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Debt - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 9 Months Ended
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Sep. 28, 2014
Debt Outstanding [Line Items] |
Percentage of owned subsidiaries guaranteed | 100.00%
European Businesses [Member] |
Debt Outstanding [Line Items] |
Line of Credit Facility, Remaining Borrowing Capacity | $ 265
Commercial Paper |
Debt Outstanding [Line Items] |
Percentage of owned subsidiaries guaranteed | 100.00%
Line of Credit Facility, Remaining Borrowing Capacity | 2,000
Commercial Paper | Multi-Year Facility Expiring July 2018 |
Debt Outstanding [Line Items] |
Line of credit facility, expiration date | 2018-07
Line of Credit Facility, Remaining Borrowing Capacity | 1,000
Commercial Paper | Multi-Year Facility, Expiring July 2016 |
Debt Outstanding [Line Items] |
Line of credit facility, expiration date | 2016-07
Line of Credit Facility, Remaining Borrowing Capacity | $ 1,000

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- Details
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- Definition Line of Credit Facility Expiration Dates + References No definition available. + Details
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- Definition Percentage Of Owned Subsidiaries Guaranteed Fixed Rate Notes + References No definition available. + Details
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Namespace Prefix: | gd_
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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Balance Type: | credit
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