$XOM
EXXON MOBIL CORP Stock $xom

$xom Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000003408822000011 Filed on February 23, 2022

Income Statement

Concept	2021 Q4	2021	2020 Q4
Revenue	$81.31B	$285.6B	$45.74B
YoY Change	77.76%	57.38%	-27.43%
Cost Of Revenue	$56.27B	$191.2B	$32.04B
YoY Change	75.62%	53.65%	-27.6%
Gross Profit	$25.03B	$85.49B	$13.70B
YoY Change	82.76%	57.92%	-27.03%
Gross Profit Margin	30.79%	29.93%	29.95%
Selling, General & Admin	$10.46B	$9.574B	$9.520B
YoY Change	9.85%	-5.84%	-11.74%
% of Gross Profit	41.78%	11.2%	69.5%
Research & Development	$524.0M	$843.0M	$595.0M
YoY Change	-11.93%	-17.03%	66.67%
% of Gross Profit	2.09%	0.99%	4.34%
Depreciation & Amortization	$5.661B	$20.61B	$30.29B
YoY Change	-81.31%	-55.21%	515.3%
% of Gross Profit	22.61%	24.1%	221.15%
Operating Expenses	$16.74B	$10.42B	$15.77B
YoY Change	6.16%	-6.86%	-3.08%
Operating Profit	$8.290B	$75.08B	-$2.075B
YoY Change	-499.52%	74.79%	-183.1%
Interest Expense	$1.857B	$947.0M	$24.00M
YoY Change	7637.5%	-18.22%	-97.46%
% of Operating Profit	22.4%	1.26%
Other Income/Expense, Net	$1.582B	$2.291B	$465.0M
YoY Change	240.22%	91.56%	-84.35%
Pretax Income	$11.73B	$31.23B	-$26.61B
YoY Change	-144.07%	-208.14%	-514.92%
Income Tax	$2.703B	$7.636B	-$5.985B
% Of Pretax Income	23.05%	24.45%
Net Earnings	$8.870B	$23.04B	-$20.07B
YoY Change	-144.2%	-202.67%	-452.72%
Net Earnings / Revenue	10.91%	8.07%	-43.88%
Basic Earnings Per Share		$5.39
Diluted Earnings Per Share	$2.075M	$5.39	-$4.696M
COMMON SHARES
Basic Shares Outstanding		4.275B shares
Diluted Shares Outstanding

Balance Sheet

Concept	2021 Q4	2021	2020 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$6.802B	$6.802B	$4.364B
YoY Change	55.87%	55.87%	41.28%
Cash & Equivalents	$6.802B	$6.802B	$4.364B
Short-Term Investments
Other Short-Term Assets	$1.189B	$1.189B	$1.098B
YoY Change	8.29%	8.29%	-25.26%
Inventory	$18.78B	$18.78B	$18.85B
Prepaid Expenses
Receivables	$26.88B	$26.88B	$16.34B
Other Receivables	$5.500B	$5.500B	$0.00
Total Short-Term Assets	$59.15B	$59.15B	$44.89B
YoY Change	31.77%	31.77%	-10.31%
LONG-TERM ASSETS
Property, Plant & Equipment	$216.6B	$222.6B	$227.6B
YoY Change	-4.83%	-4.71%	-10.06%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$31.23B	$39.69B	$29.77B
YoY Change	4.88%	32.67%	1.64%
Other Assets	$18.02B	$11.94B	$16.79B
YoY Change	7.34%	-38.84%	2.6%
Total Long-Term Assets	$279.8B	$279.8B	$287.9B
YoY Change	-2.81%	-2.81%	-7.9%
TOTAL ASSETS
Total Short-Term Assets	$59.15B	$59.15B	$44.89B
Total Long-Term Assets	$279.8B	$279.8B	$287.9B
Total Assets	$338.9B	$338.9B	$332.8B
YoY Change	1.86%	1.86%	-8.23%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$50.77B	$49.40B	$35.22B
YoY Change	44.14%	45.07%	-13.26%
Accrued Expenses		$1.367B
YoY Change		17.04%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$1.884B	$0.00
YoY Change		-89.25%
Long-Term Debt Due	$2.392B	$2.396B	$2.930B
YoY Change	-18.36%	-18.34%	81.2%
Total Short-Term Liabilities	$56.64B	$56.64B	$56.36B
YoY Change	0.5%	0.5%	-11.92%
LONG-TERM LIABILITIES
Long-Term Debt	$43.43B	$43.56B	$47.18B
YoY Change	-7.96%	-7.94%	78.17%
Other Long-Term Liabilities	$21.72B	$42.87B	$21.24B
YoY Change	2.24%	-8.34%	-0.81%
Total Long-Term Liabilities	$21.72B	$86.43B	$21.24B
YoY Change	2.24%	-8.14%	-0.81%
TOTAL LIABILITIES
Total Short-Term Liabilities	$56.64B	$56.64B	$56.36B
Total Long-Term Liabilities	$21.72B	$86.43B	$21.24B
Total Liabilities	$163.2B	$170.3B	$168.6B
YoY Change	-3.19%	-2.99%	3.03%
SHAREHOLDERS EQUITY
Retained Earnings	$392.1B		$383.9B
YoY Change	2.11%		-8.88%
Common Stock	$15.75B		$15.69B
YoY Change	0.37%		0.33%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$225.5B		$225.8B
YoY Change	-0.14%		-0.03%
Treasury Stock Shares	3.780B shares		3.786B shares
Shareholders Equity	$168.6B	$168.6B	$157.2B
YoY Change
Total Liabilities & Shareholders Equity	$338.9B	$338.9B	$332.8B
YoY Change	1.86%	1.86%	-8.23%

Cashflow Statement

Concept	2021 Q4	2021	2020 Q4
OPERATING ACTIVITIES
Net Income	$8.870B	$23.04B	-$20.07B
YoY Change	-144.2%	-202.67%	-452.72%
Depreciation, Depletion And Amortization	$5.661B	$20.61B	$30.29B
YoY Change	-81.31%	-55.21%	515.3%
Cash From Operating Activities	$17.12B	$48.13B	$4.005B
YoY Change	327.57%	228.12%	-36.95%
INVESTING ACTIVITIES
Capital Expenditures	-$4.089B	$12.08B	-$3.629B
YoY Change	12.68%	-30.12%	-45.87%
Acquisitions
YoY Change
Other Investing Activities	$1.979B	$1.841B	$327.0M
YoY Change	505.2%	-256.41%	-86.6%
Cash From Investing Activities	-$2.110B	-$10.24B	-$3.302B
YoY Change	-36.1%	-44.55%	-22.56%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$155.0M
YoY Change		-61.73%
Debt Paid & Issued, Net		$8.000M
YoY Change		0.0%
Cash From Financing Activities	-12.96B	-$35.42B	-5.283B
YoY Change	145.3%	-770.26%	18.56%
NET CHANGE
Cash From Operating Activities	17.12B	$48.13B	4.005B
Cash From Investing Activities	-2.110B	-$10.24B	-3.302B
Cash From Financing Activities	-12.96B	-$35.42B	-5.283B
Net Change In Cash	2.055B	$2.438B	-4.580B
YoY Change	-144.87%	91.22%	93.41%
FREE CASH FLOW
Cash From Operating Activities	$17.12B	$48.13B	$4.005B
Capital Expenditures	-$4.089B	$12.08B	-$3.629B
Free Cash Flow	$21.21B	$36.05B	$7.634B
YoY Change	177.88%	-1479.23%	-41.53%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0000034088
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue
CY2020Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	1-2256
CY2021	dei	Entity Registrant Name EntityRegistrantName	Exxon Mobil Corporation
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	NJ
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	13-5409005
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	5959 Las Colinas Boulevard
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Irving
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	75039-2298
CY2021	dei	City Area Code CityAreaCode	972
CY2021	dei	Local Phone Number LocalPhoneNumber	940-6000
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Public Float EntityPublicFloat	267000000000	USD
CY2022Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	4233592429	shares
CY2021	dei	Auditor Firm AuditorFirmId	238
CY2021	dei	Auditor Name AuditorName	PricewaterhouseCoopers LLP
CY2021	dei	Auditor Location AuditorLocation	Dallas, Texas
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	276692000000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	178574000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	255583000000	USD
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CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1732000000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	5441000000	USD
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CY2021	us-gaap	Revenues Revenues	285640000000	USD
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CY2021	xom	Crude Oil And Product Purchases CrudeOilAndProductPurchases	155164000000	USD
CY2020	xom	Crude Oil And Product Purchases CrudeOilAndProductPurchases	94007000000	USD
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CY2021	xom	Production And Manufacturing Expenses ProductionAndManufacturingExpenses	36035000000	USD
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CY2020Q4	us-gaap	Liabilities Liabilities	168620000000	USD
CY2021Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
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CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	109000000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	719000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	304000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	262000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	169000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-1401000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-35000000	USD
CY2021Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.002
CY2019	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	638000000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	5341000000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	2428000000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	7018000000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	819000000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	786000000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	560000000	USD
CY2021	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	655000000	USD
CY2020	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	665000000	USD
CY2019	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	731000000	USD
CY2021	us-gaap	Interest Paid InterestPaid	1474000000	USD
CY2020	us-gaap	Interest Paid InterestPaid	1451000000	USD
CY2019	us-gaap	Interest Paid InterestPaid	1291000000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	159000000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	96000000	USD
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	26883000000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	16339000000	USD
CY2021Q4	us-gaap	Allowance For Notes And Loans Receivable Current AllowanceForNotesAndLoansReceivableCurrent	381000000	USD
CY2020Q4	us-gaap	Allowance For Notes And Loans Receivable Current AllowanceForNotesAndLoansReceivableCurrent	378000000	USD
CY2021Q4	us-gaap	Notes And Loans Receivable Net Current NotesAndLoansReceivableNetCurrent	5500000000	USD
CY2020Q4	us-gaap	Notes And Loans Receivable Net Current NotesAndLoansReceivableNetCurrent	4242000000	USD
CY2021Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	32383000000	USD
CY2020Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	20581000000	USD
CY2021Q4	us-gaap	Short Term Bank Loans And Notes Payable ShortTermBankLoansAndNotesPayable	276000000	USD
CY2020Q4	us-gaap	Short Term Bank Loans And Notes Payable ShortTermBankLoansAndNotesPayable	222000000	USD
CY2021Q4	us-gaap	Commercial Paper CommercialPaper	1608000000	USD
CY2020Q4	us-gaap	Commercial Paper CommercialPaper	17306000000	USD
CY2021Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	2392000000	USD
CY2020Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	2930000000	USD
CY2021Q4	us-gaap	Debt Current DebtCurrent	4276000000	USD
CY2020Q4	us-gaap	Debt Current DebtCurrent	20458000000	USD
CY2021Q4	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	26623000000	USD
CY2020Q4	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	17499000000	USD
CY2021Q4	xom	Payables To Equity Companies PayablesToEquityCompanies	8885000000	USD
CY2020Q4	xom	Payables To Equity Companies PayablesToEquityCompanies	6476000000	USD
CY2021Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	3896000000	USD
CY2020Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	3408000000	USD
CY2021Q4	us-gaap	Accounts Payable Other Current AccountsPayableOtherCurrent	11362000000	USD
CY2020Q4	us-gaap	Accounts Payable Other Current AccountsPayableOtherCurrent	7838000000	USD
CY2021Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	50766000000	USD
CY2020Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	35221000000	USD
CY2019	xom	Share Of Equity Company Sales Revenues From Consolidated Companies ShareOfEquityCompanySalesRevenuesFromConsolidatedCompanies	0.13
CY2020Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.002
CY2021	xom	Share Of Equity Company Sales Revenues From Consolidated Companies ShareOfEquityCompanySalesRevenuesFromConsolidatedCompanies	0.10
CY2020	xom	Share Of Equity Company Sales Revenues From Consolidated Companies ShareOfEquityCompanySalesRevenuesFromConsolidatedCompanies	0.11
CY2021Q4	us-gaap	Equity Method Investments EquityMethodInvestments	31225000000	USD
CY2020Q4	xom	Advances To Affiliate Allowance AdvancesToAffiliateAllowance	31000000	USD
CY2021Q4	us-gaap	Advances To Affiliate AdvancesToAffiliate	8326000000	USD
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	29772000000	USD
CY2021Q4	xom	Advances To Affiliate Allowance AdvancesToAffiliateAllowance	34000000	USD
CY2020Q4	us-gaap	Advances To Affiliate AdvancesToAffiliate	8812000000	USD
CY2021Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	39551000000	USD
CY2020Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	38584000000	USD
CY2021Q4	us-gaap	Long Term Investments LongTermInvestments	138000000	USD
CY2020Q4	us-gaap	Long Term Investments LongTermInvestments	143000000	USD
CY2021Q4	xom	Reserves For Long Term Receivables And Miscellaneous Investments ReservesForLongTermReceivablesAndMiscellaneousInvestments	5974000000	USD
CY2020Q4	xom	Reserves For Long Term Receivables And Miscellaneous Investments ReservesForLongTermReceivablesAndMiscellaneousInvestments	6115000000	USD
CY2021Q4	us-gaap	Long Term Accounts Notes And Loans Receivable Net Noncurrent LongTermAccountsNotesAndLoansReceivableNetNoncurrent	5506000000	USD
CY2020Q4	us-gaap	Long Term Accounts Notes And Loans Receivable Net Noncurrent LongTermAccountsNotesAndLoansReceivableNetNoncurrent	4788000000	USD
CY2021Q4	us-gaap	Long Term Investments And Receivables Net LongTermInvestmentsAndReceivablesNet	45195000000	USD
CY2020Q4	us-gaap	Long Term Investments And Receivables Net LongTermInvestmentsAndReceivablesNet	43515000000	USD
CY2020	us-gaap	Asset Retirement Obligation Foreign Currency Translation Gain Loss AssetRetirementObligationForeignCurrencyTranslationGainLoss	239000000	USD
CY2019	us-gaap	Asset Retirement Obligation Foreign Currency Translation Gain Loss AssetRetirementObligationForeignCurrencyTranslationGainLoss	84000000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	495062000000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	216552000000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	505322000000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	227553000000	USD
CY2021	us-gaap	Asset Impairment Charges AssetImpairmentCharges	1200000000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	100000000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	278510000000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	277769000000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	12103000000	USD
CY2021	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	548000000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	11247000000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	11280000000	USD
CY2020	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	584000000	USD
CY2019	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	649000000	USD
CY2021	xom	Asset Retirement Obligation Reduction Due To Property Sales AssetRetirementObligationReductionDueToPropertySales	1002000000	USD
CY2020	xom	Asset Retirement Obligation Reduction Due To Property Sales AssetRetirementObligationReductionDueToPropertySales	77000000	USD
CY2019	xom	Asset Retirement Obligation Reduction Due To Property Sales AssetRetirementObligationReductionDueToPropertySales	1085000000	USD
CY2021	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	444000000	USD
CY2020	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	669000000	USD
CY2019	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	827000000	USD
CY2021	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	42000000	USD
CY2020	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	26000000	USD
CY2019	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	89000000	USD
CY2021	us-gaap	Asset Retirement Obligation Foreign Currency Translation Gain Loss AssetRetirementObligationForeignCurrencyTranslationGainLoss	-147000000	USD
CY2021	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	386000000	USD
CY2020	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	-136000000	USD
CY2019	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	267000000	USD
CY2021Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	10630000000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	11247000000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	11280000000	USD
CY2021Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	9985000000	USD
CY2020Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	10558000000	USD
CY2021	xom	Asset Retirement Obligations Cash Paid To Settle Expected Payment Year One AssetRetirementObligationsCashPaidToSettleExpectedPaymentYearOne	645000000	USD
CY2021	xom	Asset Retirement Obligations Cash Paid To Settle Expected Payment Year Two AssetRetirementObligationsCashPaidToSettleExpectedPaymentYearTwo	648000000	USD
CY2020Q4	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	4382000000	USD
CY2019Q4	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	4613000000	USD
CY2018Q4	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	4160000000	USD
CY2021Q4	xom	Number Of Projects That Only Have Exploratory Well Costs Capitalized For Period Of One Year Or Less NumberOfProjectsThatOnlyHaveExploratoryWellCostsCapitalizedForPeriodOfOneYearOrLess	4	Projects
CY2020	us-gaap	Capitalized Exploratory Well Cost Charged To Expense1 CapitalizedExploratoryWellCostChargedToExpense1	318000000	USD
CY2021	us-gaap	Capitalized Exploratory Well Cost Additions Pending Determination Of Proved Reserves CapitalizedExploratoryWellCostAdditionsPendingDeterminationOfProvedReserves	420000000	USD
CY2020	us-gaap	Capitalized Exploratory Well Cost Additions Pending Determination Of Proved Reserves CapitalizedExploratoryWellCostAdditionsPendingDeterminationOfProvedReserves	208000000	USD
CY2019	us-gaap	Capitalized Exploratory Well Cost Additions Pending Determination Of Proved Reserves CapitalizedExploratoryWellCostAdditionsPendingDeterminationOfProvedReserves	532000000	USD
CY2021	us-gaap	Capitalized Exploratory Well Cost Charged To Expense1 CapitalizedExploratoryWellCostChargedToExpense1	325000000	USD
CY2019	us-gaap	Capitalized Exploratory Well Cost Charged To Expense1 CapitalizedExploratoryWellCostChargedToExpense1	46000000	USD
CY2021	us-gaap	Reclassification To Well Facilities And Equipment Based On Determination Of Proved Reserves ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReserves	328000000	USD
CY2020	us-gaap	Reclassification To Well Facilities And Equipment Based On Determination Of Proved Reserves ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReserves	174000000	USD
CY2019	us-gaap	Reclassification To Well Facilities And Equipment Based On Determination Of Proved Reserves ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReserves	37000000	USD
CY2021	xom	Other Capitalized Exploratory Well Costs OtherCapitalizedExploratoryWellCosts	-29000000	USD
CY2020	xom	Other Capitalized Exploratory Well Costs OtherCapitalizedExploratoryWellCosts	53000000	USD
CY2019	xom	Other Capitalized Exploratory Well Costs OtherCapitalizedExploratoryWellCosts	4000000	USD
CY2021Q4	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	4120000000	USD
CY2020Q4	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	4382000000	USD
CY2019Q4	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	4613000000	USD
CY2021Q4	xom	Capitalized Exploratory Well Costs Attributable To Equity Companies CapitalizedExploratoryWellCostsAttributableToEquityCompanies	306000000	USD
CY2020Q4	xom	Capitalized Exploratory Well Costs Attributable To Equity Companies CapitalizedExploratoryWellCostsAttributableToEquityCompanies	306000000	USD
CY2019Q4	xom	Capitalized Exploratory Well Costs Attributable To Equity Companies CapitalizedExploratoryWellCostsAttributableToEquityCompanies	306000000	USD
CY2021Q4	us-gaap	Capitalized Exploratory Well Costs That Have Been Capitalized For Period Of One Year Or Less CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodOfOneYearOrLess	420000000	USD
CY2020Q4	us-gaap	Capitalized Exploratory Well Costs That Have Been Capitalized For Period Of One Year Or Less CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodOfOneYearOrLess	208000000	USD
CY2019Q4	us-gaap	Capitalized Exploratory Well Costs That Have Been Capitalized For Period Of One Year Or Less CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodOfOneYearOrLess	532000000	USD
CY2021Q4	us-gaap	Capitalized Exploratory Well Costs That Have Been Capitalized For Period Greater Than One Year CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear	3700000000	USD
CY2020Q4	us-gaap	Capitalized Exploratory Well Costs That Have Been Capitalized For Period Greater Than One Year CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear	4174000000	USD
CY2019Q4	us-gaap	Capitalized Exploratory Well Costs That Have Been Capitalized For Period Greater Than One Year CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear	4081000000	USD
CY2021Q4	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	4120000000	USD
CY2020Q4	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	4382000000	USD
CY2019Q4	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	4613000000	USD
CY2020Q4	xom	Number Of Projects That Only Have Exploratory Well Costs Capitalized For Period Of One Year Or Less NumberOfProjectsThatOnlyHaveExploratoryWellCostsCapitalizedForPeriodOfOneYearOrLess	3	Projects
CY2019Q4	xom	Number Of Projects That Only Have Exploratory Well Costs Capitalized For Period Of One Year Or Less NumberOfProjectsThatOnlyHaveExploratoryWellCostsCapitalizedForPeriodOfOneYearOrLess	4	Projects
CY2021Q4	us-gaap	Projects That Have Exploratory Well Costs That Have Been Capitalized For Period Greater Than One Year ProjectsThatHaveExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear	30	Projects
CY2020Q4	us-gaap	Projects That Have Exploratory Well Costs That Have Been Capitalized For Period Greater Than One Year ProjectsThatHaveExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear	34	Projects
CY2019Q4	us-gaap	Projects That Have Exploratory Well Costs That Have Been Capitalized For Period Greater Than One Year ProjectsThatHaveExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear	46	Projects
CY2021Q4	xom	Total Number Of Projects TotalNumberOfProjects	34	Projects
CY2020Q4	xom	Total Number Of Projects TotalNumberOfProjects	37	Projects
CY2019Q4	xom	Total Number Of Projects TotalNumberOfProjects	50	Projects
CY2021Q4	us-gaap	Projects That Have Exploratory Well Costs That Have Been Capitalized For Period Greater Than One Year ProjectsThatHaveExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear	30	Projects
CY2021Q4	xom	Number Of Projects With Capitalized Well Drilled In Preceding Twelve Months Or Exploration Planned In Next Two Years As Of Year End NumberOfProjectsWithCapitalizedWellDrilledInPrecedingTwelveMonthsOrExplorationPlannedInNextTwoYearsAsOfYearEnd	13	Projects
CY2021Q4	xom	Number Of Projects With Capitalized Well Exploration Completed As Of Year End Progressing Toward Development NumberOfProjectsWithCapitalizedWellExplorationCompletedAsOfYearEndProgressingTowardDevelopment	17	Projects
CY2021Q4	xom	Number Of Projects With Capitalized Well Exploration Completed As Of Year End Progressing Toward Development NumberOfProjectsWithCapitalizedWellExplorationCompletedAsOfYearEndProgressingTowardDevelopment	17	Projects
CY2021	xom	Lessee Lease Lease Not Yet Commenced Expected Payment Year One LesseeLeaseLeaseNotYetCommencedExpectedPaymentYearOne	310000000	USD
CY2021	xom	Lessee Lease Lease Not Yet Commenced Expected Payment Year Two LesseeLeaseLeaseNotYetCommencedExpectedPaymentYearTwo	415000000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	23040000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-22440000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	14340000000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	4275000000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	4271000000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	4270000000	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.39
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-5.25
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.36
CY2021	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	3.49
CY2020	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	3.48
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	3.43
CY2021Q4	xom	Accounts Receivable Exchange Collateral AccountsReceivableExchangeCollateral	641000000	USD
CY2020Q4	xom	Accounts Receivable Exchange Collateral AccountsReceivableExchangeCollateral	504000000	USD
CY2021Q4	xom	Long Term Debt In Us Dollars LongTermDebtInUsDollars	37611000000	USD
CY2021Q4	xom	Us Dollar Equivalent At Year End Exchange Rates Of Amounts Payable In Foreign Currencies UsDollarEquivalentAtYearEndExchangeRatesOfAmountsPayableInForeignCurrencies	5817000000	USD
CY2021Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	2392000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	4039000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	3836000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	4597000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	3575000000	USD
CY2021	us-gaap	Derivatives Methods Of Accounting Hedging Derivatives DerivativesMethodsOfAccountingHedgingDerivatives	The Corporation may use non-derivative financial instruments, such as its foreign currency-denominated debt, as hedges of its net investments in certain foreign subsidiaries. Under this method, the change in the carrying value of the financial instruments due to foreign exchange fluctuations is reported in accumulated other comprehensive income.
CY2021	us-gaap	Proceeds From Hedge Financing Activities ProceedsFromHedgeFinancingActivities	5100000000	USD
CY2021Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	114000000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	131000000	USD
CY2021Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	43428000000	USD
CY2020Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	47182000000	USD
CY2021	xom	Minimum Ownership Of Affiliate Needed For Awards MinimumOwnershipOfAffiliateNeededForAwards	0.50
CY2021	xom	Share Based Compensation Arrangement By Share Based Payment Award Minimum Percentage Of Market Value At Date Of Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardMinimumPercentageOfMarketValueAtDateOfGrant	1
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	P10Y
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	220000000	shares
CY2021Q4	xom	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized Remaining ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedRemaining	66000000	shares
CY2020Q4	xom	Issued And Outstanding Restricted Stock IssuedAndOutstandingRestrictedStock	39585000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	80.43
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	66.54
CY2021	xom	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Prior Year Awards Issued Granted In Current Year ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodPriorYearAwardsIssuedGrantedInCurrentYear	8753000	shares
CY2021	xom	Weighted Average Fair Value Of Restricted Stock And Restricted Stock Units At Grant Date WeightedAverageFairValueOfRestrictedStockAndRestrictedStockUnitsAtGrantDate	41.29
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	9142000	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	86.16
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	274000	shares
CY2021Q4	xom	Issued And Outstanding Restricted Stock IssuedAndOutstandingRestrictedStock	38922000	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	70.38
CY2021Q4	us-gaap	Guarantee Obligations Current Carrying Value GuaranteeObligationsCurrentCarryingValue	8522000000	USD
CY2020	us-gaap	Interest Expense InterestExpense	1158000000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-5632000000	USD
CY2021	us-gaap	Defined Benefit Plan Benefit Obligation Prescription Drug Subsidy Receipt DefinedBenefitPlanBenefitObligationPrescriptionDrugSubsidyReceipt	9000000	USD
CY2020	us-gaap	Defined Benefit Plan Benefit Obligation Prescription Drug Subsidy Receipt DefinedBenefitPlanBenefitObligationPrescriptionDrugSubsidyReceipt	16000000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.04
CY2021	us-gaap	Defined Benefit Plan Year Health Care Cost Trend Rate Reaches Ultimate Trend Rate DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate	2023
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	177000000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	358000000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	422000000	USD
CY2020	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	17342000000	USD
CY2021	us-gaap	Defined Benefit Plan Amounts Recognized In Other Comprehensive Income Loss Net Gain Loss Before Tax DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossNetGainLossBeforeTax	5220000000	USD
CY2020	us-gaap	Defined Benefit Plan Amounts Recognized In Other Comprehensive Income Loss Net Gain Loss Before Tax DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossNetGainLossBeforeTax	1189000000	USD
CY2019	us-gaap	Defined Benefit Plan Amounts Recognized In Other Comprehensive Income Loss Net Gain Loss Before Tax DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossNetGainLossBeforeTax	-2041000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	1287000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	153000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-550000000	USD
CY2021	xom	Other Comprehensive Income Loss Charge Credit To Investment In Equity Companies OtherComprehensiveIncomeLossChargeCreditToInvestmentInEquityCompanies	-110000000	USD
CY2020	xom	Other Comprehensive Income Loss Charge Credit To Investment In Equity Companies OtherComprehensiveIncomeLossChargeCreditToInvestmentInEquityCompanies	110000000	USD
CY2019	xom	Other Comprehensive Income Loss Charge Credit To Investment In Equity Companies OtherComprehensiveIncomeLossChargeCreditToInvestmentInEquityCompanies	19000000	USD
CY2021	xom	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Including Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-4043000000	USD
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CY2019	xom	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Including Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1510000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5282000000	USD
CY2021	xom	Other Comprehensive Income Loss Charge Credit To Equity Of Noncontrolling Interests OtherComprehensiveIncomeLossChargeCreditToEquityOfNoncontrollingInterests	217000000	USD
CY2020	xom	Other Comprehensive Income Loss Charge Credit To Equity Of Noncontrolling Interests OtherComprehensiveIncomeLossChargeCreditToEquityOfNoncontrollingInterests	-30000000	USD
CY2019	xom	Other Comprehensive Income Loss Charge Credit To Equity Of Noncontrolling Interests OtherComprehensiveIncomeLossChargeCreditToEquityOfNoncontrollingInterests	-146000000	USD
CY2021	us-gaap	Interest Expense Other InterestExpenseOther	103000000	USD
CY2020	us-gaap	Interest Expense Other InterestExpenseOther	148000000	USD
CY2019	us-gaap	Interest Expense Other InterestExpenseOther	105000000	USD
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	29772000000	USD
CY2020Q4	us-gaap	Assets Assets	332750000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	14340000000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	5441000000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	23040000000	USD
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	6657000000	USD
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	276692000000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	20607000000	USD
CY2021	us-gaap	Investment Income Interest InvestmentIncomeInterest	33000000	USD
CY2021	us-gaap	Interest Expense InterestExpense	947000000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7636000000	USD
CY2021	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	12541000000	USD
CY2021Q4	us-gaap	Equity Method Investments EquityMethodInvestments	31225000000	USD
CY2021Q4	us-gaap	Assets Assets	338923000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-22440000000	USD
CY2020	xom	Asset Impairment Charges Net Of Tax AssetImpairmentChargesNetOfTax	20253000000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1732000000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	178574000000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	46009000000	USD
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	49000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	255583000000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	18998000000	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	84000000	USD
CY2019	us-gaap	Interest Expense InterestExpense	830000000	USD
CY2019	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	24904000000	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	29291000000	USD
CY2019Q4	us-gaap	Assets Assets	362597000000	USD
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	276692000000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	178574000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	255583000000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	216552000000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	227553000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	253018000000	USD
CY2021	xom	Worldwide Current Tax Expense Benefit WorldwideCurrentTaxExpenseBenefit	7184000000	USD
CY2020	xom	Worldwide Current Tax Expense Benefit WorldwideCurrentTaxExpenseBenefit	3170000000	USD
CY2019	xom	Worldwide Current Tax Expense Benefit WorldwideCurrentTaxExpenseBenefit	6050000000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-44000000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-8052000000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-675000000	USD
CY2021	xom	Federal Income Tax Expense Benefit On Foreign Operations FederalIncomeTaxExpenseBenefitOnForeignOperations	26000000	USD
CY2020	xom	Federal Income Tax Expense Benefit On Foreign Operations FederalIncomeTaxExpenseBenefitOnForeignOperations	13000000	USD
CY2019	xom	Federal Income Tax Expense Benefit On Foreign Operations FederalIncomeTaxExpenseBenefitOnForeignOperations	89000000	USD
CY2021	xom	Total Federal And Non Us Tax Expense Benefit TotalFederalAndNonUsTaxExpenseBenefit	7166000000	USD
CY2020	xom	Total Federal And Non Us Tax Expense Benefit TotalFederalAndNonUsTaxExpenseBenefit	-4869000000	USD
CY2019	xom	Total Federal And Non Us Tax Expense Benefit TotalFederalAndNonUsTaxExpenseBenefit	5464000000	USD
CY2021	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	470000000	USD
CY2020	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	-763000000	USD
CY2019	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	-182000000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7636000000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-5632000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5282000000	USD
CY2021	us-gaap	Taxes Other TaxesOther	30239000000	USD
CY2020	us-gaap	Taxes Other TaxesOther	26122000000	USD
CY2019	us-gaap	Taxes Other TaxesOther	30525000000	USD
CY2021	xom	Taxes Included In Production And Manufacturing Expenses TaxesIncludedInProductionAndManufacturingExpenses	2263000000	USD
CY2021	xom	Total Income Sales Based And Other Taxes TotalIncomeSalesBasedAndOtherTaxes	40591000000	USD
CY2020	xom	Taxes Included In Production And Manufacturing Expenses TaxesIncludedInProductionAndManufacturingExpenses	1811000000	USD
CY2019	xom	Taxes Included In Production And Manufacturing Expenses TaxesIncludedInProductionAndManufacturingExpenses	2196000000	USD
CY2021	xom	Taxes Included In Selling General And Administrative Expenses TaxesIncludedInSellingGeneralAndAdministrativeExpenses	453000000	USD
CY2020	xom	Taxes Included In Selling General And Administrative Expenses TaxesIncludedInSellingGeneralAndAdministrativeExpenses	492000000	USD
CY2019	xom	Taxes Included In Selling General And Administrative Expenses TaxesIncludedInSellingGeneralAndAdministrativeExpenses	465000000	USD
CY2021	xom	Total Other Taxes And Duties TotalOtherTaxesAndDuties	32955000000	USD
CY2020	xom	Total Other Taxes And Duties TotalOtherTaxesAndDuties	28425000000	USD
CY2019	xom	Total Other Taxes And Duties TotalOtherTaxesAndDuties	33186000000	USD
CY2020	xom	Total Income Sales Based And Other Taxes TotalIncomeSalesBasedAndOtherTaxes	22793000000	USD
CY2019	xom	Total Income Sales Based And Other Taxes TotalIncomeSalesBasedAndOtherTaxes	38468000000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	9478000000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-27704000000	USD
CY2020	xom	Total Consolidated Company And Share Of Equity Company Income Taxes TotalConsolidatedCompanyAndShareOfEquityCompanyIncomeTaxes	-4771000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-53000000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	21756000000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-1179000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	20109000000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	31234000000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-28883000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	20056000000	USD
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	6559000000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-6065000000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	4212000000	USD
CY2021	us-gaap	Income Tax Reconciliation Equity In Earnings Losses Of Unconsolidated Subsidiary IncomeTaxReconciliationEquityInEarningsLossesOfUnconsolidatedSubsidiary	1398000000	USD
CY2020	us-gaap	Income Tax Reconciliation Equity In Earnings Losses Of Unconsolidated Subsidiary IncomeTaxReconciliationEquityInEarningsLossesOfUnconsolidatedSubsidiary	364000000	USD
CY2019	us-gaap	Income Tax Reconciliation Equity In Earnings Losses Of Unconsolidated Subsidiary IncomeTaxReconciliationEquityInEarningsLossesOfUnconsolidatedSubsidiary	1143000000	USD
CY2021	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	2809000000	USD
CY2020	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	1606000000	USD
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	2573000000	USD
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	371000000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-603000000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-144000000	USD
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-705000000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-206000000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-216000000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7636000000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-5632000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5282000000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7636000000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-5632000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5282000000	USD
CY2021	xom	Share Of Equity Company Income Taxes ShareOfEquityCompanyIncomeTaxes	2756000000	USD
CY2020	xom	Share Of Equity Company Income Taxes ShareOfEquityCompanyIncomeTaxes	861000000	USD
CY2019	xom	Share Of Equity Company Income Taxes ShareOfEquityCompanyIncomeTaxes	2490000000	USD
CY2021	xom	Total Consolidated Company And Share Of Equity Company Income Taxes TotalConsolidatedCompanyAndShareOfEquityCompanyIncomeTaxes	10392000000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	6427000000	USD
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.31
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.17
CY2019	xom	Total Consolidated Company And Share Of Equity Company Income Taxes TotalConsolidatedCompanyAndShareOfEquityCompanyIncomeTaxes	7772000000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	23598000000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-23251000000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	14774000000	USD
CY2021	xom	Results Of Operations Income Before Consolidate And Equity Company Income Taxes ResultsOfOperationsIncomeBeforeConsolidateAndEquityCompanyIncomeTaxes	33990000000	USD
CY2020	xom	Results Of Operations Income Before Consolidate And Equity Company Income Taxes ResultsOfOperationsIncomeBeforeConsolidateAndEquityCompanyIncomeTaxes	-28022000000	USD
CY2019	xom	Results Of Operations Income Before Consolidate And Equity Company Income Taxes ResultsOfOperationsIncomeBeforeConsolidateAndEquityCompanyIncomeTaxes	22546000000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.34
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	27888000000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	28778000000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	6353000000	USD
CY2021	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-97000000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	34241000000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	35205000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	3687000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	4703000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	2865000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	3150000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	6914000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	8982000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	7694000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	7095000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	21160000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	23930000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2634000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2731000000	USD
CY2021Q4	us-gaap	Deferred Tax And Other Liabilities Noncurrent DeferredTaxAndOtherLiabilitiesNoncurrent	15715000000	USD
CY2020Q4	us-gaap	Deferred Tax And Other Liabilities Noncurrent DeferredTaxAndOtherLiabilitiesNoncurrent	14006000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2634000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	9174000000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	358000000	USD
CY2021Q4	xom	Deferred Tax Asset Included In Other Assets Including Intangibles Net DeferredTaxAssetIncludedInOtherAssetsIncludingIntangiblesNet	4450000000	USD
CY2020Q4	xom	Deferred Tax Asset Included In Other Assets Including Intangibles Net DeferredTaxAssetIncludedInOtherAssetsIncludingIntangiblesNet	4159000000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	20165000000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	18165000000	USD
CY2021Q4	us-gaap	Deferred Tax And Other Liabilities Noncurrent DeferredTaxAndOtherLiabilitiesNoncurrent	15715000000	USD
CY2020Q4	us-gaap	Deferred Tax And Other Liabilities Noncurrent DeferredTaxAndOtherLiabilitiesNoncurrent	14006000000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	8764000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	8844000000	USD
CY2019	xom	Unrecognized Tax Benefits Foreign Exchange Effects Other UnrecognizedTaxBenefitsForeignExchangeEffectsOther	-177000000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	9130000000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	253000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	287000000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	100000000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	218000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	120000000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	79000000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	201000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	97000000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	2000000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	237000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	279000000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	11000000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	113000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	538000000	USD
CY2021	xom	Unrecognized Tax Benefits Foreign Exchange Effects Other UnrecognizedTaxBenefitsForeignExchangeEffectsOther	0	USD
CY2020	xom	Unrecognized Tax Benefits Foreign Exchange Effects Other UnrecognizedTaxBenefitsForeignExchangeEffectsOther	0	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	8764000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	8844000000	USD
CY2021	xom	Percentage Increase In Unrecognized Tax Benefits PercentageIncreaseInUnrecognizedTaxBenefits	0.10
CY2021	xom	Percentage Decrease In Unrecognized Tax Benefits PercentageDecreaseInUnrecognizedTaxBenefits	0.70
CY2019	us-gaap	Income Tax Examination Interest Expense IncomeTaxExaminationInterestExpense	0	USD
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CY2020	us-gaap	Income Tax Examination Interest Expense IncomeTaxExaminationInterestExpense	-6000000	USD
CY2021Q4	us-gaap	Income Tax Examination Interest Accrued IncomeTaxExaminationInterestAccrued	61000000	USD
CY2020Q4	us-gaap	Income Tax Examination Interest Accrued IncomeTaxExaminationInterestAccrued	61000000	USD

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$XOM
EXXON MOBIL CORP Stock $xom

2021 Q4 Form 10-K Financial Statement

#000003408822000011 Filed on February 23, 2022

Income Statement

Balance Sheet

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$XOM EXXON MOBIL CORP Stock $xom

2021 Q4 Form 10-K Financial Statement

#000003408822000011 Filed on February 23, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$XOM
EXXON MOBIL CORP Stock $xom