Derivative Instruments And Hedging Activities (Impact Of Derivative Instruments On Statements Of Income And OCI) (Details) (USD $) In Thousands	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	3 Months Ended	6 Months Ended
Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2011 Treasury Locks, Net Of Tax [Member]	Dec. 31, 2010 Treasury Locks, Net Of Tax [Member]	Jun. 30, 2011 Foreign Currency Exchange Contracts, Net Of Tax [Member]	Dec. 31, 2010 Foreign Currency Exchange Contracts, Net Of Tax [Member]	Jun. 30, 2011 Interest Expense, Net [Member]	Jun. 30, 2010 Interest Expense, Net [Member]	Jun. 30, 2011 Interest Expense, Net [Member]	Jun. 30, 2010 Interest Expense, Net [Member]
Amount of Net Gain (Loss) Recognized in Accumulated OCI (Effective Portion)	$ 6,716	$ 1,557	$ 7,121	$ 2,164	$ (405)	$ (607)
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)							$ 461	$ 461	$ 923	$ 923

The income statement location of the effective portion of net gain or loss reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 205G

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44C
-Subparagraph b
-Clause 3

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