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ACQUISITION (Tables)
 6 Months Ended
Jun. 30, 2018
Business Combinations [Abstract]  
Allocation of purchase price
The table below shows the allocation of the purchase price to the assets acquired at the date of the acquisition, which are included in rate base.
(in millions)
 
 
Current assets
 
$
0.2

Net property, plant, and equipment
 
76.9

Total purchase price
 
$
77.1