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Derivative Financial Instruments (Notional Amounts Of Outstanding Foreign Exchange Forward Contracts) (Details) (Forward Contracts [Member], USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
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Derivative [Line Items] |  |
Notional amount of foreign currency derivative purchase contracts | $ 496,288 | $ 756,068
Notional amount of foreign currency derivative sale contracts | 174,835 | 233,466
Euro |  |
Derivative [Line Items] |  |
Notional amount of foreign currency derivative purchase contracts | 60,665 | 57,022
Notional amount of foreign currency derivative sale contracts | 131,696 | 154,251
GBP [Member] |  |
Derivative [Line Items] |  |
Notional amount of foreign currency derivative purchase contracts | 45,262 | 30,868
Notional amount of foreign currency derivative sale contracts | 28,268 | 45,095
NIS [Member] |  |
Derivative [Line Items] |  |
Notional amount of foreign currency derivative purchase contracts | 386,017 | 654,105
Other Currency [Member] |  |
Derivative [Line Items] |  |
Notional amount of foreign currency derivative purchase contracts | 4,344 | 14,073
Notional amount of foreign currency derivative sale contracts | $ 14,871 | $ 34,120

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- Definition Aggregate notional amount of foreign currency derivatives to purchase a foreign currency. Notional amount refers to the number of currency units specified in the foreign currency derivative contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Notional Amount -URI http://asc.fasb.org/extlink&oid=6519104 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959 + Details
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- Definition Aggregate notional amount of foreign currency derivatives to sell a foreign currency. Notional amount refers to the number of currency units specified in the foreign currency derivative contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Notional Amount -URI http://asc.fasb.org/extlink&oid=6519104 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959 + Details
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