XML 68 R14.htm IDEA: XBRL DOCUMENT v2.4.0.8
Investments
 9 Months Ended
Sep. 30, 2013
Schedule of Equity Method Investments [Line Items]  
Investments
INVESTMENTS
Unconsolidated Equity Investments - Equity (income) loss from Alliant Energy’s and WPL’s unconsolidated investments accounted for under the equity method of accounting for the three and nine months ended September 30 was as follows (in millions):
 
Alliant Energy
 
WPL
 
Three Months
 
Nine Months
 
Three Months
 
Nine Months
 
2013
 
2012
 
2013
 
2012
 
2013
 
2012
 
2013
 
2012
ATC

($10.8
)
 

($10.4
)
 

($31.7
)
 

($30.6
)
 

($10.8
)
 

($10.4
)
 

($31.7
)
 

($30.6
)
Other
(0.3
)
 
—

 
(1.0
)
 
0.2

 
(0.3
)
 
(0.1
)
 
(1.0
)
 
(0.6
)
 

($11.1
)
 

($10.4
)
 

($32.7
)
 

($30.4
)
 

($11.1
)
 

($10.5
)
 

($32.7
)
 

($31.2
)


Summary financial information from the unaudited financial statements of ATC for the three and nine months ended September 30 was as follows (in millions):
 
Three Months
 
Nine Months
 
2013
 
2012
 
2013
 
2012
Operating revenues

$160.4

 

$150.3

 

$464.3

 

$450.1

Operating income
82.9

 
81.5

 
247.1

 
240.0

Net income
62.7

 
60.5

 
184.5

 
177.9
WPL [Member]
  
Schedule of Equity Method Investments [Line Items]  
Investments
INVESTMENTS
Unconsolidated Equity Investments - Equity (income) loss from Alliant Energy’s and WPL’s unconsolidated investments accounted for under the equity method of accounting for the three and nine months ended September 30 was as follows (in millions):
 
Alliant Energy
 
WPL
 
Three Months
 
Nine Months
 
Three Months
 
Nine Months
 
2013
 
2012
 
2013
 
2012
 
2013
 
2012
 
2013
 
2012
ATC

($10.8
)
 

($10.4
)
 

($31.7
)
 

($30.6
)
 

($10.8
)
 

($10.4
)
 

($31.7
)
 

($30.6
)
Other
(0.3
)
 
—

 
(1.0
)
 
0.2

 
(0.3
)
 
(0.1
)
 
(1.0
)
 
(0.6
)
 

($11.1
)
 

($10.4
)
 

($32.7
)
 

($30.4
)
 

($11.1
)
 

($10.5
)
 

($32.7
)
 

($31.2
)


Summary financial information from the unaudited financial statements of ATC for the three and nine months ended September 30 was as follows (in millions):
 
Three Months
 
Nine Months
 
2013
 
2012
 
2013
 
2012
Operating revenues

$160.4

 

$150.3

 

$464.3

 

$450.1

Operating income
82.9

 
81.5

 
247.1

 
240.0

Net income
62.7

 
60.5

 
184.5

 
177.9