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Regulatory Matters (Policies)
3 Months Ended
Mar. 31, 2012
Regulatory Matters [Abstract]  
Regulatory Assets and Liabilities [Policy Text Block]
Our regulated utility operations are subject to the accounting guidance for Regulated Operations. We capitalize incurred costs which are probable of recovery in future utility rates as regulatory assets. Regulatory liabilities represent amounts expected to be refunded or credited to customers in rates. No regulatory assets or liabilities are currently earning a return.