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Property, Plant And Equipment, Net (Schedule Of Property, Plant And Equipment, Net) (Details) (USD $) In Thousands, unless otherwise specified |  |  |  |  |  |  |  |  |  |  | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2012 Land, Buildings And Leasehold Improvements [Member] | Dec. 31, 2011 Land, Buildings And Leasehold Improvements [Member] | Dec. 31, 2012 Instruments, Machinery And Equipment [Member] | Dec. 31, 2011 Instruments, Machinery And Equipment [Member] | Dec. 31, 2012 Office Furniture And Other [Member] | Dec. 31, 2011 Office Furniture And Other [Member] | Dec. 31, 2012 Motor Vehicles And Airplanes [Member] | Dec. 31, 2011 Motor Vehicles And Airplanes [Member] | Dec. 31, 2012 Israel [Member] sqft | Dec. 31, 2012 U.S. [Member] sqft | Dec. 31, 2012 Other Countries [Member] sqft
Property, Plant and Equipment, Net [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment, gross | $ 1,243,744 | [1] | $ 1,198,581 | [1] | $ 373,286 | [1],[2] | $ 361,246 | [1],[2] | $ 641,911 | [1],[3] | $ 629,290 | [1],[3] | $ 95,080 | [1] | $ 76,939 | [1] | $ 133,467 | [1] | $ 131,106 | [1] |  |  |  |  |  |
Accumulated depreciation | (742,458) |  | (680,973) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Depreciated cost | $ 501,286 |  | $ 517,608 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real estate owned, square feet |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,158,000 | [4] | 710,000 | [5] | 891,000 | [6]
Real estate leased, square feet |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,896,000 | [4] | 631,000 | [5] | 303,000 | [6]
[1] | Net of investment grants received (mainly for instruments, machinery and equipment) in the amounts of $36,990 and $29,367 as of December 31, 2012 and 2011, respectively.
[2] | Set forth below is additional information regarding the real estate owned or leased by the Company (in square feet):
[3] | Includes equipment produced by the Company for its own use in the aggregate amount of $239,758 and $173,649 as of December 31, 2012 and 2011, respectively.
[4] | Includes offices, development and engineering facilities, manufacturing facilities, maintenance facilities, hangar facilities and a landing strip in various locations in Israel used by Elbit Systems' Israeli subsidiaries.
[5] | Includes offices, development and engineering facilities, manufacturing facilities and maintenance facilities of Elbit Systems of America primarily in Texas, New Hampshire, Florida, Alabama and Virginia.
[6] | Includes offices, design and engineering facilities and manufacturing facilities, mainly in Europe, Brazil, Australia and Asia.

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- Definition The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 14 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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- Definition Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 12 -Paragraph 5 -Subparagraph b, c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 + Details
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