v2.4.0.6

Derivative Instruments (Tables)

9 Months Ended

Sep. 30, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Notional Amounts Of Derivative Instruments

As of September 30, 2012, notional amounts by delivery year related to outstanding swap contracts, option contracts, physical forward contracts, FTRs and coal contracts that were accounted for as commodity derivative instruments were as follows (units in thousands):

	2012			2013			2014			2015			Total
Alliant Energy
Electricity (megawatt-hours (MWhs))	1,280			3,860			2,118			876			8,134
FTRs (MWs)	16			28			—			—			44
Natural gas (dekatherms (Dths))	26,070			44,899			6,410			—			77,379
Coal (tons)	—			956			981			561			2,498
IPL
Electricity (MWhs)	786			1,978			366			—			3,130
FTRs (MWs)	8			15			—			—			23
Natural gas (Dths)	19,274			32,309			3,235			—			54,818
WPL
Electricity (MWhs)	494			1,882			1,752			876			5,004
FTRs (MWs)	8			13			—			—			21
Natural gas (Dths)	6,796			12,590			3,175			—			22,561
Coal (tons)	—			956			981			561			2,498

Fair Value Of Financial Instruments

The fair values of current derivative assets were included in “Derivative assets,” non-current derivative assets were included in “Deferred charges and other,” current derivative liabilities were included in “Derivative liabilities” and non-current derivative liabilities were included in “Other long-term liabilities and deferred credits” on the Condensed Consolidated Balance Sheets as follows (in millions):

	Alliant Energy								IPL								WPL
	September 30, 2012				December 31, 2011				September 30, 2012				December 31, 2011				September 30, 2012				December 31, 2011
Commodity contracts
Current derivative assets		$35.9				$12.7				$25.9				$9.2				$10.0				$3.5
Non-current derivative assets	10.6				3.0				2.2				1.4				8.4				1.6
Current derivative liabilities	37.8				55.9				17.9				24.5				19.9				31.4
Non-current derivative liabilities	19.5				22.1				4.9				9.1				14.6				13.0

Gains And Losses From Derivative Instruments Not Designated As Hedging Instruments

Gains (losses) from commodity derivative instruments not designated as hedging instruments were recorded on the Condensed Consolidated Balance Sheets as follows (in millions):

	Alliant Energy								IPL								WPL
	2012				2011				2012				2011				2012				2011
Three Months Ended September 30
Regulatory assets		($6.3	)			($23.8	)			($0.1	)			($13.3	)			($6.2	)			($10.5	)
Regulatory liabilities	15.8				3.7				6.9				2.2				8.9				1.5
Nine Months Ended September 30
Regulatory assets	(38.3		)		(33.1		)		(17.3		)		(18.7		)		(21.0		)		(14.4		)
Regulatory liabilities	21.3				8.6				11.3				5.4				10.0				3.2

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Tabular disclosure of the location and amount of gains and losses reported in the statement of financial performance, or when applicable, the statement of financial position. For example, (a) gains and losses recognized in the income statement on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges and (b) gains and losses initially recognized in other comprehensive income on derivative instruments designated and qualifying as cash flow hedges.

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Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-Paragraph 205G

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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Tabular disclosure of the notional amounts of outstanding derivative positions.

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