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Recently Issued Accounting Pronouncements (Policies)
6 Months Ended
Jun. 30, 2011
Recently Issued Accounting Pronouncements (Policies) [Abstract]  
Revenue recognition policy
    The Financial Accounting Standards Board (FASB) issued authoritative guidance that will eliminate the current option to report other comprehensive income in the statement of changes in equity. An entity can elect to present items of net income and other comprehensive income in one continuous statement, or in two separate but consecutive statements. We will be required to comply in the first quarter of 2012. We are evaluating which presentation method to use.
Fair value measurement policy
    The FASB issued authoritative guidance that changed some fair value measurement principles and disclosure requirements. The most significant disclosure change is expansion of required information for unobservable inputs. We will be required to comply in the first quarter of 2012. We are evaluating the impact of this guidance.