Derivative Instruments (Tables)

6 Months Ended

Jun. 30, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Notional Amounts Of Derivative Instruments

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



	2012	2013	2014	Total
Alliant Energy
Electricity (megawatt-hours (MWhs))	2,726	3,652	509	6,887
FTRs (MWs)	31	28	—	59
Natural gas (dekatherms (Dths))	33,281	21,089	5,200	59,570
IPL
Electricity (MWhs)	1,600	1,847	71	3,518
FTRs (MWs)	17	15	—	32
Natural gas (Dths)	22,703	10,937	2,025	35,665
WPL
Electricity (MWhs)	1,126	1,805	438	3,369
FTRs (MWs)	14	13	—	27
Natural gas (Dths)	10,578	10,152	3,175	23,905

Fair Value Of Financial Instruments

At June 30, 2012 and December 31, 2011, 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
	June 30, 2012		December 31, 2011		June 30, 2012		December 31, 2011		June 30, 2012		December 31, 2011
Commodity contracts	June 30, 2012		December 31, 2011		June 30, 2012		December 31, 2011		June 30, 2012		December 31, 2011
Current derivative assets		$40.7		$12.7		$29.8		$9.2		$10.9		$3.5
Non-current derivative assets	3.7		3.0		1.7		1.4		2.0		1.6
Current derivative liabilities	48.4		55.9		23.2		24.5		25.2		31.4
Non-current derivative liabilities	16.9		22.1		6.1		9.1		10.8		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 June 30
Regulatory assets		$7.7			($5.3	)		$5.0			($3.0	)		$2.7			($2.3	)
Regulatory liabilities	4.1			3.4			4.4			2.4			(0.3		)	1.0
Six Months Ended June 30
Regulatory assets	(32.0		)	(9.3		)	(17.2		)	(5.4		)	(14.8		)	(3.9		)
Regulatory liabilities	5.5			4.9			4.4			3.2			1.1			1.7

- Definition

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.

+ References+ Details

- Definition

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+ Details