Operating Revenue (Tables)

9 Months Ended

Sep. 30, 2016

Regulated and Unregulated Operating Revenue [Abstract]

Operating Revenue

Questar Gas' operating revenue consists of the following:

	3 Months Ended				9 Months Ended
	September 30,				September 30,
	2016		2015		2016		2015
	(in millions)
Residential and commercial sales	$	72.1	$	73.8	$	576.7	$	554.9
Industrial sales	3.5		4.5		13.0		16.9
Transportation for industrial customers	6.3		5.5		18.0		15.5
Service	1.0		1.0		3.8		3.7
Other	5.0		4.5		12.5		14.8
Total operating revenue	$	87.9	$	89.3	$	624.0	$	605.8