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Major Customer And Geographic Information (Schedule Of Revenues By Areas Of Operations) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Revenue from External Customer [Line Items] |  |  |  |  |  |
Revenue | $ 2,888,607 |  | $ 2,817,465 |  | $ 2,670,133 |
Airborne Systems [Member] |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |
Revenue | 1,054,468 |  | 969,446 |  | 791,111 |
Land Vehicles Systems [Member] |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |
Revenue | 374,487 |  | 405,294 |  | 363,245 |
C4 ISR Systems [Member] |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |
Revenue | 1,017,638 |  | 996,382 |  | 1,019,068 |
Electro-Optic Systems [Member] |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |
Revenue | 324,135 |  | 300,158 |  | 368,808 |
Others [Member] |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |
Revenue | $ 117,879 | [1] | $ 146,185 | [1] | $ 127,901 | [1]
[1] | Mainly non-defense engineering and production services.

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- Definition Amount of revenue from external customers for the business line. Such disclosure is presented if the amount is: (a) included in the measure of business line profit or loss reviewed by the chief operating decision maker or (b) otherwise regularly provided to the chief operating decision maker, even if not included in that measure of business line profit or loss. + References No definition available. + Details
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Namespace Prefix: | eslt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration