Commodity contracts Commodity Contract [Member] Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Accrued liabilities Business Combination, Recognized Liability Assumed, Liability, Current Netting arrangement, other assets Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash, Offset Against Derivative Asset Award Timing Predetermined Award Timing Predetermined [Flag] Entity File Number Entity File Number Additional paid-in capital Additional Paid-in Capital [Member] Revenue from the U.S. government U S Government Contracts [Member] U.S. Government contracts [Member] Tabular List, Table Tabular List [Table Text Block] Other comprehensive income (loss), tax Other Comprehensive Income (Loss), Tax Aircraft [Domain] Aircraft Type [Domain] Aircraft [Domain] Fair Values and Related Carrying Values of Financial Instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Business combination, consideration transferred, liabilities incurred Business Combination, Consideration Transferred, Liabilities Incurred Schedule of Change in Accounting Estimate Schedule of Change in Accounting Estimate [Table Text Block] Maximum Potential Payments Guarantor Obligations, Maximum Exposure, Undiscounted 2028 Other Commitment, to be Paid, Year Two Adjustment to Compensation: Adjustment to Compensation [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Stock, Class of Stock [Table] Stock, Class of Stock [Table] Netting arrangement, accrued liabilities Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset Participating securities (in shares) Participating securities (in shares) Incremental Common Shares Attributable to Participating Nonvested Shares with Non-forfeitable Dividend Rights Adjustment to Compensation, Amount Adjustment to Compensation Amount Pension Pension FAS/CAS service cost adjustment Pension Plan [Member] Share-based plans expense Share-based plans Share-Based Payment Arrangement, Noncash Expense Stock options Share-Based Payment Arrangement, Option [Member] Notes receivable, net, carrying amount Financing Receivable, after Allowance for Credit Loss Antidilutive Securities Excluded from Computation of Earnings Per Share, by Antidilutive Securities [Axis] Antidilutive Securities [Axis] Investment/asset impairment charges, net Total Losses Asset Impairment Charges Total shareholders' equity Equity, Attributable to Parent Unrealized (loss)/gain arising during period, tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax Fair Value by Measurement Frequency [Axis] Measurement Frequency [Axis] Other comprehensive income, net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Insider Trading Policies and Procedures [Line Items] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Lockheed Martin Corporation (Lockheed) Lockheed Martin Corporation (Lockheed) [Member] Lockheed Martin Corporation (Lockheed) Antidilutive or Performance Condition not met Antidilutive or Performance Condition not met [Member] Antidilutive or Performance Condition not met Fair Value, Recurring Fair Value, Recurring [Member] Liabilities and equity Liabilities and Equity [Abstract] Cover [Abstract] Conversion of Stock, Name [Domain] Conversion of Stock, Name [Domain] Maximum Maximum [Member] Less: Net (loss)/earnings attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Net actuarial gain arising during the period, tax Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Gain/(loss) on dispositions, net (Gain)/loss on dispositions, net Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Money market funds Investment Owned, Fair Value Retirement Benefits [Abstract] Retirement Benefits [Abstract] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Other assets Other Assets [Member] Number of simulator Number Of Simulator Number Of Simulator Within Next Fiscal Year Within Next Fiscal Year [Member] Within Next Fiscal Year Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Earnings before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Proceeds from disposals of property, plant and equipment Proceeds from Sale of Property, Plant, and Equipment Statement of Financial Position Location, Activity, Accrual [Axis] Statement of Financial Position Location, Activity, Accrual [Axis] New borrowings Proceeds from Issuance of Debt Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating Segments Operating Segments [Member] Unrealized (loss)/gain arising during period, net of tax of $6 and ($20) Recognized in Other comprehensive income/(loss), net of tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Less: Comprehensive (loss)/income related to noncontrolling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Within Next 4 Fiscal Years Within Next Four Fiscal Years [Member] Within Next Four Fiscal Years Program [Axis] Program [Axis] Program [Axis] Diluted weighted average shares outstanding (in shares) Weighted Average Number of Shares Issued, Diluted Number of diluted shares or units, before adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Document Fiscal Period Focus Document Fiscal Period Focus Reductions for payments made Standard and Extended Product Warranty Accrual, Decrease for Payments Award Timing Method Award Timing Method [Text Block] Award Type [Axis] Award Type [Axis] Currency Translation Adjustments Accumulated Foreign Currency Adjustment Attributable to Parent [Member] 2029 Present Value Of Estimated Revenue, From Expected Amortization, Year Four Present Value Of Estimated Revenue, From Expected Amortization, Year Four Other commitment, period Other Commitment, Period Other Commitment, Period Trading Symbol Trading Symbol Additions for current year deliveries Standard and Extended Product Warranty Accrual, Increase for Warranties Issued Commodity Contracts [Axis] Commodity Contracts [Axis] Commodity Contracts [Axis] Entity Address, City or Town Entity Address, City or Town Loss contingency, range of possible loss, portion not accrued Loss Contingency, Range of Possible Loss, Portion Not Accrued Scenario One Stock Conversion, Scenario One [Member] Stock Conversion, Scenario One Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Restricted stock units Restricted Stock Units (RSUs) [Member] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Business combination, consideration transferred Fair value of total consideration Business Combination, Consideration Transferred Allowances for Losses on Financial Assets Credit Loss, Financial Instrument [Text Block] Entity Emerging Growth Company Entity Emerging Growth Company Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] 2029 Other Commitment, to be Paid, Year Three Less restricted cash & cash equivalents, included in Investments Restricted cash & cash equivalents Restricted Cash and Cash Equivalent Accounts receivable, changes in estimates Accounts Receivable, Credit Loss Expense (Reversal) Changes in estimates Allowance for Credit Loss Expense, Reversal Amount of expense (reversal of expense) for expected credit loss Commitment Type [Domain] Commitment Type [Domain] Type of commitment [Domain] Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Unbilled receivables Business Combination, Recognized Asset Acquired, Unbilled Receivable, Current Business Combination, Recognized Asset Acquired, Unbilled Receivable, Current Deferred compensation Deferred Compensation Arrangement with Individual, Compensation Expense Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Carrying Amount of  Liabilities Guarantor Obligations, Current Carrying Value Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Reductions for payments made Payments Made To Customers Payments Made To Customers Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Income tax expense Income Tax Expense (Benefit) Antidilutive or Performance Condition not met [Domain] Antidilutive or Performance Condition not met [Domain] Antidilutive or Performance Condition not met [Domain] Preferred stock, shares, issued (in shares) Preferred Stock, Shares Issued Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Designated as Hedging Instrument Designated as Hedging Instrument [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] 2027 Present Value Of Estimated Revenue, From Expected Amortization, Year Two Present Value Of Estimated Revenue, From Expected Amortization, Year Two Total unrealized (loss)/gain on derivative instruments, net of tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Financing Receivables and Operating Lease Equipment [Table] Financing Receivables and Operating Lease Equipment [Table] Financing Receivables and Operating Lease Equipment Summary of Business Segment Data Summary Of Business Segment Data [Text Block] Summary Of Business Segment Data [Text Block] Other current assets Increase (Decrease) in Other Current Assets Fair Value of Trade in Value of Aircraft Probable Contractual Trade In Value [Member] Probable Contractual Trade In Value Schedule of Guarantee Obligations [Table] Guarantor Obligation [Table] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Income taxes receivable, payable and deferred Increase (Decrease) in Income Taxes Write-offs Allowance for Credit Loss, Writeoff Amount of direct write-downs charged against the allowance All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Accrued liabilities Accrued Liabilities, Current Less: Mandatory convertible preferred stock dividends accumulated during the period Preferred Stock Dividends, Income Statement Impact Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Net cash used by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Investments Long-Term Investments Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Other assets Business Combination, Recognized Asset Acquired, Other Asset, Current Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-Term Debt, Type [Axis] Long-Term Debt, Type [Axis] Basic Weighted Average Number of Shares Outstanding, Basic [Abstract] Number of low rate initial production lot Number Of Low Rate Initial Production Lot Number Of Low Rate Initial Production Lot Equity Components [Axis] Equity Components [Axis] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] 2027 Other Commitment, to be Paid, Year One Sales of products Product [Member] Contract with Customer, Basis of Pricing [Axis] Contract with Customer, Basis of Pricing [Axis] Number of reportable segments Number of Reportable Segments Supplier finance program, payment timing, period Supplier Finance Program, Payment Timing, Period Schedule of Contractual Obligation, Fiscal Year Maturity Contractual Obligation, Fiscal Year Maturity [Table Text Block] Entity Address, State or Province Entity Address, State or Province Accrued retiree health care Liability, Other Postretirement Defined Benefit Plan, Noncurrent Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] Total current liabilities Liabilities, Current Present Value of Estimated Revenue, from Expected Amortization Present Value Of Estimated Revenue, From Expected Amortization [Table Text Block] Present Value Of Estimated Revenue, From Expected Amortization Inventory [Axis] Inventory [Axis] Individual: Individual [Axis] Entities [Table] Entities [Table] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Entity Interactive Data Current Entity Interactive Data Current Senior Notes Due 2026 Senior Notes Due 2026 [Member] Senior Notes Due 2026 Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Antidilutive or Performance Condition not met [Axis] Antidilutive or Performance Condition not met [Axis] Antidilutive or Performance Condition not met Business Combination, Contingent Consideration, Type [Axis] Business Combination, Contingent Consideration, Type [Axis] 2030 Other Commitment, to be Paid, Year Four 2028 Present Value Of Estimated Revenue, From Expected Amortization, Year Three Present Value Of Estimated Revenue, From Expected Amortization, Year Three Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Commercial Commercial Customers [Member] Commercial Customers [Member] Number of aircraft Number Of Aircraft Number Of Aircraft Allowance for credit loss, beginning balance Allowance for credit loss, ending balance Allowance for Credit Loss Amount of allowance for credit loss Schedule of 737 Max Customer Concessions and Other Considerations Liability Schedule Of 737 Max Customer Concessions And Other Considerations Liability [Table Text Block] Schedule Of 737 Max Customer Concessions And Other Considerations Liability Other assets, net of accumulated amortization of $1,076 and $1,014 Other Assets, Noncurrent Customer [Domain] Customer [Domain] Number of commercial aircraft Number Of Commercial Aircraft Number Of Commercial Aircraft Entity Central Index Key Entity Central Index Key PEO Name PEO Name Liability Type [Domain] Liability Type [Domain] [Domain] for Liability Type [Axis] Total revenues Revenues Stock Conversion Description [Axis] Stock Conversion Description [Axis] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Foreign Exchange Contracts [Axis] Foreign Exchange Contracts [Axis] Foreign Exchange Contracts Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plan [Table] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Advances and progress billings Contract with Customer, Liability, Current Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Long-term contracts in progress Inventory for Long-Term Contracts or Programs, Gross Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Class of Stock [Domain] Class of Stock [Domain] Inventory, Current [Table] Inventory, Current [Table] KC-46A Tanker KC-46A Tanker [Member] KC-46A Tanker [Member] Changes in estimates Accrual for Environmental Loss Contingencies, Revision in Estimates Statement of Financial Position Location, Balance [Axis] Statement of Financial Position Location, Balance [Axis] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Entity Address, Address Line One Entity Address, Address Line One Research and development expense, net Research and development expense, net Research and development expense, net Research and Development Expense Accumulated other comprehensive loss AOCI Attributable to Parent [Member] Investments [Domain] Investments [Domain] Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Inventory, work in process Inventory, Work in Process, Gross FAS/CAS service cost adjustment FAS/CAS Service Cost Adjustment The FAS/CAS Service Cost Adjustment represents the difference between pension and postretirement service costs calculated under GAAP and costs allocated to the business segments which are based on US Government Cost Accounting Standards for our defense business Derivative Financial Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Amortization of prior service credits Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Fair Value as of Grant Date Award Grant Date Fair Value Reclassification adjustment for (gain)/loss included in net loss, tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax Commitment Type [Axis] Commitment Type [Axis] Type of commitment Loss contingency, settlement agreement, additional compensation fund Loss Contingency, Settlement Agreement, Additional Compensation Fund Loss Contingency, Settlement Agreement, Additional Compensation Fund Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Contributions to investments Payments to acquire investments Payments to Acquire Investments Document Quarterly Report Document Quarterly Report Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Commercial Aircraft Commitments [Axis] Commercial Aircraft Commitments [Axis] Commercial aircraft commitments by probability that trade-in will be exercised. Counterparty Name [Domain] Counterparty Name [Domain] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Arrangements with Off-Balance Sheet Risk Guarantees [Text Block] Stockholders' equity note, stock split, conversion ratio Stockholders' Equity Note, Stock Split, Conversion Ratio Other Income Other Income [Member] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Investment Type [Axis] Investment Type [Axis] Eliminations and other unallocated items, including earnings charges Eliminations And Other Unallocated Items, Including Earnings Charges Eliminations And Other Unallocated Items, Including Earnings Charges Operating lease equipment Operating Lease Equipment And Assets Held For Sale Or Re-Lease [Member] Operating lease equipment assets held for sale or re-lease Total Investments Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Interest and debt expense Interest and Debt Expense Equity instrument, convertible, threshold consecutive trading days Equity Instrument, Convertible, Threshold Consecutive Trading Days Equity Instrument, Convertible, Threshold Consecutive Trading Days Non-PEO NEO Non-PEO NEO [Member] Contingent liabilities on outstanding letters of credit agreements and surety bonds Letters of Credit Outstanding, Amount 2030 Present Value Of Estimated Revenue, From Expected Amortization, Year Five Present Value Of Estimated Revenue, From Expected Amortization, Year Five Preferred stock, dividend rate, percentage Preferred Stock, Dividend Rate, Percentage Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Basis of Presentation [Table] Basis of Presentation Disclosure [Table] Organization, Consolidation and Presentation of Financial Statements Customer financing, allowance for credit loss, beginning balance Customer financing, allowance for credit loss, ending balance Financing Receivable, Allowance for Credit Loss Award Type [Domain] Award Type [Domain] Government Government Customers [Member] Government Customers[Member] Noncontrolling interests Equity, Attributable to Noncontrolling Interest Equity Awards Adjustments Equity Awards Adjustments [Member] Other charges and credits, net Other Noncash Income (Expense) Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Compensation Amount Outstanding Recovery Compensation Amount Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Foreign exchange contracts Foreign Exchange Contract [Member] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Contract with customer, liability, revenue recognized Contract with Customer, Liability, Revenue Recognized Net Amounts Payable to Customers Related to Probable Contractual Trade-In Commitments Net Amounts Payable To Customers Related To Probable Contractual Trade-in Commitments [Member] Net Amounts Payable To Customers Related To Probable Contractual Trade-in Commitments Deferred production, unamortized tooling and other nonrecurring costs to be recovered from firm orders at the balance sheet date Recovered Production Costs Excess Recoverable Under Existing Firm Orders The portion of the aggregate amount of manufacturing or production costs and any related deferred costs (for example, initial tooling costs) that exceeds the aggregate estimated cost of all in-process and delivered units on the basis of the estimated average cost of all units expected to be produced under long-term contracts and programs not yet complete, which will be absorbed in cost of sales based on existing firm orders at the latest balance sheet date. Retirement Plan Type [Domain] Retirement Plan Type [Domain] Reporting Unit [Domain] Reporting Unit [Domain] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Schedule of Environmental Remediation Activity Schedule Of Environmental Remediation Activity [Table Text Block] Schedule Of Environmental Remediation Activity Senior Notes Due 2028 Senior Notes Due 2028 [Member] Senior Notes Due 2028 Inventory [Domain] Inventory [Domain] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Long-term debt Long-Term Debt and Lease Obligation Financial Instruments [Domain] Financial Instruments [Domain] Performance restricted stock units Performance Shares [Member] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Net Investment Income [Line Items] Net Investment Income [Line Items] Estimated revenue Present Value Of Estimated Revenue, From Expected Amortization [Abstract] Present Value Of Estimated Revenue, From Expected Amortization Reclassification adjustment for (gain)/loss included in net loss, net of tax of $4 and ($5) Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Minimum Minimum [Member] Eliminations and other unallocated items Eliminations And Other Unallocated Items Net earnings not attributable to reportable business segments excluding activity related to amortization of previously capitalized interest, deferred compensation, share-based plans and pension and postretirement. Intercompany eliminations are also included Company Selected Measure Name Company Selected Measure Name Beginning balance – January 1 Ending balance – March 31 Accrual for Environmental Loss Contingencies Debt Debt Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Accounts payable Accounts Payable, Current Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Net loss attributable to Boeing common shareholders Net Income (Loss) Available to Common Stockholders, Diluted Allowance for Losses on Financial Assets [Line Items] Allowance for Losses on Financial Assets [Line Items] [Line Items] for Allowance for Losses on Financial Assets [Table] Other assets, net of accumulated amortization Capitalized Computer Software, Accumulated Amortization Liabilities, Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Diluted weighted average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Reconciliation of Assets from Segment to Consolidated [Table] Reconciliation of Assets from Segment to Consolidated [Table] Amortization of actuarial loss included in net periodic benefit cost, tax Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax Derivative [Table] Derivative [Table] Entity Small Business Entity Small Business Mandatory convertible preferred stock, convertible, conversion price, increase (in dollars per share) Preferred Stock, Convertible, Conversion Price Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Document Transition Report Document Transition Report Reductions for concessions and other in-kind considerations Concessions And Other In-Kind Considerations To Customers Concessions And Other In-Kind Considerations To Customers Components of Financial Accounting Standards and Cost Accounting Standards Adjustment Components Of Financial Accounting Standards And Cost Accounting Standards Adjustment [Table Text Block] Components Of Financial Accounting Standards And Cost Accounting Standards Adjustment Operating Income (Loss) Before Taxes Operating Income (Loss) Before Taxes [Member] Primary financial statement caption encompassing operating income (loss) before taxes. Underlying Securities Award Underlying Securities Amount AFS - Corporate notes Corporate Note Securities [Member] Equity Component [Domain] Equity Component [Domain] Supplier notes receivable Increase (Decrease) From Supplier Notes Receivable Increase (Decrease) From Supplier Notes Receivable Number of generation aerial refueling tanker Number Of Generation Aerial Refueling Tanker Number Of Generation Aerial Refueling Tanker Document Period End Date Document Period End Date Income Taxes Income Tax Disclosure [Text Block] Account receivable, allowance for credit loss, beginning balance Account receivable, allowance for credit loss, ending balance Accounts Receivable, Allowance for Credit Loss Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Derivative, net liability position, aggregate fair value Derivative, Net Liability Position, Aggregate Fair Value Total equity Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest Airplane Program 787 Airplane Program 787 [Member] Airplane Program 787 [Member] Document Type Document Type Level 3 Fair Value, Inputs, Level 3 [Member] Reconciliation of Assets from Segment to Consolidated Reconciliation of Assets from Segment to Consolidated [Table Text Block] Earnings Per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Loss Contingencies [Table] Loss Contingencies [Table] Additional paid-in capital Additional Paid in Capital Program [Domain] Program [Domain] Program [Domain] Product and Service [Axis] Product and Service [Axis] Business Combination, Contingent Consideration, Type [Domain] Business Combination, Contingent Consideration, Type [Domain] Revenue from contract with customer, excluding assessed tax Revenue from Contract with Customer, Excluding Assessed Tax Investment Income [Table] Investment Income [Table] Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Middle East Middle East [Member] Basic weighted average shares outstanding (in shares) Weighted Average Number of Shares Issued, Basic Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Employee taxes on certain share-based payment arrangements Payment, Tax Withholding, Share-Based Payment Arrangement Decrease to Earnings from operations Increase (decrease) in earnings from operations due to change in accounting estimate Increase (Decrease) In Earnings From Operations Due To Change In Accounting Estimate Increase (Decrease) In Earnings From Operations Due To Change In Accounting Estimate Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Net loss attributable to Boeing common shareholders Net Income (Loss) Available to Common Stockholders, Basic Entity Information [Line Items] Entity Information [Line Items] Other comprehensive income, net of tax Other comprehensive income, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Basis of Presentation Disclosure [Line Items] Basis of Presentation Disclosure [Line Items] Basis of Presentation Disclosure [Line Items] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Schedule of Derivative Instruments, Gains/(Losses) in Statement of Financial Performance Derivative Instruments, Gain (Loss) [Table Text Block] Boeing Company Boeing Company [Member] Boeing Company Level 1 Fair Value, Inputs, Level 1 [Member] Airplane Program 737 Airplane Program 737 [Member] Airplane Program 737 [Member] MQ-25 MQ-25 [Member] MQ-25 Diluted loss per share (in dollars per share) Diluted net loss per share (in dollars per share) Earnings Per Share, Diluted Accrued liabilities Increase (Decrease) in Other Accrued Liabilities Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Cash dividends declared on Mandatory convertible preferred stock Dividends, Preferred Stock, Cash Sale of stock, number of shares issued in transaction (in shares) Sale of Stock, Number of Shares Issued in Transaction Equity instrument, convertible, threshold consecutive trading days trigger period Equity Instrument, Convertible, Threshold Consecutive Trading Days Trigger Period Equity Instrument, Convertible, Threshold Consecutive Trading Days Trigger Period Treasury stock, shares (in shares) Treasury Stock, Common, Shares Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract] Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract] Consolidation Items [Domain] Consolidation Items [Domain] Derivative liability, statement of financial position [Extensible Enumeration] Derivative Liability, Statement of Financial Position [Extensible Enumeration] Investments, Debt and Equity Securities [Abstract] Gross profit Gross Profit Foreign Exchange Contracts [Domain] Foreign exchange contracts [Domain] [Domain] for Foreign exchange contracts [Axis] Commercial Aircraft Commitments Commercial Aircraft Commitments [Member] Specific-price trade-in commitments with certain customers that give them the right to trade in used aircraft upon the purchase of new aircraft. Commodity Contracts [Domain] Commodity Contracts [Domain] [Domain] for Commodity Contracts [Axis] Commercial Airplanes Commercial Airplanes Segment [Member] Commercial Airplanes Segment [Member] (Loss)/income from operating investments, net Income (Loss) from Investments This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures). Customer Financing [Abstract] Financing Receivables and Operating Lease Equipment [Abstract] Financing Receivables and Operating Lease Equipment Intersegment revenues eliminated on consolidation Intersegment Eliminations [Member] Expiration Date Trading Arrangement Expiration Date Shareholders’ equity: Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Property, plant and equipment, net of accumulated depreciation of $23,961 and $23,613 Property, Plant and Equipment, Net Unrealized loss on certain investments, net of tax of $0 and $0 Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Investments Investments [Member] Financing receivables and operating lease equipment, net Financing Receivables And Operating Lease Equipment, Net Non-current portion of notes receivable, investment in sales-type/finance leases, operating lease equipment, less accumulated depreciation, less allowance for losses on receivables. Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Accounts receivable Increase (Decrease) in Accounts Receivable Asia Asia [Member] Entity Current Reporting Status Entity Current Reporting Status Debt repaid on Spirit’s behalf Debt Repaid On Spirit's Behalf [Member] Debt Repaid On Spirit's Behalf Derivative [Line Items] Derivative [Line Items] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Accrued liabilities Derivative Liability, Gross Liability Including Not Subject to Master Netting Arrangement Financial Instrument [Axis] Financial Instrument [Axis] Non-cash items –  Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Noncash Item [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Executive Category: Executive Category [Axis] Debt repayments Repayments of Debt Valuation, Market Approach Valuation, Market Approach [Member] Current Fiscal Year End Date Current Fiscal Year End Date Defense, Space & Security Boeing Defense Space Security Segment [Member] Boeing Defense Space And Security Segment. Scenario Two Stock Conversion, Scenario Two [Member] Stock Conversion, Scenario Two Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Legal Proceedings [Abstract] Legal Proceedings [Abstract] Legal Proceedings [Abstract] Aircraft Type [Axis] Aircraft Type [Axis] Mandatory convertible preferred stock Convertible Preferred Stock [Member] Schedule of Guarantor Obligations Schedule of Guarantor Obligations [Table Text Block] Fiscal Year [Domain] Fiscal Year [Domain] Domain for Information by fiscal year Net recorded balance, accrued liabilities Derivatives Derivative Liability Exchange of Spirit share-based awards Exchange Of Spirit Share-based Awards [Member] Exchange Of Spirit Share-based Awards Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Loss contingency, settlement agreement, additional fine Loss Contingency, Settlement Agreement, Additional Fine Loss Contingency, Settlement Agreement, Additional Fine Dividends received Proceeds from Equity Method Investment, Distribution Fair Value, Assets and Liabilities Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Timing of Transfer of Good or Service [Domain] Timing of Transfer of Good or Service [Domain] Shares excluded from the computation of diluted earnings (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Diluted Weighted Average Number of Shares Outstanding, Diluted [Abstract] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Credit guarantees Financial Guarantee [Member] Unallocated items, eliminations and other Unallocated items, eliminations and other Operating Income (Loss) Excluding Unallocated Pension and Postretirement Adjustments The net result for the period of deducting operating expenses from operating revenues, excluding adjustments for unallocated pension and postretirement expenses. 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Supplier Finance Program, Majority of Amounts Payable Supplier Finance Program, Majority Of Amounts Payable [Member] Supplier Finance Program, Majority Of Amounts Payable Schedule of Weighted Average Number of Shares Schedule of Weighted Average Number of Shares [Table Text Block] Common stock, shares, issued (in shares) Common Stock, Shares, Issued Derivative asset, statement of financial position [Extensible Enumeration] Derivative Asset, Statement of Financial Position [Extensible Enumeration] Reductions for payments made, net of recoveries Accrual for Environmental Loss Contingencies, Payments Liability Type [Axis] Liability Type [Axis] Liability Type [Axis] Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Operating lease, lease income Operating Lease, Lease Income Increase to Diluted loss per share (in dollars per share) Change In Earnings Per Share Due To Change In Accounting Estimate Increase/decrease in diluted earnings per share due to change in accounting estimate. Commitments And Contingencies [Line Items] Loss Contingencies [Line Items] Security Exchange Name Security Exchange Name Reconciliation of Revenue from Segments to Consolidated Reconciliation of Revenue from Segments to Consolidated [Table Text Block] Dividends, preferred stock Dividends, Preferred Stock Business Combination, Consideration Transferred, Equity Interest, Type [Domain] Business Combination, Consideration Transferred, Equity Interest, Type [Domain] Asset Class [Domain] Asset Class [Domain] Statement [Line Items] Statement [Line Items] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Revenue from contract with customer, excluding assessed tax, percentage Revenue from Contract with Customer, excluding assessed tax, Percentage Percent, (excluding tax collected from customer), of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Cash and cash equivalents Cash and cash equivalents at end of period Cash and Cash Equivalent Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Common stock Common Stock [Member] Deferred production, unamortized tooling and other nonrecurring costs to be recovered from future orders Unrecovered Production Costs, Excess Unrecoverable under Existing Firm Orders Net decrease in cash & cash equivalents, including restricted Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Guarantor Obligations [Line Items] Guarantor Obligations [Line Items] Recoveries Allowance for Credit Loss, Recoveries Amount of increase in allowance for credit loss, from recovery. Statistical Measurement [Domain] Statistical Measurement [Domain] Global Services Global Services [Member] Boeing Global Services Segment. Other current assets Other Current Assets [Member] Property, plant and equipment Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment Amortization of prior service credits included in net periodic benefit cost, net of tax of $4 and ($1) Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax Commercial aircraft programs Inventory Commercial Aircraft Programs Inventoried costs on commercial aircraft programs which include direct engineering, production and tooling costs, and applicable overhead, not in excess of estimated net realizable value. Beginning balance – January 1 Ending balance – March 31 Standard and Extended Product Warranty Accrual Asset Class [Axis] Asset Class [Axis] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Other assets Other Noncurrent Assets [Member] Income (loss) from equity method investments Income (Loss) from Equity Method Investments Equity method investments - United Launch Alliance Equity Method investments - United Launch Alliance [Member] Equity Method investments - United Launch Alliance Unbilled receivables, net Unbilled Contracts Receivable Supplier Finance Program [Axis] Supplier Finance Program [Axis] Accounts payable Increase (Decrease) in Accounts Payable Schedule of Depreciation and Amortization by Segment Schedule Of Depreciation And Amortization By Segment [Table Text Block] Schedule Of Depreciation And Amortization Expense By Segment [Table Text Block] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Business combination, finalized purchase price allocation, duration Business Combination, Finalized Purchase Price Allocation, Duration Business Combination, Finalized Purchase Price Allocation, Duration Basic loss per share (in dollars per share) Basic net loss per share (in dollars per share) Earnings Per Share, Basic AFS - Commercial paper Commercial Paper [Member] Preferred stock, dividends per share, declared (in dollars per share) Preferred Stock, Dividends Per Share, Declared Net current period Other comprehensive (loss)/income Other Comprehensive Income (Loss), Net of Tax Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Boeing common stock exchanged for Spirit common stock Boeing Common Stock Exchanged For Spirit Common Stock [Member] Boeing Common Stock Exchanged For Spirit Common Stock Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Antidilutive due to Net Loss Antidilutive due to Net Loss [Member] Antidilutive due to Net Loss Revenue, remaining performance obligation, amount Revenue, Remaining Performance Obligation, Amount Measurement Input Type [Domain] Measurement Input Type [Domain] Commercial Crew Commercial Crew [Member] Commercial Crew Fair Value, Assets Measured on Nonrecurring Basis Using Unobservable Inputs Fair Value Measurements, Nonrecurring [Table Text Block] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Contracts with Customers Long-Term Contracts or Programs Disclosure [Text Block] Segment Reporting, Asset Reconciling Item [Line Items] Segment Reporting, Asset Reconciling Item [Line Items] Hedging Designation [Domain] Hedging Designation [Domain] Total liabilities and equity Liabilities and Equity Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Defined Benefit Pension Plans & Other Postretirement Benefits Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Capitalized precontract costs Inventory, Precontract Costs Inventory, Precontract Costs General and administrative expense General and Administrative Expense [Member] Capital expenditures Segment, Expenditure, Addition to Long-Lived Assets Guarantees [Abstract] Guarantees [Abstract] Line of credit facility, expiration period Line of Credit Facility, Expiration Period Treasury stock Treasury Stock, Common [Member] Pay vs Performance Disclosure [Line Items] T-7A Production T-7A Production [Member] T-7A Production AFS - US government agencies US Government Agencies Debt Securities [Member] Preferred stock, liquidation preference per share (in dollars per share) Preferred Stock, Liquidation Preference Per Share Spirit Acquisition Business Combination [Text Block] Advances and progress billings Business Combination, Recognized Liability Assumed, Advances And Progress Billings, Liability Business Combination, Recognized Liability Assumed, Advances And Progress Billings, Liability Other long-term liabilities Other Liabilities, Noncurrent Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Other long-term liabilities Increase (Decrease) in Other Noncurrent Liabilities Derivative instruments: Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax [Abstract] Comprehensive income attributable to Boeing Shareholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Measurement Input Type [Axis] Measurement Input Type [Axis] Name Measure Name Class of Stock [Line Items] Class of Stock [Line Items] Allowance for Losses on Financial Assets [Abstract] Allowance for Losses on Financial Assets [Abstract] Allowance for Losses on Financial Assets [Abstract] Deferred income taxes Deferred Income Tax Liabilities, Net Operating lease equipment, accumulated depreciation Property, Plant, and Equipment, Lessor Asset under Operating Lease, Accumulated Depreciation Contract with Customer, Asset, Allowance for Credit Loss [Roll Forward] Contract with Customer, Asset, Allowance for Credit Loss [Roll Forward] Debt, excluding capital lease obligations, carrying amount Long-Term Debt Total assets Assets Assets Geographical [Domain] Geographical [Domain] External Credit Rating by Grouping [Domain] External Credit Rating by Grouping [Domain] Lessee, finance lease, term of contract (in years) Lessee, Finance Lease, Term of Contract Cash flows – operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Other segment items Segment Reporting, Other Segment Item, Amount Acquired finite-lived intangible assets, weighted average useful life Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life Scenario Two and Three Stock Conversion, Scenario Two And Three [Member] Stock Conversion, Scenario Two And Three Inventories Inventory Disclosure [Text Block] Other Business Combination, Recognized Asset Acquired And Liability Assumed, Other Business Combination, Recognized Asset Acquired And Liability Assumed, Other Equity and other investments Other equity investments Other Investments Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Environmental [Roll Forward] Accrual for Environmental Loss Contingencies [Roll Forward] Pension and other postretirement plans Increase (Decrease) in Obligation, Pension and Other Postretirement Benefits Level 2 Fair Value, Inputs, Level 2 [Member] Spirit AeroSystems Holdings, Inc. Spirit AeroSystems Holdings, Inc. [Member] Spirit AeroSystems Holdings, Inc. Equity method investments Equity Method Investments Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Business Combination [Domain] Business Combination [Domain] Unbilled receivables, allowance for credit loss, beginning balance Unbilled receivables, allowance for credit loss, ending balance Contract with Customer, Asset, Allowance for Credit Loss Allowance for Losses on Financial Assets [Table] Allowance for Losses on Financial Assets [Table] Disclosure of information about allowance for credit loss on financial assets. PEO PEO [Member] Estimated Proceeds from Collateral/Recourse Estimated Proceeds from Collateral or Recourse Indicates, if estimable, the approximate extent to which recourse provisions or proceeds from liquidation of any assets held either as collateral or by third parties would be expected to cover the maximum potential amount of future payments under the guarantee (or each group of similar guarantees). April through December 2026 Other Commitment, to be Paid, Remainder of Fiscal Year Proceeds from investments Proceeds from Sale, Maturity and Collection of Investments United States UNITED STATES Changes in assets and liabilities –  Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Schedule of Product Warranty Activity Schedule of Product Warranty Liability [Table Text Block] Retained earnings Retained Earnings [Member] Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Cash & cash equivalents, including restricted, at beginning of year Cash & cash equivalents, including restricted, at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Net recorded balance, other assets Derivatives Derivative Asset Fair Value, Nonrecurring Fair Value, Nonrecurring [Member] Joint Venture Joint Venture [Member] Joint Venture Acquired intangible assets, net Intangible Assets, Net (Excluding Goodwill) Capitalized Precontract Costs Capitalized Precontract Costs [Member] The capitalization of precontract costs in inventory only if the costs can be directly associated with a specific, anticipated contract and if their recoverability from that contract is probable. Product and Service [Domain] Product and Service [Domain] Equity method investments - Other Equity Method Investments - Other [Member] Equity Method Investments - Other Treasury shares issued for 401(k) contributions Employee 401(k) Treasury Stock Contribution, Noncash Expense Amount of noncash expense for treasury stock contributed to employee 401(k) plans. Net loss Net loss Net (loss)/earnings Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Total liabilities Liabilities, Fair Value Disclosure Business Combination [Table] Business Combination [Table] Derivative, notional amount Derivative, Notional Amount Business Combination, Consideration Transferred, Equity Interest, Type [Axis] Business Combination, Consideration Transferred, Equity Interest, Type [Axis] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Net actuarial gain arising during the period, net of tax of ($2) and $0 Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax Business Combination, Recognized Asset Acquired and Liability Assumed Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block] City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Business combination, recognized liability assumed, accrued liability Business Combination, Recognized Liability Assumed, Accrued Liability Business Combination, Recognized Liability Assumed, Accrued Liability Amortization of previously capitalized interest Interest Costs Capitalized Range Median or Average Range Of Fair Value Of Assets Measured On Nonrecurring Basis Valuation Techniques Range Of Fair Value Of Assets Measured On Nonrecurring Basis Valuation Techniques Derivative, maturity Derivative, Maturity Derivative, Maturity 2026 Present Value Of Estimated Revenue, From Expected Amortization, Year One Present Value Of Estimated Revenue, From Expected Amortization, Year One Cash flows – investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] General and administrative expense General and Administrative Expense Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Recognized net actuarial loss/(gain) Defined Benefit Plan, Amortization of Gain (Loss) Costs and expenses Cost of Sales [Member] Goodwill Goodwill Capitalized precontract costs Loss Contingency, Estimate of Possible Loss Notes receivable, net, fair value Notes Receivable, Fair Value Disclosure Number of annual production lot Number Of Annual Production Lot Number Of Annual Production Lot Total non-U.S. revenues Non-US [Member] Accrued pension plan liability, net Liability, Defined Benefit Pension Plan, Noncurrent Amortization of prior service credits included in net periodic benefit cost, tax Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, Tax Inventories Business Combination, Recognized Asset Acquired, Inventory, Current Amortization of actuarial loss included in net periodic benefit cost, net of tax of ($25) and $3 Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax Accounts receivable Business Combination, Recognized Asset Acquired, Receivable, Current Other Performance Measure, Amount Other Performance Measure, Amount Inventory [Line Items] Inventory [Line Items] Short-term debt and current portion of long-term debt Debt, Current 737 Aircraft B-737 [Member] Derivative Instrument Risk [Axis] Derivative Instrument [Axis] Other current assets, net Other Assets, Current Investments [Abstract] Investments [Abstract] Financing Commitment Financing Commitment [Member] Financing commitments related to aircraft on order, including options and those proposed in sales campaigns. Operating Income (Loss) Operating Income (Loss) [Member] Net cash provided/(used) by investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Document Fiscal Year Focus Document Fiscal Year Focus Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Legal Proceedings Legal Matters and Contingencies [Text Block] Commercial Aircraft Programs [Domain] Commercial Aircraft Programs [Domain] Commercial Aircraft Programs [Domain] Valuation allowance Deferred Tax Assets, Valuation Allowance Equity [Abstract] Equity [Abstract] Segment and Revenue Information Segment Reporting Disclosure [Text Block] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Financing Commitments [Line Items] Other Commitments [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Components of Net Periodic Benefit Cost Schedule of Net Benefit Costs [Table Text Block] Other long-term liabilities Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Deferred income taxes Deferred Income Tax Assets, Net Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Depreciation and amortization Depreciation, Depletion and Amortization Guarantor obligations, repurchase commitment, period post delivery Guarantor Obligations, Repurchase Commitment, Period Post Delivery Guarantor Obligations, Repurchase Commitment, Period Post Delivery Early Issue Sales Consideration Early Issue Sales Consideration [Member] Amounts paid or credited in cash, or other consideration given to certain airline customers before the aircraft is delivered. Early issue sales consideration is recognized as a reduction to revenue when the delivery of the aircraft under the contract occurs. Product Warranties [Roll Forward] Movement in Standard Product Warranty Accrual [Roll Forward] Sale of stock, consideration received on transaction Sale of Stock, Consideration Received on Transaction Revenue recognized on fixed-price contracts Fixed-Price Contract [Member] Scenario Four Stock Conversion, Scenario Four [Member] Stock Conversion, Scenario Four Arrangement Duration Trading Arrangement Duration Business Segments [Axis] Segments [Axis] Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Europe Europe [Member] Other Payment for (Proceeds from) Other Investing Activity Share-Based Compensation and Other Compensation Arrangements Share-Based Payment Arrangement [Text Block] Cash and cash equivalents Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent Assets Assets [Abstract] Premium on assumed Spirit Exchangeable Notes Premium On Assumed Exchangeable Notes [Member] Premium On Assumed Exchangeable Notes Underlying Security Market Price Change Underlying Security Market Price Change, Percent Number of equal installments Share-Based Compensation Arrangement By Share-based Payment Award, Number Of Equal Installments Share-Based Compensation Arrangement By Share-based Payment Award, Number Of Equal Installments Debt Instrument [Axis] Debt Instrument [Axis] Fair Value Measurements Fair Value Disclosures [Text Block] Postretirement Plans Retirement Benefits [Text Block] Business Combination [Line Items] Business Combination [Line Items] Debt instrument, interest rate, stated percentage Debt Instrument, Interest Rate, Stated Percentage Total Contractual Trade-In Commitment Total Contractual Trade In Value Maximum [Member] The total contractual trade-in value of used aircraft that we have agreed to purchase from customers upon their purchase of new aircraft. [Member] Less: Mandatory convertible preferred stock dividends accumulated during the period Preferred Stock Dividends, Income Statement Impact, Basic Preferred Stock Dividends, Income Statement Impact, Basic Environmental loss contingency, operation and maintenance period, maximum Environmental Loss Contingency, Operation And Maintenance Period, Maximum Environmental Loss Contingency, Operation And Maintenance Period, Maximum Entity Registrant Name Entity Registrant Name Cash flow hedge gain (loss) to be reclassified within 12 months Cash Flow Hedge Gain (Loss) to be Reclassified within 12 Months Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Net periodic benefit cost/(income) Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Total assets Fair Value Assets, Fair Value Disclosure Schedule of Segment, Reconciliation of Other Items from Segments to Consolidated Segment, Reconciliation of Other Items from Segments to Consolidated [Table Text Block] Beginning balance – January 1 Ending balance – March 31 737 MAX customer concessions and other considerations liability Grounding Customer Concessions And Other Considerations Liability Grounding Customer Concessions And Other Considerations Liability Granted in period, weighted average grant date fair value (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Interest cost Defined Benefit Plan, Interest Cost Commercial spare parts, used aircraft, general stock materials and other Other Inventory, Gross Sales of services Service [Member] Restatement Determination Date: Restatement Determination Date [Axis] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Reporting Unit [Axis] Reporting Unit [Axis] Investment, membership interest ownership percentage Investment, Membership Interest Ownership Percentage Investment, Membership Interest Ownership Percentage Other Proceeds from (Payment for) Other Financing Activity Amounts reclassified from AOCI Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Name Trading Arrangement, Individual Name Sales-type and direct financing leases, lease income Sales-Type and Direct Financing Leases, Lease Income Amount of lease income from variable lease payments, interest income from net investment on Sales-Type and Direct Financing Leases, and profit (loss) recognized at commencement. Treasury shares issued for 401(k) contributions Stock Issued During Period, Value, Other Contract with Customer, Basis of Pricing [Domain] Contract with Customer, Basis of Pricing [Domain] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Business combination, consideration transferred, equity interest Business Combination, Consideration Transferred, Equity Interest Mandatory convertible preferred stock Preferred Stock [Member] Name Awards Close in Time to MNPI Disclosures, Individual Name Escrow deposit Escrow Deposit Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Other commitment Total Other Commitment Share-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Unrealized loss on certain investments, tax OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax Revenue, remaining performance obligation, percent recognized Revenue, Remaining Performance Obligation, Percent Recognized The amount of the remaining performance obligation expected to be recognized as revenue. Contract value Contract Value Amount the entity is obligated to receive under the agreement: including engineering, design, manufacturing, or development. Depreciation and amortization expense, business segment allocation Depreciation and Amortization Expense, Business Segment Allocation Allocation of depreciation and amortization from centrally managed assets to the primary business segments based on usage and occupancy Segments [Domain] Segments [Domain] Income Statement Location [Axis] Statement of Income Location, Balance [Axis] Accumulated Other Comprehensive Income (Loss) [Roll Forward] Accumulated Other Comprehensive Income (Loss) [Roll Forward] Accumulated Other Comprehensive Income (Loss) Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Statement of Financial Position Location, Balance [Domain] Statement of Financial Position Location, Balance [Domain] Inventories Increase (Decrease) in Inventories Unrealized Gains and Losses on Certain Investments AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] United Launch Alliance (ULA) United Launch Alliance (ULA) [Member] United Launch Alliance (ULA) Earnings Per Share Earnings Per Share, Policy [Policy Text Block] Property, plant and equipment, net of accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Long-term Contracts Revenue [Policy Text Block] Senior Notes Senior Notes [Member] Mandatory convertible preferred stock, 6.00% Series A, par value $1.00 – 20,000,000 shares authorized; 5,750,000 shares issued; aggregate liquidation preference $5,750 Preferred Stock, Value, Issued Increase/(decrease) to Revenue Increase/(Decrease) in Revenue due to change in accounting estimate Changes in estimated revenues recognized using a cumulative catch-up adjustment which recognizes in the current period the cumulative effect of the changes on current and prior periods based on a contract’s percent complete Property, plant, and equipment, lessor asset under operating lease, after accumulated depreciation Property, Plant, and Equipment, Lessor Asset under Operating Lease, after Accumulated Depreciation All Executive Categories All Executive Categories [Member] Common stock, par value $5.00 – 1,200,000,000 shares authorized; 1,012,261,159 shares issued Common Stock, Value, Issued Less: earnings available to participating securities Undistributed Earnings (Loss) Allocated to Participating Securities, Basic Short-term and other investments Short-Term Investments Inventory subject to uncertainty Inventory Amount, Unpriced Change Orders for Long-Term Contracts or Programs Net loss available to common shareholders Net Income (Loss) Allocated To Common Stockholders, Basic Net Income (Loss) Allocated To Common Stockholders, Basic Preferred stock, liquidation preference, value Preferred Stock, Liquidation Preference, Value Acquired intangible assets Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived Business Combination [Axis] Business Combination [Axis] Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Airplane Program 777x Airplane Program 777x [Member] Airplane Program 777x [Member] Non- controlling interests Noncontrolling Interest [Member] Backlog Backlog [Policy Text Block] Describes an entity's accounting policy for backlog. PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Hedging Designation [Axis] Hedging Designation [Axis] Debt, excluding capital lease obligations, fair value Debt Instrument, Fair Value Disclosure Scenario [Axis] Scenario [Axis] Total defined benefit pension plans and other postretirement benefits, net of tax Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Other comprehensive income (loss), cash flow hedge, gain (loss), reclassification, before tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax Derivative Contract Type [Domain] Derivative Contract [Domain] Supplier advances Advances on Inventory Purchases Financing receivables and operating lease equipment, net Increase (Decrease) Financing Receivables And Operating Lease Equipment, Net The net change during the reporting period in notes receivable, investment in sales-type/finance leases, operating lease equipment, less accumulated depreciation; less allowance for losses on receivables. All Individuals All Individuals [Member] Long-Term Debt, Type [Domain] Long-Term Debt, Type [Domain] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Payments to acquire property, plant and equipment Payments to Acquire Property, Plant, and Equipment Revenue recognized at a point in time Transferred at Point in Time [Member] Name Forgone Recovery, Individual Name VC-25B VC-25B [Member] VC-25B Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Customer Concession And Other Consideration Liability [Roll Forward] Customer Concession And Other Consideration Liability [Roll Forward] Customer Concession And Other Consideration Liability Unamortized tooling and other non-recurring costs Unamortized Tooling Carrying amount as of the balance sheet date of unamortized tooling and other non-recurring costs related to commercial aircraft programs. Time deposits Other Short-Term Investments Unallocated items, eliminations and other Corporate Reconciling Items And Eliminations [Member] Items used in reconciling reportable segments' amounts to consolidated amount, eliminating entries used in operating segment consolidation and corporate headquarters or functional department that may not earn revenues or may earn revenues that are only incidental to the activities of the entity and is not considered an operating segment Thereafter Other Commitment, To Be Paid, After Year Four Other Commitment, To Be Paid, After Year Four Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Supplier Finance Program [Domain] Supplier Finance Program [Domain] Geographical [Axis] Geographical [Axis] Other Increase (Decrease) in Other Operating Assets and Liabilities, Net Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Schedule of Investments Schedule of Investments [Table Text Block] Tabular disclosure of investments held. Schedule of Financial Assets, Allowance for Credit Loss Financial Assets, Allowance for Credit Loss [Table Text Block] Tabular disclosure of allowance for credit loss on financial assets. 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Examples of customer financing receivables include, but are not limited to, notes receivable, finance lease receivables, and operating lease equipment less allowance for losses on receivables. 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Total net assets acquired Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill Preliminary Business Combination, Preliminary Amount [Abstract] Business Combination, Preliminary Amount Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Scenario Three Stock Conversion, Scenario Three [Member] Stock Conversion, Scenario Three All Adjustments to Compensation All Adjustments to Compensation [Member] Amendment Flag Amendment Flag Postretirement Other Postretirement Plans Other Postretirement Benefits Plan [Member] Other non-U.S. Other [Member] Other Foreign Countries Treasury stock, at cost – 224,344,344 and 227,562,887 shares Treasury Stock, Common, Value Termination Date Trading Arrangement Termination Date Total revenues from contracts with customers External Customers [Member] External Customers [Member] Unbilled receivables Increase (Decrease) in Contract with Customer, Asset Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Basic weighted average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Depositary Shares Depositary Shares [Member] Depositary Shares Other assets Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement Segment Reporting [Abstract] Segment Reporting [Abstract] Total costs and expenses Cost of Revenue Debt Disclosure [Abstract] Debt Disclosure [Abstract] Commercial Aircraft Programs [Axis] Commercial Aircraft Programs [Axis] Commercial Aircraft Programs [Axis] Scenario [Domain] Scenario [Domain] Accounts receivable, write-offs Accounts Receivable, Allowance for Credit Loss, Writeoff Unbilled receivables, changes in estimates Contract with Customer, Asset, Credit Loss Expense (Reversal) Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Time Deposits Time Deposits [Member] Time Deposits Financing Receivables and Operating Lease Equipment [Line Items] Financing Receivables and Operating Lease Equipment [Line Items] Financing Receivables and Operating Lease Equipment Use of Estimates Use of Estimates, Policy [Policy Text Block] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Dividends paid on mandatory convertible preferred stock Dividends paid on mandatory convertible preferred stock Payments of Dividends External Credit Rating, Non Investment Grade External Credit Rating, Noninvestment Grade [Member] Currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Insider Trading Arrangements [Line Items] Total liabilities Liabilities Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Contingent repurchase commitments Contingent Repurchase Commitment [Member] Agreements to repurchase Sale Aircraft at a specified price, generally 10 to 15 years after delivery of Sale Aircraft, contingent upon a future, mutually acceptable agreement for the sale of additional new aircraft and exercise by the customer of its right to sell the Sale Aircraft to us. Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Depositary Share Depositary Share [Member] Depositary Share Settlement of loans, advances and other payments to Spirit Settlement Of Loans, Advance And Other Payments With Spirit [Member] Settlement Of Loans, Advance And Other Payments With Spirit Aircraft value publications Aircraft Value Publications [Member] Aircraft Value Publications [Member] Long-term debt Business Combination, Recognized Liability Assumed, Long-Term Debt, Noncurrent Consolidation Items [Axis] Consolidation Items [Axis] Fair Value, Assets Measured on Nonrecurring Basis, Valuation Techniques Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block] Counterparty Name [Axis] Counterparty Name [Axis] Available-for-sale debt investments Available-for-sale debt investments: Debt Securities, Available-for-Sale Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Commercial Aircraft Commitments [Domain] Commercial Aircraft Commitments [Domain] [Domain] for Commercial aircraft commitments by probability that trade-in will be exercised. Non-NEOs Non-NEOs [Member] Contingent on Customer Negotiations Contingent On Customer Negotiations [Member] Contingent On Customer Negotiations [Member]