XML 62 R49.htm IDEA: XBRL DOCUMENT v3.10.0.1

Revenue - Revenue by Products and Services (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Revenue [Line Items]
Revenue	$ 9,186	$ 7,675	$ 16,721	$ 15,116
Aerospace
Revenue [Line Items]
Revenue	1,895	2,078	3,720	4,152
Aerospace | Aircraft manufacturing and completions
Revenue [Line Items]
Revenue	1,362	1,600	2,728	3,229
Aerospace | Aircraft services
Revenue [Line Items]
Revenue	531	445	982	880
Aerospace | Pre-owned aircraft
Revenue [Line Items]
Revenue	2	33	10	43
Combat Systems
Revenue [Line Items]
Revenue	1,534	1,414	2,974	2,701
Combat Systems | Wheeled combat and tactical vehicles
Revenue [Line Items]
Revenue	644	566	1,269	1,126
Combat Systems | Weapons systems, armament and munitions
Revenue [Line Items]
Revenue	443	409	826	755
Combat Systems | Tanks and tracked vehicles
Revenue [Line Items]
Revenue	346	278	677	525
Combat Systems | Engineering and other services
Revenue [Line Items]
Revenue	101	161	202	295
Information Technology
Revenue [Line Items]
Revenue	2,442	1,052	3,580	2,110
Information Technology | Information technology services
Revenue [Line Items]
Revenue	2,442	1,052	3,580	2,110
Mission Systems
Revenue [Line Items]
Revenue	1,147	1,052	2,245	2,140
Mission Systems | Platform systems and sensors
Revenue [Line Items]
Revenue	383	393	774	783
Mission Systems | Intelligence, surveillance and reconnaissance systems
Revenue [Line Items]
Revenue	372	333	749	662
Mission Systems | Communication systems
Revenue [Line Items]
Revenue	392	326	722	695
Marine Systems
Revenue [Line Items]
Revenue	2,168	2,079	4,202	4,013
Marine Systems | Nuclear - powered submarines
Revenue [Line Items]
Revenue	1,438	1,342	2,734	2,546
Marine Systems | Surface combatants
Revenue [Line Items]
Revenue	276	254	541	501
Marine Systems | Auxiliary and commercial ships
Revenue [Line Items]
Revenue	197	155	415	298
Marine Systems | Repair and other services
Revenue [Line Items]
Revenue	$ 257	$ 328	$ 512	$ 668

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

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ 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 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

Name:	us-gaap_Revenues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=gd_AerospaceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=gd_AircraftManufacturingandCompletionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=gd_AircraftServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=gd_PreOwnedAircraftMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	us-gaap_ProductOrServiceAxis=gd_WheeledCombatVehiclesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=gd_WeaponsSystemsandMunitionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=gd_TanksandTrackedVehiclesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=gd_EngineeringandOtherServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=gd_InformationTechnologyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=gd_InformationTechnologyServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=gd_MissionSystemsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=gd_PlatformsystemsandsensorsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=gd_IntelligencesurveillanceandreconnaissancesystemsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=gd_CommunicationSystemsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=gd_MarineSystemsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=gd_NuclearPoweredSubmarinesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=gd_SurfaceCombatantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=gd_AuxiliaryandCommercialShipsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=gd_RepairandOtherServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: