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Major Customer And Geographic Information (Schedule Of Revenue By Geographic Areas) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Revenues By Area Of Operations [Line Items] |  |  |  |  |  |
Revenues | $ 2,817,465 |  | $ 2,670,133 |  | $ 2,832,437 |
Europe [Member] |  |  |  |  |  |
Revenues By Area Of Operations [Line Items] |  |  |  |  |  |
Revenues | 545,509 |  | 541,749 |  | 728,232 |
U.S. [Member] |  |  |  |  |  |
Revenues By Area Of Operations [Line Items] |  |  |  |  |  |
Revenues | 890,352 |  | 843,985 |  | 813,460 |
Israel [Member] |  |  |  |  |  |
Revenues By Area Of Operations [Line Items] |  |  |  |  |  |
Revenues | 697,771 |  | 650,956 |  | 627,251 |
Other Regions [Member] |  |  |  |  |  |
Revenues By Area Of Operations [Line Items] |  |  |  |  |  |
Revenues | $ 683,833 | [1] | $ 633,443 | [1] | $ 663,494 | [1]
[1] | Mainly Asia and South America

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- Definition Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 5 -Section 03 -Paragraph 1 Reference 2: 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=6880815&loc=d3e20235-122688 + Details
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