Commitments and Contingencies Disclosure [Abstract] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Equity [Abstract] Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Earnings Per Share [Abstract] Earnings Per Share [Abstract] Earnings Per Share, Basic and Diluted [Abstract] Earnings Per Share, Basic and Diluted [Abstract] Dilutive effect of of stock awards and options granted to employees under stock-based compensation plans Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Common stock dividends per share, declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Increase in quarterly common stock dividend (percent) Increase (Decrease) in Stock Dividend, Percentage Increase (Decrease) in Stock Dividend, Percentage Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Nonvested Restricted Stock Shares Activity [Table Text Block] Schedule of Nonvested Share Activity [Table Text Block] Cash Units and Cash Performance Units Aggregate Payout Amount [Table Text Block] Cash Units and Cash Performance Units Aggregate Payout Amount [Table Text Block] [Table Text Block] for Cash Units and Cash Performance Units Aggregate Payout Amount [Table] Organization, Consolidation and Presentation of Financial Statements [Abstract] Principles of Consolidation Consolidation, Policy [Policy Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Fiscal Period Policy Fiscal Period, Policy [Policy Text Block] Accounting Estimates Use of Estimates, Policy [Policy Text Block] Revenue Recognition Revenue Recognition, Long-term Contracts [Policy Text Block] Description of New Accounting Pronouncements Not yet Adopted Description of New Accounting Pronouncements Not yet Adopted [Text Block] Pension and Other Postretirement Plans Pension and Other Postretirement Plans, Policy [Policy Text Block] Earnings Per Share Earnings Per Share, Policy [Policy Text Block] Investments in Marketable Securities Marketable Securities, Policy [Policy Text Block] Derivative Financial Instruments and Hedging Activities Derivatives, Policy [Policy Text Block] Fair Value of Long-term Debt Fair Value of Financial Instruments, Policy [Policy Text Block] U.S. Government Cost Claims Government Contractors, Contracts in Progress, Policy [Policy Text Block] Environmental Matters Environmental Costs, Policy [Policy Text Block] New Accounting Pronouncements and Changes in Accounting Principles [Text Block] New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Retirement Benefits [Abstract] RETIREMENT BENEFITS Pension and Other Postretirement Benefits Disclosure [Text Block] Business Combinations [Abstract] Business Combination Disclosure [Text Block] Business Combination Disclosure [Text Block] Change in Contract with Customer, Asset and Liability [Abstract] Unbilled receivables, net Unbilled Receivables, Current Amount of increase (decrease) in Unbilled Receivables Amount of increase (decrease) in Unbilled Receivables Amount of increase (decrease) in Unbilled Receivables Percent increase (decrease) in Unbilled Receivables Percent increase (decrease) in Unbilled Receivables Percent increase (decrease) in Unbilled Receivables Advance payments and amounts in excess of costs incurred Customer Advances, Current Amount of decrease (increase) in Customer Advances Amount of decrease (increase) in Customer Advances Amount of decrease (increase) in Customer Advances Percent decrease (increase) in Customer Advances Percent decrease (increase) in Customer Advances Percent decrease (increase) in Customer Advances Contract with Customer, Asset, Net, Current Contract with Customer, Asset, Net, Current Amount of increase (decrease) in net contract assets (liabilities) Amount of increase (decrease) in net contract assets (liabilities) Amount of increase (decrease) in net contract assets (liabilities) Percent increase (decrease) in net contract assets (liabilities) Percent increase (decrease) in net contract assets (liabilities) Percent increase (decrease) in net contract assets (liabilities) Change in Contract with Customer, Liability [Abstract] Contract with Customer, Liability, Revenue Recognized Contract with Customer, Liability, Revenue Recognized Document and Entity Information [Abstract] Document and Entity Information. Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Document Type Document Type Amendment Flag Amendment Flag Document Fiscal Year Focus Document Fiscal Year Focus Document Period End Date Document Period End Date Document Fiscal Period Focus Document Fiscal Period Focus Current Fiscal Year End Date Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating Segments [Member] Operating Segments [Member] Intersegment Eliminations [Member] Intersegment Eliminations [Member] Net FAS (service)/CAS pension adjustment [Member] Net FAS (service)/CAS pension adjustment [Member] Net FAS (service)/CAS pension adjustment [Member] Corporate, Non-Segment [Member] Corporate, Non-Segment [Member] Segment Reconciling Items [Member] Segment Reconciling Items [Member] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Aerospace Systems [Member] Aerospace Systems [Member] Aerospace Systems reporting segment. Mission Systems [Member] Mission Systems [Member] Mission Systems reporting segment. Technology Services [Member] Technology Services [Member] Technology Services reporting segment. Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Number of reportable segments Number of Reportable Segments Sales Revenue, Net Operating income Operating Income (Loss) Components of net periodic benefit cost Schedule of Costs of Retirement Plans [Table Text Block] Employer contributions to retirement plans Schedule of Defined Benefit Plans Disclosures [Table Text Block] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Restricted Stock Units (RSUs) [Member] Restricted Stock Units (RSUs) [Member] Performance Shares [Member] Performance Shares [Member] Cash Units Cash Units [Member] Cash Units [Member] Cash Performance Units Cash Performance Units [Member] Cash performance units. Cash Units and Cash Performance Units Cash Units and Cash Performance Units [Member] Cash Units and Cash Performance Units [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Deferred Compensation Cash-based Arrangements, Liability, Current and Noncurrent Deferred Compensation Cash-based Arrangements, Liability, Current and Noncurrent Shares granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Restricted Stock Rights and Restricted Performance Stock Rights Grant Date Aggregate Fair Value Restricted Stock Rights and Restricted Performance Stock Rights Grant Date Aggregate Fair Value Restricted Stock Rights and Restricted Performance Stock Rights Grant Date Aggregate Fair Value Income Tax Disclosure [Abstract] INCOME TAXES Income Tax Disclosure [Text Block] Accounting Changes and Error Correction [Abstract] Accounting Changes and Error Corrections [Abstract] Schedule of Change in Accounting Estimate [Table] Schedule of Change in Accounting Estimate [Table] Change in Accounting Estimate by Type [Axis] Change in Accounting Estimate by Type [Axis] Change in Accounting Estimate, Type [Domain] Change in Accounting Estimate, Type [Domain] Contracts Accounted for under Percentage of Completion [Member] Contracts Accounted for under Percentage of Completion [Member] Change in Accounting Estimate [Line Items] Change in Accounting Estimate [Line Items] Contract with Customer, Performance Obligation Satisfied in Previous Period Contract with Customer, Performance Obligation Satisfied in Previous Period Operating Income (Loss) Net earnings Net Income (Loss) Attributable to Parent Earnings Per Share, Diluted EARNINGS PER SHARE, SHARE REPURCHASES AND DIVIDENDS ON COMMON STOCK Stockholders' Equity Note Disclosure [Text Block] Statement of Cash Flows [Abstract] Operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Operating Activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile to net cash used in operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Stock-based compensation Share-based Compensation Deferred income taxes Deferred Income Taxes and Tax Credits Changes in assets and liabilities: Increase (Decrease) in Operating Assets [Abstract] Accounts receivable, net Increase (Decrease) in Accounts Receivable Unbilled receivables, net Increase (Decrease) in Unbilled Receivables Inventoried costs, net Increase (Decrease) in Inventories Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Accounts payable and other liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Income taxes payable Increase (Decrease) in Income Taxes Payable Retiree benefits Increase (Decrease) in Obligation, Pension and Other Postretirement Benefits Other, net Other Noncash Income (Expense) Net cash used in operating activities Net Cash Provided by (Used in) Operating Activities Investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Capital expenditures Payments to Acquire Property, Plant, and Equipment Other, net Payments for (Proceeds from) Other Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Common stock repurchases Payments for Repurchase of Common Stock Cash dividends paid Payments of Ordinary Dividends, Common Stock Payments of employee taxes withheld from share-based awards Payments Related to Tax Withholding for Share-based Compensation Net (payments to) proceeds from credit facilities Proceeds from (Repayments of) Lines of Credit Other, net Proceeds from (Payments for) Other Financing Activities Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Decrease in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents, beginning of year Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents, end of period Fair Value Disclosures [Abstract] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Cash Flow Hedging [Member] Cash Flow Hedging [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Debt and Capital Lease Obligations Debt and Capital Lease Obligations Long-term Debt, Fair Value Long-term Debt, Fair Value Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative, Notional Amount Derivative, Notional Amount Statement of Comprehensive Income [Abstract] Sales Revenue, Net [Abstract] Product Sales Revenue, Goods, Net Service Sales Revenue, Services, Net Total sales Operating costs and expenses Cost of Goods and Services Sold [Abstract] Product Cost of Goods Sold Service Cost of Services General and administrative expenses General and Administrative Expense Operating income Other income (expense) Other Nonoperating Income (Expense) [Abstract] Interest expense Interest and Debt Expense Net FAS (non-service) Pension Benefit (Expense) Net FAS (non-service) Pension Benefit (Expense) Net FAS (non-service) Pension Benefit (Expense) Other, net Other Nonoperating Income (Expense) Earnings before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Federal and foreign income tax expense Income Tax Expense (Benefit) Net earnings Basic earnings per share Earnings Per Share, Basic [Abstract] Basic earnings per share Earnings Per Share, Basic Weighted-average common shares outstanding, in millions Weighted Average Number of Shares Outstanding, Basic Diluted earnings per share Earnings Per Share, Diluted [Abstract] Diluted earnings per share Weighted-average diluted shares outstanding, in millions Weighted Average Number of Shares Outstanding, Diluted Net earnings (from above) Change in unamortized benefit plan costs, net of tax Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Change in cumulative translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Other, net Other Comprehensive Income (loss), other adjustment, net of tax Other Comprehensive Income (loss), other adjustment, net of tax Other comprehensive income, net of tax Other Comprehensive Income (Loss), Net of Tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Payments to Acquire Businesses, Gross Payments to Acquire Businesses, Gross Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt Business Acquisition, Share Price Business Acquisition, Share Price Schedule of Change in Accounting Estimate [Table Text Block] Schedule of Change in Accounting Estimate [Table Text Block] Contract with Customer, Asset and Liability [Table Text Block] Contract with Customer, Asset and Liability [Table Text Block] Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Revenue by Major Customers, by Reporting Segments [Table] Schedule of Revenue by Major Customers, by Reporting Segments [Table] Customer [Axis] Customer [Axis] Customer [Domain] Customer [Domain] US Government [Member] US Government [Member] US Government customers. International Customer [Member] International Customer [Member] International Customer Other Customers [Member] Other Customers [Member] US state and local government and US commercial customers. Revenue, Major Customer [Line Items] Revenue, Major Customer [Line Items] Concentration Risk, Percentage Concentration Risk, Percentage Schedule of Share Repurchases, by Program [Table] Class of Treasury Stock [Table] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] September 2015 Share Repurchase Program Original Authorization September 2015 Share Repurchase Original Authorization [Member] September 2015 Share Repurchase Original Authorization [Member] Share Repurchase [Line Items] Equity, Class of Treasury Stock [Line Items] Amount Authorized Stock Repurchase Program, Authorized Amount Shares Retired Treasury Stock, Shares, Retired Average Cost Per Share Treasury Stock Acquired, Average Cost Per Share Shares Repurchased Stock Repurchased and Retired During Period, Shares Share Repurchases - Notes to Table Share Repurchases Table Abstract Share Repuchase Table Footnotes, detail tags Shares repurchased amount Treasury Stock, Value, Acquired, Par Value Method Amount remaining under authorization for share repurchases Stock Repurchase Program, Remaining Authorized Repurchase Amount Schedule of Error Corrections and Prior Period Adjustment Restatement [Table] Schedule of Error Corrections and Prior Period Adjustment Restatement [Table] Adjustments for Error Corrections [Axis] Adjustments for Error Corrections [Axis] Adjustments for Error Correction [Domain] Adjustments for Error Correction [Domain] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Error Corrections and Prior Period Adjustments Restatement [Line Items] Error Corrections and Prior Period Adjustments Restatement [Line Items] Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Environmental Remediation Obligations [Abstract] Environmental Remediation Range of Future Costs [Table] Environmental Remediation Range of Future Costs [Table] Environmental Remediation Range of Future Costs, the amount accrued within the rang and the deferred costs expected to be recoverable through overhead charges on US Government contracts [Table] Environmental Remediation Range of Future Costs [Line Items] Environmental Remediation Range of Future Costs [Line Items] [Line Items] for Environmental Remediation Range of Future Costs, the amount accrued within the range and the deferred costs expected to be recoverable through overhead charges on US Government contracts [Table] Environmental Remediation [Table Text Block] Environmental Remediation [Table Text Block] Environmental Remediation Range of Possible Future Costs, Accrued Costs within that range and Deferred Cost expected to be recovered [Table Text Block] Share Repurchases Class of Treasury Stock [Table Text Block] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] United States UNITED STATES Asia/Pacific Asia Pacific [Member] All other (principally Europe and Middle East) All Other - Geographic Region [Domain] All Other - Geographic Region [Domain] Revenue, Geographic Location [Line Items] Revenues from External Customers and Long-Lived Assets [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2014-09 [Member] Accounting Standards Update 2014-09 [Member] Accounting Standards Update 2017-07 [Domain] Accounting Standards Update 2017-07 [Domain] Accounting Standards Update 2017-07 Compensation Retirement Benefits (Topic 715) Previously Reported [Member] Scenario, Previously Reported [Member] Restatement Adjustment [Member] Restatement Adjustment [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Interest and Debt Expense Earnings Per Share, Basic Weighted Average Number of Shares Outstanding, Basic Earnings Per Share, Diluted Weighted Average Number of Shares Outstanding, Diluted New Accounting Pronouncements and Changes in Accounting Principles [Abstract] New Accounting Pronouncements or Change in Accounting Principles [Table] Accounting Standards Update 2018-02 [Member] Accounting Standards Update 2018-02 [Member] Accounting Standards Update 2018-02 Income Statement - Reporting Comprehensive Income (Topic 220) Accounting Standards Update 2016-01 [Member] Accounting Standards Update 2016-01 [Member] Cumulative Effect Of New Accounting Principle In Period Of Adoption Cumulative Effect of New Accounting Principle in Period of Adoption Tax Cuts and Job Act, Income Tax Expense (Benefit) Tax Cuts and Job Act, Income Tax Expense (Benefit) Tax Cuts and Job Act, Income Tax Expense (Benefit) Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Unamortized benefit plan costs, net of tax benefit of $1,968 for 2018 and $3,056 for 2017 Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax Cumulative translation adjustment Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Other, net Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax And Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax The accumulated appreciation or loss, net of tax, in value of the total of unsold securities at the end of an accounting period and the accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's increase (decrease) in deferred hedging gains or losses. Total accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Unamortized benefit plan costs - Tax Benefit (expense) Unamortized benefit plan costs - Tax Benefit (expense) Amount of tax benefit (expense) related to the ending balance of unamortized benefit plan costs in accumulated other comprehensive income. Unamortized benefit plan costs, net actuarial losses, after-tax Accumulated Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Tax Unamortized benefit plan costs, reclassified from other comprehensive income to net earnings Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax STOCK COMPENSATION PLANS AND OTHER COMPENSATION ARRANGEMENTS Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Sales and operating income by segment Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Revenue by Major Customers by Reporting Segments [Table Text Block] Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block] Revenue from External Customers by Contract Type [Table Text Block] Reconciliation of Revenue from Segments to Consolidated [Table Text Block] Revenue from External Customers by Geographic Areas [Table Text Block] Revenue from External Customers by Geographic Areas [Table Text Block] Income Tax Contingency [Table] Income Tax Contingency [Table] Scenario, Forecast [Member] Scenario, Forecast [Member] Maximum [Member] Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] Decrease in Unrecognized Tax Benefits is Reasonably Possible Decrease in Unrecognized Tax Benefits is Reasonably Possible Tax Adjustments, Settlements, and Unusual Provisions Tax Adjustments, Settlements, and Unusual Provisions Effective Income Tax Rate Reconciliation, Amount [Abstract] Effective Income Tax Rate Reconciliation, Amount [Abstract] Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Effective Income Tax Rate Reconciliation, Tax Settlement, Amount Effective Income Tax Rate Reconciliation, Tax Settlement, Amount Effective Income Tax Rate Reconciliation, Increase in Research Tax Credits Effective Income Tax Rate Reconciliation, Increase in Research Tax Credits Effective Income Tax Rate Reconciliation, Increase in Research Tax Credits Income Tax Reconciliation, Deduction, Increase in Qualified Production Activity Effective Income Tax Rate Reconciliation, Deduction, Qualified Production Activity, Amount Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Schedule of Income Tax Expense and Effective Income Tax Rates Schedule of Income Tax Expense and Effective Income Tax Rates [Table Text Block] Schedule of Income Tax Expense and Effective Income Tax Rates [Table Text Block] Cash and cash equivalents Accounts receivable, net Accounts Receivable, Net, Current Inventoried costs, net Inventory, Net Prepaid expenses and other current assets Other Assets, Current Total current assets Assets, Current Property, plant and equipment, net of accumulated depreciation of $5,066 for 2017 Property, Plant and Equipment, Net Goodwill Goodwill Deferred tax assets Deferred Tax Assets, Net, Noncurrent Other non-current assets Other Assets, Noncurrent Total assets Assets Trade accounts payable Accounts Payable, Current Accrued employee compensation Employee-related Liabilities, Current Advance payments and amounts in excess of costs incurred Other current liabilities Other Liabilities, Current Total current liabilities Liabilities, Current Long-term debt, net of current portion of $867 for 2017 Long-term Debt and Capital Lease Obligations Pension and other post-retirement benefit plan liabilities Liability, Defined Benefit Plan, Noncurrent Other non-current liabilities Other Liabilities, Noncurrent Total liabilities Liabilities Commitments and Contingencies Commitments and Contingencies Preferred stock, $1 par value; 10,000,000 shares authorized; no shares issued and outstanding Preferred Stock, Value, Issued Common stock, $1 par value; 800,000,000 shares authorized; issues and outstanding: 2017 - 174,085,619 Common Stock, Value, Issued Paid-in capital Additional Paid in Capital, Common Stock Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Total shareholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and shareholders’ equity Liabilities and Equity Accounting Changes and Error Corrections [Text Block] Accounting Changes and Error Corrections [Text Block] Disclosure Text Block Supplement [Abstract] INVESTIGATIONS, CLAIMS AND LITIGATION Legal Matters and Contingencies [Text Block] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Recurring [Member] Fair Value, Measurements, Recurring [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Marketable Securities Marketable Securities Derivatives Derivative Assets (Liabilities), at Fair Value, Net Reconciliation of Revenue from Segments to Consolidated [Table] Reconciliation of Revenue from Segments to Consolidated [Table] Contract with Customer, Basis of Pricing [Axis] Contract with Customer, Basis of Pricing [Axis] Contract with Customer, Basis of Pricing [Domain] Contract with Customer, Basis of Pricing [Domain] Cost-type [Member] Time-and-materials Contract [Member] Fixed-price [Member] Fixed-price Contract [Member] Revenue, Contract Type [Line Items] Segment Reporting, Revenue Reconciling Item [Line Items] FAIR VALUE OF FINANCIAL INSTRUMENTS Fair Value Disclosures [Text Block] SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] Revenue from Contract with Customer [Abstract] Revenue, Remaining Performance Obligation Revenue, Remaining Performance Obligation Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Explanation Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Explanation Fair value information of assets and liabilities measured at fair value on a recurring basis Fair Value, by Balance Sheet Grouping [Table Text Block] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plan, Interest on Service Cost is reclassified to Interest Cost [Member] Defined Benefit Plan, Interest on Service Cost is reclassified to Interest Cost [Member] Defined Benefit Plan, Interest on Service Cost is reclassified to Interest Cost [Member] Defined Benefit Plan, Administrative Expenses of the Service Cost reclassified to Net Actuarial Loss [Member] Defined Benefit Plan, Administrative Expenses of the Service Cost reclassified to Net Actuarial Loss [Member] Defined Benefit Plan, Administrative Expenses of the Service Cost reclassified to Net Actuarial Loss [Member] Retirement Plan Type [Axis] Retirement Plan Type [Axis] Retirement Plan Type [Domain] Retirement Plan Type [Domain] Pension Benefits Pension Plan [Member] Medical and Life Benefits Other Postretirement Benefits Plan [Member] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Prior Period Reclassification Adjustment Prior Period Reclassification Adjustment Components of Net Periodic Benefit Cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Service cost Defined Benefit Plan, Service Cost Interest cost Defined Benefit Plan, Interest Cost Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Prior service credit Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Net loss from previous years Defined Benefit Plan, Amortization of Gain (Loss) Net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Defined benefit plan, contributions by Employer Defined Benefit Plan, Plan Assets, Contributions by Employer Defined Contribution Plan [Abstract] Defined Contribution Plan [Abstract] Defined contribution plan, employer contributions Defined Contribution Plan, Employer Discretionary Contribution Amount Statement of Financial Position [Abstract] Accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Long-term Debt, Current Maturities Long-term Debt, Current Maturities Preferred Stock, par value Preferred Stock, Par or Stated Value Per Share Preferred Stock, shares authorized Preferred Stock, Shares Authorized Preferred Stock, shares issued Preferred Stock, Shares Issued Preferred Stock, shares outstanding Preferred Stock, Shares Outstanding Common Stock, par value Common Stock, Par or Stated Value Per Share Common Stock, shares authorized Common Stock, Shares Authorized Common Stock, shares issued Common Stock, Shares, Issued Common Stock, shares outstanding Common Stock, Shares, Outstanding Assets Assets [Abstract] Cash and cash equivalents Property, plant and equipment, net of accumulated depreciation of $5,119 for 2018 and $5,066 for 2017 Goodwill Liabilities Liabilities [Abstract] Long-term debt, net of current portion of $868 for 2018 and $867 for 2017 Pension and other post-retirement benefit plan liabilities Commitments and contingencies Shareholders’ equity Stockholders' Equity Attributable to Parent [Abstract] Common stock, $1 par value; 800,000,000 shares authorized; issued and outstanding: 2018—174,382,256 and 2017—174,085,619 Environmental Matters Environmental Contingency [Table] Site Contingency [Table] Loss Contingencies by Nature of Contingency [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Environmental Issue [Member] Environmental Issue [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other Current Liabilities [Member] Other Current Liabilities [Member] Other Noncurrent Liabilities [Member] Other Noncurrent Liabilities [Member] Other Current Assets [Member] Other Current Assets [Member] Other Noncurrent Assets [Member] Other Noncurrent Assets [Member] Site Contingency [Line Items] Site Contingency [Line Items] Loss Contingency, Estimate of Possible Loss Loss Contingency, Estimate of Possible Loss Accrual for Environmental Remediation Costs Accrual for Environmental Loss Contingencies Recorded Third-Party Environmental Recoveries, Amount Recorded Third-Party Environmental Recoveries, Amount Financial Arrangements Other Commitments [Abstract] Standby Unused Letters Of Credit and bank guarantees Standby Unused Letters Of Credit and bank guarantees Financial instruments issued by a bank, on behalf of the company and in favor of a beneficiary, which substitutes the company's credit worthiness with that of the bank. Letters of Credit are usually issued in conformance with a set of governing rules. Surety Bond Outstanding Surety Bond Outstanding Surety Bond Outstanding Operating leases Leases, Operating [Abstract] Rental expense for operating leases, net of immaterial amounts of sublease rental income Operating Leases, Rent Expense Line of Credit Facility Line of Credit Facility [Abstract] Line of Credit Facility [Table] Line of Credit Facility [Table] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] London Interbank Offered Rate (LIBOR) [Member] London Interbank Offered Rate (LIBOR) [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Two Year Term [Member] [Domain] Two Year Term [Member] [Domain] Two Year Term [Member] [Domain] Five Year Term [Member] [Domain] Five Year Term [Member] [Domain] Five Year Term [Member] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Debt Instrument, Covenant Compliance Debt Instrument, Covenant Compliance Line of Credit Outstanding Long-term Line of Credit Line of Credit Facility, Interest Rate During Period Line of Credit Facility, Interest Rate During Period BASIS OF PRESENTATION Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Loss Contingencies [Table] Loss Contingencies [Table] Updated claim [Member] Updated claim [Member] Updated claim [Member] - Updated claim related to a litigation matter. Claim Amount [Axis] Claim Amount [Axis] Claim Amount [Axis] - Defines movements in claim amounts from litigation matters. Claim Amount [Domain] Claim Amount [Domain] [Domain] for Claim Amount [Axis] - Defines movements in claim amounts from litigation matters. Initial Claim [Member] Initial Claim [Member] Initial Claim [Member] - Amount of initial claim in a litigation matter. Incremental claim [Member] Incremental claim [Member] Incremental claim [Member] - Incremental claim related to a litigation matter. United States Postal Service United States Postal Service [Member] United States Postal Service [Member] Solystic Matter [Member] Solystic Matter [Member] Solystic Matter [Member] Gain Contingencies by Nature [Axis] Gain Contingencies, Nature [Axis] Gain Contingency, Nature [Domain] Gain Contingency, Nature [Domain] Unpaid Portions of Contract Price and Direct Costs Incurred [Member] Unpaid Portions of Contract Price and Direct Costs Incurred [Member] Unpaid Portions of Contract Price and Direct Costs Incurred [Member] Acts and Omissions with Adverse Affects on Performance and Obligations [Member] Acts and Omissions with Adverse Affects on Performance and Obligations [Member] Acts and Omissions with Adverse Affects on Performance and Obligations [Member] Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] False Claims Act False Claims Act [Member] False Claims Act [Member] Litigation Status [Axis] Litigation Status [Axis] Litigation Status [Domain] Litigation Status [Domain] Threatened Litigation Threatened Litigation [Member] Loss Contingencies Loss Contingencies [Line Items] Contract award Contract Award Total Contract Award Gain contingency, unrecorded amount Gain Contingency, Unrecorded Amount Loss Contingency, Damages Sought, Value Loss Contingency, Damages Sought, Value Counterclaim Counterclaim Counterclaim for damages sought Loss Contingency, Number of Additional Defendants Loss Contingency, Number of Defendants Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Accounting Standards Update 2018-02 and 2016-01 [Member] Statement, Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common stock Common Stock [Member] Paid-in capital Additional Paid-in Capital [Member] Retained earnings Retained Earnings [Member] Accumulated other comprehensive loss AOCI Attributable to Parent [Member] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning of year Impact from adoption of ASU 2018-02 and ASU 2016-01 Impact from adoption of ASU 2018-02 and ASU 2016-01 Accounting Standards Update 2018-02 Income Statement - Reprting Comprehensive Income (Topic 220) and 2016-01 Financial Statements (Topic 825) Common stock repurchased Stock Repurchased and Retired During Period, Value Dividends declared Dividends, Common Stock Stock compensation Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Other comprehensive income, net of tax End of period Cash dividends declared per share