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Operations and Significant Accounting Policies | 6 Months Ended
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Jun. 30, 2013
Operations and Significant Accounting Policies [Abstract] |
Operations and Significant Accounting Policies [Text Block] | OPERATIONS AND SIGNIFICANT ACCOUNTING POLICIES Inventories. Inventories are stated at the lower of cost or market. Amounts removed from inventory are recorded on an average cost basis.
Inventories | June 30, 2013 |  |  | December 31, 2012 |
Millions |  |  |
Fuel |  | $25.3 |  |  |  | $28.0 |
Materials and Supplies | 45.7 |  |  | 41.8 |
Total Inventories |  | $71.0 |  |  |  | $69.8 |
Prepayments and Other Current Assets | June 30, 2013 |  |  | December 31, 2012 |
Millions |  |  |
Deferred Fuel Adjustment Clause |  | $18.3 |  |  |  | $22.5 |
Other | 7.9 |  |  | 11.1 |
Total Prepayments and Other Current Assets |  | $26.2 |  |  |  | $33.6 |
Other Current Liabilities | June 30, 2013 |  |  | December 31, 2012 |
Millions |  |  |
Customer Deposits |  | $29.1 |  |  |  | $28.8 |
Other | 31.7 |  |  | 33.8 |
Total Other Current Liabilities |  | $60.8 |  |  |  | $62.6 |
Other Non-Current Liabilities | June 30, 2013 |  |  | December 31, 2012 |
Millions |  |  |
Asset Retirement Obligation |  | $81.6 |  |  |  | $77.9 |
Other | 47.7 |  |  | 45.4 |
Total Other Non-Current Liabilities |  | $129.3 |  |  |  | $123.3 |
NOTE 1. OPERATIONS AND SIGNIFICANT ACCOUNTING POLICIES (Continued) Supplemental Statement of Cash Flows Information.
For the Six Months Ended June 30, | 2013 |  |  | 2012 |
Millions |  |  |
Cash Paid During the Period for Interest – Net of Amounts Capitalized |  | $22.8 |  |  |  | $21.7 |
Cash Paid During the Period for Income Taxes |  | $0.6 |  |  |  | $0.2 |
Noncash Investing and Financing Activities |  |  |  |  |
Decrease in Accounts Payable for Capital Additions to Property, Plant and Equipment |  | $28.2 |  |  |  | $14.8 |
Capitalized Asset Retirement Costs |  | $1.9 |  |  |  | $2.4 |
AFUDC – Equity |  | $2.1 |  |  |  | $1.9 |
Subsequent Events. The Company performed an evaluation of subsequent events for potential recognition and disclosure through the time of the financial statements issuance. New Accounting Standards. Amounts Reclassified Out of Accumulated Other Comprehensive Income. In February 2013, the FASB issued an accounting standard update on disclosure of amounts reclassified out of accumulated other comprehensive income. This update requires entities to provide information about amounts reclassified out of accumulated other comprehensive income by component. In addition, entities are required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount reclassified is required under GAAP to be reclassified to net income in its entirety in the same reporting period. For other amounts that are not required under GAAP to be reclassified in their entirety to net income, entities are required to cross-reference to other disclosures required under GAAP that provide additional detail on these amounts. This guidance was adopted beginning with the quarter ended March 31, 2013, and required additional disclosures but did not have an impact on our consolidated financial position, results of operations, or cash flows. (See Note 11. Reclassifications Out of Accumulated Other Comprehensive Income (Loss).)

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- Definition The entire disclosure for the general note to the financial statements for the reporting entity which may include, descriptions of the basis of presentation, business description, significant accounting policies, consolidations, reclassifications, new pronouncements not yet adopted and changes in accounting principles. + References No definition available. + Details
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