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Operations and Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2012

Operations and Significant Accounting Policies [Abstract]

Inventories [Table Text Block]

Inventories	June 30, 2012				December 31, 2011
Millions
Fuel		$27.5				$28.6
Materials and Supplies	41.8				40.5
Total Inventories		$69.3				$69.1

Prepayments and Other Current Assets [Table Text Block]

Prepayments and Other Current Assets	June 30, 2012				December 31, 2011
Millions
Deferred Fuel Adjustment Clause		$18.5				$17.5
Other	7.0				9.6
Total Prepayments and Other Current Assets		$25.5				$27.1

Other Current and Non-Current Liabilities [Table Text Block]

Other Current Liabilities	June 30, 2012				December 31, 2011
Millions
Customer Deposits		$25.8				$16.3
Other	25.5				29.3
Total Other Current Liabilities		$51.3				$45.6

Other Non-Current Liabilities	June 30, 2012				December 31, 2011
Millions
Asset Retirement Obligation		$61.0				$57.0
Other	49.6				48.1
Total Other Non-Current Liabilities		$110.6				$105.1

Supplemental Statement of Cash Flows Information [Table Text Block]

Supplemental Statement of Cash Flows Information.

For the Six Months Ended June 30,	2012				2011
Millions
Cash Paid During the Period for Interest – Net of Amounts Capitalized		$21.7				$21.9
Cash Paid During the Period for Income Taxes		$0.2				$0.4
Noncash Investing and Financing Activities
Increase (Decrease) in Accounts Payable for Capital Additions to Property, Plant and Equipment		$14.8			$(13.2)
AFUDC – Equity		$1.9				$1.1

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 2

-Paragraph 6

-Subparagraph a,b,c

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