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Accounts Receivable (Tables)

12 Months Ended

Dec. 31, 2017

Accounts Receivable, Net, Current [Abstract]

Schedule of Accounts Receivable

	December 31,
($ millions)	2017				2016
Utility customers and other	$	42.3			$	15.3
Contract services, primarily DOE	17.9				4.6
Accounts receivable, net	$	60.2			$	19.9

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- References

No definition available.

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- Definition

Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3,4)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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