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Summary Of Significant Accounting Policies (Policy)
12 Months Ended
Dec. 31, 2011
Summary Of Significant Accounting Policies [Abstract]  
Principles Of Consolidation
Cash And Cash Equivalents
Investments
Inventories
Property, Plant And Equipment
Goodwill And Other Intangible Assets
Impairment Of Long-Lived Assets
Earnings Per Share
Revenue Recognition
Income Taxes
Stock-Based Compensation
Use Of Estimates
Fair Values Of Financial Instruments
Foreign Currency