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.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
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-Section 50
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 720
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-Section 50
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Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Topic 460
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
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-Section 50
-Paragraph 4
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-URI https://asc.fasb.org/1943274/2147483076/450-20-50-4

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
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-Publisher FASB
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
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-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

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Investigations, Claims, And Litigation (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) numberOfReinsurers frigates	Dec. 31, 2023 USD ($)
Loss Contingencies
Loss Contingency, Number of Defendants \| numberOfReinsurers	32
Mission Technologies [Member]
Loss Contingencies
Proceeds from Legal Settlements		$ 49.5
Arbitration [Member]
Loss Contingencies
Loss Contingency, Number of Defendants \| numberOfReinsurers	6
Bolivarian Republic of Venezuela [Member]
Loss Contingencies
Number of foreign-built frigates \| frigates	2
Arbitration Claim	$ 151.0
Bolivarian Republic of Venezuela [Member] \| Ingalls [Member]
Loss Contingencies
Proceeds from Sale of Arbitration Claim	70.5
Litigation counter claim [Member] \| Bolivarian Republic of Venezuela [Member]
Loss Contingencies
Arbitration Claim	$ 22.0