Investment in ProLiance Holdings, LLC (Tables)

12 Months Ended

Dec. 31, 2017

Equity Method Investments and Joint Ventures [Abstract]

Summarized Financial Information of Equity Investment

The Company's remaining investment at December 31, 2017, shown at its 61 percent ownership share of the individual net assets of ProLiance, is as follows.

	As of
	December 31,
(In millions)	2017
Cash	$	0.8
Investment in LA Storage	22.4
Total investment in ProLiance	$	23.2
Included in:
Investments in unconsolidated affiliates	$	18.8
Other nonutility investments	$	4.4