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Income Taxes (Details)	6 Months Ended
Income Taxes (Details)	Jun. 30, 2012	Jun. 30, 2011
Income Taxes [Line Items]
Effective tax rates	26.30%	26.50%
Excluding Retroactive Benefit Related To Tax Holidays [Member]
Income Taxes [Line Items]
Effective tax rates		29.50%

- Definition

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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