XML 86 R71.htm IDEA: XBRL DOCUMENT
v3.22.4

Postretirement Benefit Plans - Amounts Recognized in Other Comprehensive Income (Loss) Related to Postretirement Benefit Plans, Net of Tax (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Actuarial gains and (losses) - Incurred but Not Yet Recognized in Net Periodic Benefit Cost | $ 2,022 | $ 3,405 | $ (1,066)
Net prior service credit and (cost) - Incurred but Not Yet Recognized in Net Periodic Benefit Cost | (149) | (1) | (1)
Incurred but Not Yet Recognized in FAS Expense | 1,873 | 3,404 | (1,067)
Actuarial gains and (losses) - Recognition of Previously Deferred Amounts | (1,493) | (2,043) | (689)
Amortization of actuarial losses and prior service credits, net of tax of $18 million in 2022, $130 million in 2021 and $119 million in 2020 | 268 | 256 | 249
Recognition of Previously Deferred Amounts | (1,225) | (1,787) | (440)
Qualified defined benefit pension plans |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Actuarial gains and (losses) - Incurred but Not Yet Recognized in Net Periodic Benefit Cost | 1,952 | 2,987 | (1,005)
Net prior service credit and (cost) - Incurred but Not Yet Recognized in Net Periodic Benefit Cost | (146) | (1) | (7)
Actuarial gains and (losses) - Recognition of Previously Deferred Amounts | (1,490) | (2,019) | (668)
Amortization of actuarial losses and prior service credits, net of tax of $18 million in 2022, $130 million in 2021 and $119 million in 2020 | 283 | 274 | 269
Retiree medical and life insurance plans |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Actuarial gains and (losses) - Incurred but Not Yet Recognized in Net Periodic Benefit Cost | (95) | 342 | 43
Net prior service credit and (cost) - Incurred but Not Yet Recognized in Net Periodic Benefit Cost | (1) | 0 | 6
Actuarial gains and (losses) - Recognition of Previously Deferred Amounts | 36 | 0 | 3
Amortization of actuarial losses and prior service credits, net of tax of $18 million in 2022, $130 million in 2021 and $119 million in 2020 | (22) | (29) | (30)
Other plans |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Actuarial gains and (losses) - Incurred but Not Yet Recognized in Net Periodic Benefit Cost | 165 | 76 | (104)
Net prior service credit and (cost) - Incurred but Not Yet Recognized in Net Periodic Benefit Cost | (2) | 0 | 0
Actuarial gains and (losses) - Recognition of Previously Deferred Amounts | (39) | (24) | (24)
Amortization of actuarial losses and prior service credits, net of tax of $18 million in 2022, $130 million in 2021 and $119 million in 2020 | $ 7 | $ 11 | $ 10

X
- Definition Other Comprehensive (Income) Loss, Defined Benefit Plan, Net Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax + References No definition available. + Details
Name: | lmt_OtherComprehensiveIncomeLossDefinedBenefitPlanNetPriorServiceCostCreditReclassificationAdjustmentFromAOCIAfterTax
Namespace Prefix: | lmt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Excluding Discontinued Operations, Net of Tax + References No definition available. + Details
Name: | lmt_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAociPensionAndOtherPostretirementBenefitPlansExcludingDiscontinuedOperationsNetOfTax
Namespace Prefix: | lmt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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_AccumulatedOtherComprehensiveIncomeLossLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after tax, of cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (j) -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669646-108580 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=126968391&loc=d3e637-108580 + Details
Name: | us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, after tax, of gain (loss) for (increase) decrease in value of benefit obligation for change in actuarial assumptions and increase (decrease) in value of plan assets from experience different from that assumed of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i) -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669646-108580 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=126968391&loc=d3e637-108580 + Details
Name: | us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, after tax, before reclassification adjustment, of (increase) decrease in accumulated other comprehensive income of defined benefit plan, that has not been recognized in net periodic benefit cost (credit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=126968391&loc=d3e637-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i-k) -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669646-108580 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, after tax, of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 17A -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL34724391-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=126968391&loc=d3e637-108580 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI https://asc.fasb.org/extlink&oid=126968391&loc=d3e689-108580 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_OtherPensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |