Investments (Tables)

9 Months Ended

Sep. 30, 2011

Investments

Unconsolidated Equity Investments

	Alliant Energy												WPL
	Three Months						Nine Months						Three Months						Nine Months
	2011			2010			2011			2010			2011			2010			2011			2010
American Transmission Company LLC (ATC)	($	9.7	)	($	9.2	)	($	28.2	)	($	27.6	)	($	9.7	)	($	9.2	)	($	28.2	)	($	27.6	)
Other		(0.4	)		(0.1	)		(1.4	)		(1.1	)		(0.1	)		(0.1	)		(0.7	)		(0.8	)
	($	10.1	)	($	9.3	)	($	29.6	)	($	28.7	)	($	9.8	)	($	9.3	)	($	28.9	)	($	28.4	)

Summary Financial Information

	Three Months				Nine Months
	2011		2010		2011		2010
Operating revenues	$	142.8	$	136.8	$	420.6	$	414.0
Operating income		76.4		77.2		228.1		229.0
Net income		56.6		55.0		166.5		164.2