XML 63 R51.htm IDEA: XBRL DOCUMENT
v3.26.1

Unbilled Receivables - Additional Information (Details) - USD ($) $ in Millions | Apr. 05, 2026 | Dec. 31, 2025
--- | --- | ---
Contracts In Process [Line Items] |  |
Net unbilled receivables | $ 9,051 | $ 8,380
Combat Systems | Large International Contract |  |
Contracts In Process [Line Items] |  |
Net unbilled receivables | $ 1,300 | $ 1,300

X
- Definition Contracts In Process [Line Items] + References No definition available. + Details
Name: | gd_ContractsInProcessLineItems
Namespace Prefix: | gd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer. + References No definition available. + Details
Name: | us-gaap_UnbilledReceivablesCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Details
Name: | srt_MajorCustomersAxis=gd_LargeInternationalCustomerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |