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Goodwill And Other Intangible Assets, Net (Schedule Of Aggregate Goodwill And Other Intangible Assets) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Goodwill [Line Items]      
Identifiable intangible asset, net $ 520,886 $ 513,646  
Accumulated amortization 257,140 200,053  
Amortized cost 263,746 313,593  
Amortization expenses 56,952 47,729 42,601
C4 Security [Member]
      
Goodwill [Line Items]      
Business acquisition purchase price 3,800    
M7 [Member]
      
Goodwill [Line Items]      
Business acquisition purchase price   13,800  
Soltam ITL Optronics Ltd And Saymar [Member]
      
Goodwill [Line Items]      
Business acquisition purchase price   28,200  
Tadiran [Member]
      
Goodwill [Line Items]      
Business acquisition purchase price 70,300    
Technology [Member]
      
Goodwill [Line Items]      
Identifiable intangible asset, net 254,668 [1] 248,868 [1]  
Accumulated amortization 120,988 98,814  
Finite lived intangible assets, weighted average useful life, years 12 [1]    
Simulation And Debriefing Systems [Member]
      
Goodwill [Line Items]      
Business acquisition purchase price     7,400
Technology For Broadband Communications [Member]
      
Goodwill [Line Items]      
Business acquisition purchase price     8,200
Customer Relations [Member]
      
Goodwill [Line Items]      
Identifiable intangible asset, net 201,346 [2] 200,336 [2]  
Accumulated amortization 115,284 86,166  
Finite lived intangible assets, weighted average useful life, years 6 [2]    
Customer Relations [Member] | Tadiran [Member]
      
Goodwill [Line Items]      
Identifiable intangible asset, net 137,300    
Customer Relations [Member] | FTL [Member]
      
Goodwill [Line Items]      
Identifiable intangible asset, net 9,000    
Trade Marks And Other [Member]
      
Goodwill [Line Items]      
Identifiable intangible asset, net 64,872 [3] 64,442 [3]  
Accumulated amortization 20,868 15,073  
Finite lived intangible assets, weighted average useful life, years 14 [3]    
Trade Marks And Other [Member] | Tadiran [Member]
      
Goodwill [Line Items]      
Identifiable intangible asset, net 33,200    
Trade Marks And Other [Member] | Elop [Member]
      
Goodwill [Line Items]      
Identifiable intangible asset, net $ 8,000    
[1] The technology acquired consists of the following major items: During 2011, the Company invested $3,800 in technology related to cyber security and warfare, following the acquisition of C4 (see Note 1(D)(4)). During 2010, the Company invested $13,800 in aerospace technology related to the M7 acquisition (See Note 1(E)(4)) and $28,200 in armored vehicles electro-optics technologies related to the acquisition of Soltam, ITL and Saymar (See Note 1(E)(2)). During 2009, the Company invested $7,400 in technology related to simulation and debriefing systems and $8,200 in technology for broadband communications (See Note 1(F)). An amount of $70,300 was allocated to technology related to communication equipment and C4ISR, in connection with the acquisition of Tadiran's shares in 2005 - 2007.
[2] Includes mainly customer relations resulting from the acquisition of Tadiran ($137,300) and FTL ($9,000) in 2007.
[3] Includes trademarks in the amount of $8,000 acquired in the merger with Elop in 2000, and an amount of $33,200 that was allocated to trademarks resulting mainly from the acquisition of Tadiran in 2005 - 2007.