Operating Revenue

9 Months Ended

Sep. 30, 2017

Regulated And Unregulated Operating Revenue [Abstract]

Operating Revenue

Note 3. Operating Revenue

Questar Gas' operating revenue consists of the following:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
(millions)
Residential and commercial gas sales	$	75.3	$	72.1	$	575.8	$	576.7
Industrial gas sales		2.6		3.5		8.9		13.0
Gas transportation		6.1		6.3		19.3		18.0
Other(1)		6.9		6.0		23.5		16.3
Total operating revenue	$	90.9	$	87.9	$	627.5	$	624.0

(1) See Note 12 for amounts attributable to related parties.