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Investments and Acquisitions
9 Months Ended
Sep. 30, 2019
Schedule of Investments [Line Items]  
Investments and Acquisitions INVESTMENTS AND ACQUISITIONS
Unconsolidated Equity Investments - Alliant Energy’s equity (income) loss from unconsolidated investments accounted for under the equity method of accounting for the three and nine months ended September 30 was as follows (in millions):
 
Three Months
 
Nine Months
 
2019
 
2018
 
2019
 
2018
ATC Holdings

($10.5
)
 

($8.9
)
 

($30.0
)
 

($25.4
)
Non-utility wind farm in Oklahoma
(0.4
)
 
0.1

 
(2.8
)
 
(14.5
)
Other
(0.7
)
 
(1.0
)
 
(2.4
)
 
(1.7
)
 

($11.6
)
 

($9.8
)
 

($35.2
)
 

($41.6
)


Non-utility Transportation Acquisitions - In the first quarter of 2019, Alliant Energy, through its wholly-owned non-utility subsidiaries, completed acquisitions of freight management companies located in Cedar Rapids, Iowa and Stoughton, Wisconsin. These acquisitions were purchased for $21 million, including contingent consideration of $8 million, which is expected to be paid within two years. The purchase price was largely allocated to intangibles and the remainder was allocated to working capital and property.