XML 74 R56.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Information on Business Segments - Total Assets and Customer Advances and Amounts In Excess Of Costs Incurred For Each Business Segment (Detail) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Assets | $ 46,521 | $ 47,806
Customer advances and amounts in excess of costs incurred | 6,752 | 6,776
Aeronautics |  |
Segment Reporting Information [Line Items] |  |
Customer advances and amounts in excess of costs incurred | 2,752 | 2,133
Missiles and Fire Control |  |
Segment Reporting Information [Line Items] |  |
Customer advances and amounts in excess of costs incurred | 1,268 | 1,517
Rotary and Mission Systems |  |
Segment Reporting Information [Line Items] |  |
Customer advances and amounts in excess of costs incurred | 2,288 | 2,590
Space |  |
Segment Reporting Information [Line Items] |  |
Customer advances and amounts in excess of costs incurred | 444 | 536
Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Assets | 35,769 | 35,513
Operating Segments | Aeronautics |  |
Segment Reporting Information [Line Items] |  |
Assets | 7,903 | 7,896
Operating Segments | Missiles and Fire Control |  |
Segment Reporting Information [Line Items] |  |
Assets | 4,395 | 4,000
Operating Segments | Rotary and Mission Systems |  |
Segment Reporting Information [Line Items] |  |
Assets | 18,235 | 18,367
Operating Segments | Space |  |
Segment Reporting Information [Line Items] |  |
Assets | 5,236 | 5,250
Corporate activities |  |
Segment Reporting Information [Line Items] |  |
Assets | $ 10,752 | $ 12,293

X
- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(12)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(11)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_Assets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The current portion of prepayments received from customers for goods or services to be provided in the future. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_CustomerAdvancesCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=lmt_AeronauticsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=lmt_MissilesAndFireControlMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=lmt_RotaryAndMissionSystemsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=lmt_SpaceSystemsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_CorporateNonSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |