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Operations and Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2013

Operations and Significant Accounting Policies [Abstract]

Inventories [Table Text Block]

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 [Table Text Block]

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 and Non-Current Liabilities [Table Text Block]

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

Supplemental Statement of Cash Flows Information [Table Text Block]

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

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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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