Operations by Line of Business (Tables)

3 Months Ended

Mar. 31, 2012

Operations by Line of Business [Abstract]

Summary of operating results by line of business

The following table is a summary of operating results by line of business:

	Three Months Ended
	March 31,
	2012			2011
	(in millions)
Revenues from unaffiliated customers (1) (2)
QEP Energy	$	396.8		$	396.2
QEP Field Services		93.6			73.3
QEP Marketing and other		112.8			148.4
Total	$	603.2		$	617.9
Revenues from affiliated companies
QEP Field Services	$	26.1		$	23.3
QEP Marketing and other		132.3			133.1
Total	$	158.4		$	156.4
Operating (loss) income (2)
QEP Energy	$	(12.9	)	$	87.9
QEP Field Services		66.0			47.3
QEP Marketing and other		(3.6	)		1.9
Total	$	49.5		$	137.1
Net income attributable to QEP
QEP Energy	$	108.1		$	43.1
QEP Field Services		45.4			28.0
QEP Marketing and other		1.7			2.1
Total	$	155.2		$	73.2