Operations by Line of Business (Notes)

3 Months Ended

Mar. 31, 2014

Segment Reporting [Abstract]

Operations by Line of Business

Note 9 - Operations by Line of Business

Questar's three principal complementary lines of business include Questar Gas, which provides retail natural gas distribution in Utah, Wyoming and Idaho; Wexpro, which develops and produces natural gas from cost-of-service reserves for Questar Gas customers; and Questar Pipeline, which operates interstate natural gas pipelines and storage facilities. Line-of-business information is presented according to senior management's basis for evaluating performance and considering differences in the nature of products, services and regulation, among other factors.

Following is a summary of operations by line of business:

	3 Months Ended						12 Months Ended
	March 31,						March 31,
	2014			2013			2014			2013
	(in millions)
Revenues from Unaffiliated Customers
Questar Gas	$	396.3		$	418.3		$	963.2		$	912.0
Wexpro	12.3			10.3			47.1			37.2
Questar Pipeline	48.0			48.3			189.2			200.9
Other	0.3			—			0.5			—
Total	$	456.9		$	476.9		$	1,200.0		$	1,150.1
Revenues from Affiliated Companies
Questar Gas	$	—		$	0.3		$	0.3		$	2.0
Wexpro	89.1			72.8			311.1			281.2
Questar Pipeline	19.3			19.5			76.5			75.4
Total	$	108.4		$	92.6		$	387.9		$	358.6
Operating Income (Loss)
Questar Gas	$	69.8		$	64.3		$	107.4		$	95.4
Wexpro	48.5			39.8			176.4			160.7
Questar Pipeline	30.1			30.2			35.4			122.4
Corporate and other	(0.1		)	(2.9		)	3.5			(2.3		)
Total	$	148.3		$	131.4		$	322.7		$	376.2
Net Income (Loss)
Questar Gas	$	39.6		$	37.0		$	55.4		$	49.2
Wexpro	31.8			26.3			116.1			105.9
Questar Pipeline	15.7			15.8			8.1			63.9
Corporate and other	(2.0		)	(6.2		)	(6.2		)	(9.3		)
Total	$	85.1		$	72.9		$	173.4		$	209.7