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Income Taxes (Policies)	6 Months Ended
Income Taxes (Policies)	Jun. 30, 2012
Income Tax Disclosure [Abstract]
Income Tax Rate	Our quarterly income tax (provision) benefit for income taxes is measured using an estimated annual effective tax rate for the period, adjusted for discrete items that occurred within the periods presented.

Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.

+ References

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