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Acquisitions and Divestitures - Additional Information (Detail) - USD ($) |  |  |  | 2 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Aug. 24, 2016 | Aug. 16, 2016 | Nov. 06, 2015 | Dec. 31, 2015 | Dec. 31, 2016 | Sep. 25, 2016 | Dec. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Nov. 23, 2015
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions of businesses and investments in affiliates |  |  |  |  |  |  |  |  | $ 9,003,000,000 | $ 898,000,000 |  |
Proceeds from borrowings under revolving credit facilities |  |  |  |  |  |  |  |  | 6,000,000,000 |  |  |
Proceeds from issuance of fixed interest-rate long-term notes |  |  |  |  |  |  |  |  | 9,101,000,000 |  |  |
Aggregate amount of goodwill arising from acquisitions |  |  |  | $ 10,695,000,000 | $ 10,764,000,000 |  | $ 10,695,000,000 | $ 10,764,000,000 | 10,695,000,000 | 7,964,000,000 | [1] |
Non-recoverable transaction costs |  |  |  |  |  |  |  |  | 38,000,000 |  |  |
Income tax charge related to historic earnings of foreign subsidiaries |  |  |  | 310,000,000 | 386,000,000 |  | 310,000,000 | 386,000,000 | 310,000,000 | 249,000,000 |  |
Amortization of intangible assets |  |  |  |  |  |  |  | 284,000,000 | 68,000,000 | 20,000,000 |  |
Gain on step acquisition of AWE, net of tax |  |  |  |  |  |  |  | 104,000,000 |  |  |  |
One-time special cash payment received from Abacus |  | $ 1,800,000,000 |  |  |  |  |  | 1,800,000,000 |  |  |  |
Net gain on divestiture of business segment |  |  |  |  |  |  |  | 1,242,000,000 |  |  |  |
Fair value of shares of common stock tendered and retired |  |  |  |  |  |  |  | 2,497,000,000 |  |  |  |
Severance charges |  |  |  |  |  |  |  | 99,000,000 | 102,000,000 |  |  |
Net deferred tax (benefit) |  |  |  |  |  |  |  | (231,000,000) | (473,000,000) | (351,000,000) |  |
Space Systems |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Aggregate amount of goodwill arising from acquisitions |  |  |  | 1,588,000,000 | 1,585,000,000 |  | 1,588,000,000 | 1,585,000,000 | 1,588,000,000 | 1,590,000,000 | [1] |
November 2015 Notes |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Amount of issued debt |  |  |  |  |  |  |  |  |  |  |  | $ 7,000,000,000
Abacus | Term Loan Facilities |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Amount of issued debt |  | $ 1,840,000,000 |  |  |  |  |  |  |  |  |  |
Information Systems & Global Solutions |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Percentage of reduction in common stock outstanding |  | 3.00% |  |  |  |  |  |  |  |  |  |
Net gain on divestiture of business segment |  | $ 1,242,000,000 |  |  |  |  |  |  |  |  |  |
Fair value of shares of common stock tendered and retired |  | 2,500,000,000 |  |  |  |  |  |  |  |  |  |
Net book value |  | 3,000,000,000 |  |  |  |  |  |  |  |  |  |
Other adjustments |  | $ 100,000,000 |  |  |  |  |  |  |  |  |  |
Information Systems & Global Solutions | Lockheed Martin |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of common stock exchanged |  | 9,369,694 |  |  |  |  |  |  |  |  |  |
Information Systems & Global Solutions | Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Severance charges |  |  |  |  |  |  |  | 19,000,000 | 20,000,000 |  |  |
Information Systems & Global Solutions | Continuing Operations |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Pension costs |  |  |  |  |  |  |  | 54,000,000 | 71,000,000 | 59,000,000 |  |
Information Systems & Global Solutions | Restatement Adjustment |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Corporate overhead costs |  |  |  |  |  |  |  | (82,000,000) | (165,000,000) | (169,000,000) |  |
Lockheed Martin Commercial Flight Training | Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Asset impairment charges |  |  |  |  |  |  |  |  | 90,000,000 |  |  |
Net deferred tax (benefit) |  |  |  |  |  |  |  |  | (80,000,000) |  |  |
Reduction in net earnings |  |  |  |  |  |  |  |  | 10,000,000 |  |  |
Sikorsky Aircraft Corporation |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions of businesses and investments in affiliates |  |  | $ 9,000,000,000 |  |  |  |  |  |  |  |  |
Cash on hand |  |  | 2,000,000,000 |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Commercial Paper |  |  | $ 1,000,000,000 |  |  |  |  |  |  |  |  |
Repayment of commercial paper |  |  |  |  |  |  | 1,000,000,000 |  |  |  |  |
Goodwill |  |  |  |  | 78,000,000 |  |  |  |  |  |  |
Inventories |  |  |  |  | (185,000,000) |  |  |  |  |  |  |
Acquired intangible assets, weighted average period of amortization |  |  | 15 years |  |  |  |  |  |  |  |  |
Customer contractual obligations |  |  | $ 507,000,000 |  |  |  |  |  |  |  |  |
Customer contractual obligations due in 2017 |  |  |  |  | 110,000,000 |  |  | 110,000,000 |  |  |  |
Customer contractual obligations due in 2018 |  |  |  |  | 70,000,000 |  |  | 70,000,000 |  |  |  |
Customer contractual obligations due in 2019 |  |  |  |  | 70,000,000 |  |  | 70,000,000 |  |  |  |
Customer contractual obligations due in 2020 |  |  |  |  | 60,000,000 |  |  | 60,000,000 |  |  |  |
Customer contractual obligations due in 2021 |  |  |  |  | 40,000,000 |  |  | 40,000,000 |  |  |  |
Customer contractual obligations due after 2021 |  |  |  |  | 27,000,000 |  |  | 27,000,000 |  |  |  |
Sales related to customer contractual obligations, to date |  |  |  |  | 130,000,000 |  |  | $ 130,000,000 |  |  |  |
Aggregate amount of goodwill arising from acquisitions |  |  | 2,842,000,000 |  |  |  |  |  |  |  |  |
Net sales |  |  |  | 400,000,000 |  |  |  |  |  |  |  |
Operating profit |  |  |  | (45,000,000) |  |  |  |  |  |  |  |
Costs associated with issuance of fixed interest-rate long-term notes |  |  |  | 48,000,000 |  |  |  |  |  |  |  |
Net liabilities |  |  | 2,989,000,000 |  |  |  |  |  |  |  |  |
Sikorsky Aircraft Corporation | Three Hundred And Sixty Four Day Revolving Credit Facility And Five Year Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from borrowings under revolving credit facilities |  |  | 6,000,000,000 |  |  |  |  |  |  |  |  |
Non-recoverable transaction costs |  |  |  | 38,000,000 |  |  |  |  |  |  |  |
Sikorsky Aircraft Corporation | November 2015 Notes |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of fixed interest-rate long-term notes |  |  |  |  |  |  | 7,000,000,000 |  |  |  |  |
Sikorsky Aircraft Corporation | Pro Forma Adjustment |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Pension curtailment loss |  |  |  |  |  |  |  |  | 72,000,000 |  |  |
Income tax charge related to historic earnings of foreign subsidiaries |  |  |  | $ 58,000,000 |  |  | $ 58,000,000 |  | 58,000,000 |  |  |
Amortization of intangible assets |  |  |  |  |  |  |  |  | 125,000,000 | 150,000,000 |  |
Interest expense, debt |  |  |  |  |  |  |  |  | 40,000,000 | 50,000,000 |  |
Sikorsky Aircraft Corporation | Unaudited Supplemental Pro Forma Financial Information |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Increase in interest expense, net of tax |  |  |  |  |  |  |  |  | $ 110,000,000 | $ 120,000,000 |  |
Sikorsky Aircraft Corporation | Trademarks |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  | 71,000,000 |  |  |  |  |  |  |
Aggregate amount allocated to other intangibles arising from acquisitions |  |  | 887,000,000 |  |  |  |  |  |  |  |  |
Sikorsky Aircraft Corporation | Customer Programs |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  | 57,000,000 |  |  |  |  |  |  |
Aggregate amount allocated to other intangibles arising from acquisitions |  |  | $ 3,184,000,000 |  |  |  |  |  |  |  |  |
AWE Management Limited |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  | 307,000,000 | $ 103,000,000 |  |  |  |  |  |
Operating profit |  |  |  |  | $ 2,900,000 | 104,000,000 |  |  |  |  |  |
Ownership interest percentage acquired | 18.00% |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Parent | 51.00% |  |  |  |  |  |  |  |  |  |  |
Net liabilities | $ 32,000,000 |  |  |  |  |  |  |  |  |  |  |
Business combination, acquisition of less than 100 percent, noncontrolling interest, fair value | 107,000,000 |  |  |  |  |  |  |  |  |  |  |
AWE Management Limited | Net Sales | Segment Concentration Risk | Space Systems |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Concentration percentage |  |  |  |  |  |  |  | 100.00% |  |  |  |
AWE Management Limited | Net Sales | Equity Method Investment Risk | Space Systems |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Concentration percentage |  |  |  |  |  |  |  | 0.00% |  |  |  |
AWE Management Limited | Operating profit | Segment Concentration Risk | Space Systems |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Concentration percentage |  |  |  |  |  |  |  | 51.00% |  |  |  |
AWE Management Limited | Net Earnings | Equity Method Investment Risk | Space Systems |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Concentration percentage |  |  |  |  |  |  |  | 33.00% |  |  |  |
AWE Management Limited | Other income, net |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Gain on step acquisition of AWE, net of tax |  |  |  |  |  | 104,000,000 |  |  |  |  |  |
Pre tax gain on step acquisition of AWE |  |  |  |  |  | 127,000,000 |  |  |  |  |  |
Tax on gain on step acquisition of AWE |  |  |  |  |  | $ 23,000,000 |  |  |  |  |  |
AWE Management Limited | Customer relationships |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets | $ 243,000,000 |  |  |  |  |  |  |  |  |  |  |
Acquired finite-lived intangible assets are amortized | 8 years |  |  |  |  |  |  |  |  |  |  |
Zeta |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Acquired intangible assets, weighted average period of amortization |  |  |  |  |  |  |  |  |  | 10 years |  |
Aggregate amount of goodwill arising from acquisitions |  |  |  |  |  |  |  |  |  | $ 290,000,000 |  |
Aggregate amount allocated to other intangibles arising from acquisitions |  |  |  |  |  |  |  |  |  | 100 |  |
Business Acquisitions |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions And Divestitures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Aggregate amount of goodwill arising from acquisitions |  |  |  |  |  |  |  |  |  | 370,000,000 |  |
Aggregate amount allocated to other intangibles arising from acquisitions |  |  |  |  |  |  |  |  |  | $ 125,000,000 |  |
[1] | Includes reclassifications of goodwill among our business segments as a result of our program realignment, which occurred during the fourth quarter of 2015 (see "Note 1 - Significant Accounting Policies").

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- Definition The charge against earnings in the period for known and estimated costs of termination benefits provided to current employees that are voluntarily and involuntarily terminated under a benefit arrangement associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding costs or losses pertaining to an entity newly acquired in a business combination or a discontinued operation as defined by generally accepted accounting principles and costs associated with one-time termination benefits. + References No definition available. + Details
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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=73531572&loc=d3e1043-128460 + Details
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- Definition This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
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- Definition This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to inventory acquired in connection with a business combination for which the initial accounting was incomplete. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 4A -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=SL65897772-128472 + Details
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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=73531372&loc=d3e2207-128464 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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- Definition Amount of liabilities assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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- Definition Indirect expenses and cost incurred associated with goods produced and sold during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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