Business Segments (Tables)

2 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Business Segment Data

Operations by segment for the two months ended December 31, 2016 and 2015, and segment assets as of December 31, 2016, are presented below. Segment assets as presented below exclude all intercompany assets.

	Two Months Ended December 31, 2016
	Gas
	Utilities and
(in millions)	Infrastructure		Other			Total
Unaffiliated revenues	$	308.2	$	—		$	308.2
Related party revenue from Duke Energy	13.5		—			13.5
Total revenues	$	321.7	$	—		$	321.7
Segment income (loss)	59.2		(5.1		)	54.1
Segment assets	5,944.1		—			5,944.1
	Two Months Ended December 31, 2015
	Gas
	Utilities and
(in millions)	Infrastructure		Other			Total
Total revenues	$	259.6	$	—		$	259.6
Segment income (loss)	57.1		(5.1		)	52.0