gaap Employee Service Share Based Compensation Cash Flow Effect Cash Used To Settle Awards
EmployeeServiceShareBasedCompensationCashFlowEffectCashUsedToSettleAwards
79000000
CY2018 us-gaap Employee Service Share Based Compensation Cash Flow Effect Cash Used To Settle Awards
EmployeeServiceShareBasedCompensationCashFlowEffectCashUsedToSettleAwards
59000000
CY2018 imo Book Value Of Assets Sold
BookValueOfAssetsSold
5000000
CY2017 imo Book Value Of Assets Sold
BookValueOfAssetsSold
12000000
CY2018 us-gaap Gain Loss On Disposition Of Assets1
GainLossOnDispositionOfAssets1
54000000
CY2017 us-gaap Gain Loss On Disposition Of Assets1
GainLossOnDispositionOfAssets1
220000000
CY2018 imo Net Gain Loss On Asset Sales After Tax
NetGainLossOnAssetSalesAfterTax
38000000
CY2017 imo Net Gain Loss On Asset Sales After Tax
NetGainLossOnAssetSalesAfterTax
192000000
CY2016 us-gaap Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
3021000000
CY2016 imo Book Value Of Assets Sold
BookValueOfAssetsSold
777000000
CY2016 us-gaap Gain Loss On Disposition Of Assets1
GainLossOnDispositionOfAssets1
2244000000
CY2016 imo Net Gain Loss On Asset Sales After Tax
NetGainLossOnAssetSalesAfterTax
1908000000
CY2017Q4 us-gaap Other Commitment
OtherCommitment
35000000
CY2016Q4 us-gaap Other Commitment
OtherCommitment
42000000
CY2018 us-gaap Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
2000
CY2018 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
807500000
CY2017 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
842900000
CY2016 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
847600000
CY2018Q4 us-gaap Capital Lease Obligations Current
CapitalLeaseObligationsCurrent
27000000
CY2017 us-gaap Research And Development Expense
ResearchAndDevelopmentExpense
111000000
CY2017 us-gaap Earnings Per Share Basic
EarningsPerShareBasic
0.58
CY2016 us-gaap Earnings Per Share Basic
EarningsPerShareBasic
2.55
CY2018Q2 us-gaap Stock Repurchase Program Number Of Shares Authorized To Be Repurchased
StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
40391196
CY2018Q4 imo Majority Interest Ownership Percentage
MajorityInterestOwnershipPercentage
0.696
CY2018 us-gaap Stock Repurchase Program Period In Force1
StockRepurchaseProgramPeriodInForce1
P12M
CY2018Q2 imo Percentage Of Shares To Be Repurchased
PercentageOfSharesToBeRepurchased
0.05
CY2018 us-gaap Long Term Purchase Commitment Amount
LongTermPurchaseCommitmentAmount
0
CY2018Q4 us-gaap Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent
PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
1195000000
CY2017Q4 us-gaap Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent
PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
1529000000
CY2018Q4 imo Asset Retirement Obligation And Other Environmental Liabilities Noncurrent
AssetRetirementObligationAndOtherEnvironmentalLiabilitiesNoncurrent
1435000000
CY2017Q4 imo Asset Retirement Obligation And Other Environmental Liabilities Noncurrent
AssetRetirementObligationAndOtherEnvironmentalLiabilitiesNoncurrent
1460000000
CY2018Q4 us-gaap Deferred Compensation Sharebased Arrangements Liability Classified Noncurrent
DeferredCompensationSharebasedArrangementsLiabilityClassifiedNoncurrent
78000000
CY2017Q4 us-gaap Deferred Compensation Sharebased Arrangements Liability Classified Noncurrent
DeferredCompensationSharebasedArrangementsLiabilityClassifiedNoncurrent
99000000
CY2018Q4 us-gaap Other Sundry Liabilities Noncurrent
OtherSundryLiabilitiesNoncurrent
235000000
CY2017Q4 us-gaap Other Sundry Liabilities Noncurrent
OtherSundryLiabilitiesNoncurrent
692000000
CY2018Q4 us-gaap Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
2943000000
CY2017Q4 us-gaap Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
3780000000
CY2018 imo Asset Retirement Obligations Discounted Rate
AssetRetirementObligationsDiscountedRate
0.06
CY2018 us-gaap Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax
OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax
59000000
CY2017 us-gaap Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax
OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax
-20000000
CY2016 us-gaap Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax
OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax
-77000000
CY2018 us-gaap Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax
OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax
45000000
CY2017 us-gaap Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax
OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax
58000000
CY2016 us-gaap Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax
OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax
43000000
CY2018 us-gaap Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax
-104000000
CY2017 us-gaap Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax
-38000000
CY2016 us-gaap Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax
34000000
CY2017Q4 us-gaap Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
-1815000000
CY2016Q4 us-gaap Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
-1897000000
CY2015Q4 us-gaap Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
-1828000000
CY2018 us-gaap Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax
OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax
158000000
CY2017 us-gaap Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax
OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax
-54000000
CY2016 us-gaap Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax
OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax
-210000000
CY2018 us-gaap Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax
OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax
140000000
CY2017 us-gaap Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax
OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax
136000000
CY2016 us-gaap Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax
OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax
141000000
CY2018Q4 us-gaap Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
-1517000000
CY2018Q4 us-gaap Energy Related Inventory Petroleum
EnergyRelatedInventoryPetroleum
731000000
CY2018Q4 imo Petroleum Products Inventory
PetroleumProductsInventory
473000000
CY2018Q4 us-gaap Energy Related Inventory Chemicals
EnergyRelatedInventoryChemicals
72000000
CY2018Q4 imo Natural Gas And Other Products Inventory
NaturalGasAndOtherProductsInventory
21000000
CY2018Q4 us-gaap Inventory Finished Goods And Work In Process
InventoryFinishedGoodsAndWorkInProcess
1297000000
CY2017Q4 us-gaap Energy Related Inventory Petroleum
EnergyRelatedInventoryPetroleum
690000000
CY2017Q4 imo Petroleum Products Inventory
PetroleumProductsInventory
307000000
CY2017Q4 us-gaap Energy Related Inventory Chemicals
EnergyRelatedInventoryChemicals
42000000
CY2017Q4 imo Natural Gas And Other Products Inventory
NaturalGasAndOtherProductsInventory
36000000
CY2017Q4 us-gaap Inventory Finished Goods And Work In Process
InventoryFinishedGoodsAndWorkInProcess
1075000000
CY2017 us-gaap Effect Of Lifo Inventory Liquidation On Income
EffectOfLIFOInventoryLiquidationOnIncome
5000000
CY2016 us-gaap Effect Of Lifo Inventory Liquidation On Income
EffectOfLIFOInventoryLiquidationOnIncome
5000000
CY2018Q4 us-gaap Excess Of Replacement Or Current Costs Over Stated Lifo Value
ExcessOfReplacementOrCurrentCostsOverStatedLIFOValue
900000000
CY2017Q4 us-gaap Excess Of Replacement Or Current Costs Over Stated Lifo Value
ExcessOfReplacementOrCurrentCostsOverStatedLIFOValue
1400000000
CY2018 us-gaap Research And Development Expense
ResearchAndDevelopmentExpense
110000000
CY2017 imo Capitalized Lease Obligation Average Imputed Rate
CapitalizedLeaseObligationAverageImputedRate
0.070
CY2018Q4 us-gaap Capitalized Exploratory Well Costs That Have Been Capitalized For Period Of One Year Or Less
CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodOfOneYearOrLess
CY2017Q4 us-gaap Capital Lease Obligations Current
CapitalLeaseObligationsCurrent
27000000
CY2018Q4 us-gaap Operating Leases Future Minimum Payments Due Current
OperatingLeasesFutureMinimumPaymentsDueCurrent
130000000
CY2016 us-gaap Interest Expense Debt
InterestExpenseDebt
72000000
CY2018 imo Interest Income Expense Other
InterestIncomeExpenseOther
-3000000
CY2017 imo Interest Income Expense Other
InterestIncomeExpenseOther
-13000000
CY2016 imo Interest Income Expense Other
InterestIncomeExpenseOther
7000000
CY2018 us-gaap Interest Income Expense Net
InterestIncomeExpenseNet
-108000000
CY2017 us-gaap Interest Income Expense Net
InterestIncomeExpenseNet
-78000000
CY2016 us-gaap Interest Income Expense Net
InterestIncomeExpenseNet
-65000000
CY2018 us-gaap Interest Paid
InterestPaid
88000000
CY2017 us-gaap Interest Paid
InterestPaid
58000000
CY2016 us-gaap Interest Paid
InterestPaid
73000000
CY2018Q4 us-gaap Short Term Debt Weighted Average Interest Rate
ShortTermDebtWeightedAverageInterestRate
0.015
CY2016 us-gaap Capitalized Exploratory Well Cost Charged To Expense1
CapitalizedExploratoryWellCostChargedToExpense1
24000000
CY2018 us-gaap Reclassification To Well Facilities And Equipment Based On Determination Of Proved Reserves
ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReserves
CY2017 us-gaap Reclassification To Well Facilities And Equipment Based On Determination Of Proved Reserves
ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReserves
CY2018Q4 imo Maximum Longterm Borrowing From Affiliate
MaximumLongtermBorrowingFromAffiliate
7750000000
CY2018 imo Cancelation Period Longterm Borrowing From Affiliate
CancelationPeriodLongtermBorrowingFromAffiliate
P370D
CY2017Q4 us-gaap Short Term Debt Weighted Average Interest Rate
ShortTermDebtWeightedAverageInterestRate
0.009
CY2016Q4 us-gaap Short Term Debt Weighted Average Interest Rate
ShortTermDebtWeightedAverageInterestRate
0.008
CY2018Q4 us-gaap Debt Instrument Interest Rate Effective Percentage
DebtInstrumentInterestRateEffectivePercentage
0.020
CY2017Q4 us-gaap Debt Instrument Interest Rate Effective Percentage
DebtInstrumentInterestRateEffectivePercentage
0.013
CY2016Q4 us-gaap Debt Instrument Interest Rate Effective Percentage
DebtInstrumentInterestRateEffectivePercentage
0.010
CY2018 imo Capitalized Lease Obligation Average Imputed Rate
CapitalizedLeaseObligationAverageImputedRate
0.071
CY2016 us-gaap Research And Development Expense
ResearchAndDevelopmentExpense
152000000
CY2018Q4 us-gaap Accrual For Taxes Other Than Income Taxes Current And Noncurrent
AccrualForTaxesOtherThanIncomeTaxesCurrentAndNoncurrent
413000000
CY2017Q4 us-gaap Accrual For Taxes Other Than Income Taxes Current And Noncurrent
AccrualForTaxesOtherThanIncomeTaxesCurrentAndNoncurrent
437000000
CY2018 us-gaap Interest And Debt Expense
InterestAndDebtExpense
133000000
CY2017 us-gaap Interest And Debt Expense
InterestAndDebtExpense
103000000
CY2016 us-gaap Interest And Debt Expense
InterestAndDebtExpense
121000000
CY2018 us-gaap Interest Paid Capitalized
InterestPaidCapitalized
28000000
CY2017 us-gaap Interest Paid Capitalized
InterestPaidCapitalized
38000000
CY2016 us-gaap Interest Paid Capitalized
InterestPaidCapitalized
49000000
CY2018 us-gaap Interest Expense Debt
InterestExpenseDebt
105000000
CY2017 us-gaap Interest Expense Debt
InterestExpenseDebt
65000000
CY2018Q4 us-gaap Operating Leases Future Minimum Payments Due In Two Years
OperatingLeasesFutureMinimumPaymentsDueInTwoYears
82000000
CY2018Q4 us-gaap Operating Leases Future Minimum Payments Due In Three Years
OperatingLeasesFutureMinimumPaymentsDueInThreeYears
43000000
CY2018Q4 us-gaap Operating Leases Future Minimum Payments Due In Four Years
OperatingLeasesFutureMinimumPaymentsDueInFourYears
13000000
CY2018Q4 us-gaap Operating Leases Future Minimum Payments Due In Five Years
OperatingLeasesFutureMinimumPaymentsDueInFiveYears
11000000
CY2018Q4 us-gaap Operating Leases Future Minimum Payments Due Thereafter
OperatingLeasesFutureMinimumPaymentsDueThereafter
12000000
CY2018Q4 us-gaap Operating Leases Future Minimum Payments Due
OperatingLeasesFutureMinimumPaymentsDue
291000000
CY2018 us-gaap Lease And Rental Expense
LeaseAndRentalExpense
221000000
CY2017 us-gaap Lease And Rental Expense
LeaseAndRentalExpense
206000000
CY2016 us-gaap Lease And Rental Expense
LeaseAndRentalExpense
253000000
CY2018Q4 us-gaap Long Term Debt Noncurrent
LongTermDebtNoncurrent
4447000000
CY2017Q4 us-gaap Long Term Debt Noncurrent
LongTermDebtNoncurrent
4447000000
CY2018Q4 us-gaap Capital Lease Obligations Noncurrent
CapitalLeaseObligationsNoncurrent
531000000
CY2017Q4 us-gaap Capital Lease Obligations Noncurrent
CapitalLeaseObligationsNoncurrent
558000000
CY2018Q4 us-gaap Long Term Debt And Capital Lease Obligations
LongTermDebtAndCapitalLeaseObligations
4978000000
CY2017Q4 us-gaap Long Term Debt And Capital Lease Obligations
LongTermDebtAndCapitalLeaseObligations
5005000000
CY2018 us-gaap Capitalized Exploratory Well Cost Additions Pending Determination Of Proved Reserves
CapitalizedExploratoryWellCostAdditionsPendingDeterminationOfProvedReserves
CY2017 us-gaap Capitalized Exploratory Well Cost Additions Pending Determination Of Proved Reserves
CapitalizedExploratoryWellCostAdditionsPendingDeterminationOfProvedReserves
CY2017 us-gaap Capitalized Exploratory Well Cost Charged To Expense1
CapitalizedExploratoryWellCostChargedToExpense1
143000000
CY2017Q4 us-gaap Capitalized Exploratory Well Costs That Have Been Capitalized For Period Of One Year Or Less
CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodOfOneYearOrLess
CY2018Q4 imo Projects That Have Exploratory Well Costs That Have Been Capitalized
ProjectsThatHaveExploratoryWellCostsThatHaveBeenCapitalized
CY2017 us-gaap Weighted Average Number Diluted Shares Outstanding Adjustment
WeightedAverageNumberDilutedSharesOutstandingAdjustment
2800000
CY2018 imo Number Of Projects With Capitalized Wells Drilled In Preceding Twelve Months
NumberOfProjectsWithCapitalizedWellsDrilledInPrecedingTwelveMonths
CY2016Q4 us-gaap Projects That Have Exploratory Well Costs That Have Been Capitalized For Period Greater Than One Year
ProjectsThatHaveExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear
1
CY2017 imo Number Of Projects With Capitalized Wells Drilled In Preceding Twelve Months
NumberOfProjectsWithCapitalizedWellsDrilledInPrecedingTwelveMonths
CY2018Q4 us-gaap Projects That Have Exploratory Well Costs That Have Been Capitalized For Period Greater Than One Year
ProjectsThatHaveExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear
CY2017Q4 us-gaap Projects That Have Exploratory Well Costs That Have Been Capitalized For Period Greater Than One Year
ProjectsThatHaveExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear
CY2016 us-gaap Weighted Average Number Diluted Shares Outstanding Adjustment
WeightedAverageNumberDilutedSharesOutstandingAdjustment
2900000
CY2017Q4 imo Projects That Have Exploratory Well Costs That Have Been Capitalized
ProjectsThatHaveExploratoryWellCostsThatHaveBeenCapitalized
CY2016Q4 imo Projects That Have Exploratory Well Costs That Have Been Capitalized
ProjectsThatHaveExploratoryWellCostsThatHaveBeenCapitalized
1
CY2018 us-gaap Weighted Average Number Diluted Shares Outstanding Adjustment
WeightedAverageNumberDilutedSharesOutstandingAdjustment
2600000
CY2018 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
810100000
CY2017 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
845700000
CY2016 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
850500000
CY2017 us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
0.58
CY2018 us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
0.73
CY2017 us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
0.63
CY2016 us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
0.59
CY2019Q1 dei Entity Common Stock Shares Outstanding
EntityCommonStockSharesOutstanding
777576359
CY2018Q2 dei Entity Public Float
EntityPublicFloat
10663467561
CY2016Q4 us-gaap Capitalized Exploratory Well Costs That Have Been Capitalized For Period Of One Year Or Less
CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodOfOneYearOrLess
CY2018Q4 us-gaap Capital Leases Future Minimum Payments Due In Two Years
CapitalLeasesFutureMinimumPaymentsDueInTwoYears
14000000
CY2018Q4 us-gaap Capital Leases Future Minimum Payments Due In Three Years
CapitalLeasesFutureMinimumPaymentsDueInThreeYears
14000000
CY2018Q4 us-gaap Capital Leases Future Minimum Payments Due In Four Years
CapitalLeasesFutureMinimumPaymentsDueInFourYears
14000000
CY2018Q4 us-gaap Capital Leases Future Minimum Payments Due In Five Years
CapitalLeasesFutureMinimumPaymentsDueInFiveYears
14000000
CY2018 us-gaap Effect Of Lifo Inventory Liquidation On Income
EffectOfLIFOInventoryLiquidationOnIncome
16000000
CY2018 us-gaap Earnings Per Share Basic
EarningsPerShareBasic
2.87
CY2018Q4 us-gaap Long Term Debt Fair Value
LongTermDebtFairValue
4447000000
CY2018Q4 imo Derivative Instruments Not Designated As Hedging Instruments Asset At Carrying Value
DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtCarryingValue
31000000
CY2017Q4 imo Derivative Instruments Not Designated As Hedging Instruments Asset At Carrying Value
DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtCarryingValue
CY2018Q4 imo Derivative Instruments Not Designated As Hedging Instruments Liability At Carrying Value
DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtCarryingValue
15000000
CY2017Q4 imo Derivative Instruments Not Designated As Hedging Instruments Liability At Carrying Value
DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtCarryingValue
4000000
CY2018 us-gaap Gain Loss On Derivative Instruments Net Pretax
GainLossOnDerivativeInstrumentsNetPretax
-18000000
CY2017 us-gaap Gain Loss On Derivative Instruments Net Pretax
GainLossOnDerivativeInstrumentsNetPretax
-5000000
CY2018 imo After Tax Impact Of Change In Allocation
AfterTaxImpactOfChangeInAllocation
78000000
CY2018 us-gaap Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1
DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1
5000000
CY2015Q4 us-gaap Capitalized Exploratory Well Costs
CapitalizedExploratoryWellCosts
167000000
CY2018 us-gaap Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation
DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation
65000000
CY2018 us-gaap Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1
DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1
50000000
CY2018 imo Intersegment Sales
IntersegmentSales
CY2018 imo Defined Benefit Plan Effect Of One Percentage Point Increase In Discount Rate On Benefit Obligation
DefinedBenefitPlanEffectOfOnePercentagePointIncreaseInDiscountRateOnBenefitObligation
1110000000
CY2018 imo Defined Benefit Plan Effect Of One Percentage Point Decrease In Discount Rate On Benefit Obligation
DefinedBenefitPlanEffectOfOnePercentagePointDecreaseInDiscountRateOnBenefitObligation
1425000000
CY2018 imo Defined Benefit Plan Effect Of One Percentage Point Increase In Rate Of Pay Increases On Net Benefit Cost
DefinedBenefitPlanEffectOfOnePercentagePointIncreaseInRateOfPayIncreasesOnNetBenefitCost
65000000
CY2018Q4 us-gaap Defined Benefit Plan Fair Value Of Plan Assets
DefinedBenefitPlanFairValueOfPlanAssets
7691000000
CY2018Q4 imo Defined Benefit Plan Net Value Of Plan Assets
DefinedBenefitPlanNetValueOfPlanAssets
7658000000
CY2017Q4 us-gaap Defined Benefit Plan Fair Value Of Plan Assets
DefinedBenefitPlanFairValueOfPlanAssets
7870000000
CY2017Q4 imo Defined Benefit Plan Net Value Of Plan Assets
DefinedBenefitPlanNetValueOfPlanAssets
7836000000
CY2018 imo Defined Benefit Plan Effect Of One Percentage Point Increase In Rate Of Return On Plan Assets On Net Benefit Cost
DefinedBenefitPlanEffectOfOnePercentagePointIncreaseInRateOfReturnOnPlanAssetsOnNetBenefitCost
80000000
CY2018 imo Defined Benefit Plan Effect Of One Percentage Point Decrease In Rate Of Return On Plan Assets On Net Benefit Cost
DefinedBenefitPlanEffectOfOnePercentagePointDecreaseInRateOfReturnOnPlanAssetsOnNetBenefitCost
80000000
CY2018 imo Defined Benefit Plan Effect Of One Percentage Point Increase In Discount Rate On Net Benefit Cost
DefinedBenefitPlanEffectOfOnePercentagePointIncreaseInDiscountRateOnNetBenefitCost
95000000
CY2018 imo Defined Benefit Plan Effect Of One Percentage Point Decrease In Discount Rate On Net Benefit Cost
DefinedBenefitPlanEffectOfOnePercentagePointDecreaseInDiscountRateOnNetBenefitCost
130000000
CY2018 imo Defined Benefit Plan Effect Of One Percentage Point Decrease In Rate Of Pay Increases On Plan Assets On Net Benefit Cost
DefinedBenefitPlanEffectOfOnePercentagePointDecreaseInRateOfPayIncreasesOnPlanAssetsOnNetBenefitCost
50000000
CY2018 imo Defined Benefit Plan Effect Of One Percentage Point Increase In Rate Of Pay Increases On Benefit Obligation
DefinedBenefitPlanEffectOfOnePercentagePointIncreaseInRateOfPayIncreasesOnBenefitObligation
255000000
CY2018 imo Defined Benefit Plan Effect Of One Percentage Point Decrease In Rate Of Pay Increases On Benefit Obligation
DefinedBenefitPlanEffectOfOnePercentagePointDecreaseInRateOfPayIncreasesOnBenefitObligation
215000000
CY2018 us-gaap Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components
DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents
6000000
CY2016 us-gaap Capitalized Exploratory Well Cost Additions Pending Determination Of Proved Reserves
CapitalizedExploratoryWellCostAdditionsPendingDeterminationOfProvedReserves
CY2016 us-gaap Reclassification To Well Facilities And Equipment Based On Determination Of Proved Reserves
ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReserves
CY2016 imo Number Of Projects With Capitalized Wells Drilled In Preceding Twelve Months
NumberOfProjectsWithCapitalizedWellsDrilledInPrecedingTwelveMonths
CY2016Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
36333000000
CY2018Q4 us-gaap Capitalized Exploratory Well Costs
CapitalizedExploratoryWellCosts
CY2017Q4 us-gaap Capitalized Exploratory Well Costs
CapitalizedExploratoryWellCosts
CY2016Q4 us-gaap Capitalized Exploratory Well Costs
CapitalizedExploratoryWellCosts
143000000

Files In Submission

Name View Source Status
0001193125-19-054202-index-headers.html Edgar Link pending
0001193125-19-054202-index.html Edgar Link pending
0001193125-19-054202.txt Edgar Link pending
0001193125-19-054202-xbrl.zip Edgar Link pending
d643211d10k.htm Edgar Link pending
d643211dex311.htm Edgar Link pending
d643211dex312.htm Edgar Link pending
d643211dex321.htm Edgar Link pending
d643211dex322.htm Edgar Link pending
FilingSummary.xml Edgar Link unprocessable
Financial_Report.xlsx Edgar Link pending
g64321112.jpg Edgar Link pending
g64321158.jpg Edgar Link pending
g6432116.jpg Edgar Link pending
g64321171_page2.jpg Edgar Link pending
g64321172.jpg Edgar Link pending
g64321181.jpg Edgar Link pending
g64321182.jpg Edgar Link pending
g64321191.jpg Edgar Link pending
g64321192.jpg Edgar Link pending
g643211g01p40.jpg Edgar Link pending
g643211g01p41.jpg Edgar Link pending
g643211g01p42.jpg Edgar Link pending
g643211g02p40.jpg Edgar Link pending
g643211g02p41.jpg Edgar Link pending
g643211g02p42.jpg Edgar Link pending
g643211g03p40.jpg Edgar Link pending
g643211g03p41.jpg Edgar Link pending
g643211g04p40.jpg Edgar Link pending
g643211g04p41.jpg Edgar Link pending
g643211g77p44.jpg Edgar Link pending
g643211g87l87.jpg Edgar Link pending
g643211g97d44.jpg Edgar Link pending
g643211g97g64.jpg Edgar Link pending
g643211page039.jpg Edgar Link pending
g643211page040.jpg Edgar Link pending
g643211page043.jpg Edgar Link pending
g643211page044a.jpg Edgar Link pending
g643211page044b.jpg Edgar Link pending
imo-20181231.xml Edgar Link completed
imo-20181231.xsd Edgar Link pending
imo-20181231_cal.xml Edgar Link unprocessable
imo-20181231_def.xml Edgar Link unprocessable
imo-20181231_lab.xml Edgar Link unprocessable
imo-20181231_pre.xml Edgar Link unprocessable
R1.htm Edgar Link pending
R10.htm Edgar Link pending
R11.htm Edgar Link pending
R12.htm Edgar Link pending
R13.htm Edgar Link pending
R14.htm Edgar Link pending
R15.htm Edgar Link pending
R16.htm Edgar Link pending
R17.htm Edgar Link pending
R18.htm Edgar Link pending
R19.htm Edgar Link pending
R2.htm Edgar Link pending
R20.htm Edgar Link pending
R21.htm Edgar Link pending
R22.htm Edgar Link pending
R23.htm Edgar Link pending
R24.htm Edgar Link pending
R25.htm Edgar Link pending
R26.htm Edgar Link pending
R27.htm Edgar Link pending
R28.htm Edgar Link pending
R29.htm Edgar Link pending
R3.htm Edgar Link pending
R30.htm Edgar Link pending
R31.htm Edgar Link pending
R32.htm Edgar Link pending
R33.htm Edgar Link pending
R34.htm Edgar Link pending
R35.htm Edgar Link pending
R36.htm Edgar Link pending
R37.htm Edgar Link pending
R38.htm Edgar Link pending
R39.htm Edgar Link pending
R4.htm Edgar Link pending
R40.htm Edgar Link pending
R41.htm Edgar Link pending
R42.htm Edgar Link pending
R43.htm Edgar Link pending
R44.htm Edgar Link pending
R45.htm Edgar Link pending
R46.htm Edgar Link pending
R47.htm Edgar Link pending
R48.htm Edgar Link pending
R49.htm Edgar Link pending
R5.htm Edgar Link pending
R50.htm Edgar Link pending
R51.htm Edgar Link pending
R52.htm Edgar Link pending
R53.htm Edgar Link pending
R54.htm Edgar Link pending
R55.htm Edgar Link pending
R56.htm Edgar Link pending
R57.htm Edgar Link pending
R58.htm Edgar Link pending
R59.htm Edgar Link pending
R6.htm Edgar Link pending
R60.htm Edgar Link pending
R61.htm Edgar Link pending
R62.htm Edgar Link pending
R63.htm Edgar Link pending
R64.htm Edgar Link pending
R65.htm Edgar Link pending
R66.htm Edgar Link pending
R67.htm Edgar Link pending
R68.htm Edgar Link pending
R69.htm Edgar Link pending
R7.htm Edgar Link pending
R70.htm Edgar Link pending
R71.htm Edgar Link pending
R72.htm Edgar Link pending
R73.htm Edgar Link pending
R74.htm Edgar Link pending
R75.htm Edgar Link pending
R76.htm Edgar Link pending
R77.htm Edgar Link pending
R78.htm Edgar Link pending
R79.htm Edgar Link pending
R8.htm Edgar Link pending
R80.htm Edgar Link pending
R81.htm Edgar Link pending
R82.htm Edgar Link pending
R83.htm Edgar Link pending
R84.htm Edgar Link pending
R85.htm Edgar Link pending
R86.htm Edgar Link pending
R87.htm Edgar Link pending
R88.htm Edgar Link pending
R89.htm Edgar Link pending
R9.htm Edgar Link pending
R90.htm Edgar Link pending
R91.htm Edgar Link pending
R92.htm Edgar Link pending
R93.htm Edgar Link pending
R94.htm Edgar Link pending
R95.htm Edgar Link pending
R96.htm Edgar Link pending
report.css Edgar Link pending
Show.js Edgar Link pending