CONSOLIDATED STATEMENTS OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
REVENUES
Natural gas sales	$ 1,239.1		$ 1,205.3		$ 1,187.2
Oil sales	324.2		198.1		141.3
NGL sales	129.7		47.9		22.5
Gathering, processing and other	380.9		251.3		218.4
Purchased gas and oil sales	1,085.3		598.0		441.8
Total Revenues	3,159.2	[1]	2,300.6	[1]	2,011.2
OPERATING EXPENSES
Purchased gas and oil expense	1,077.1		589.3		427.8
Lease operating expense	145.2		125.0		125.5
Natural gas, oil and NGL transportation and other handling costs	102.2		54.2		38.7
Gathering, processing and other	107.3		83.2		76.2
General and administrative	123.2		107.2		91.7
Separation costs	0		13.5		0
Production and property taxes	105.4		82.5		62.9
Depreciation, depletion and amortization	765.4		643.4		559.1
Exploration expenses	10.5		23.0		25.0
Abandonment and impairment	218.4		46.1		20.3
Total Operating Expenses	2,654.7		1,767.4		1,427.2
Net gain from asset sales	1.4		12.1		1.5
OPERATING INCOME	505.9		545.3		585.5
Interest and other income (loss)	4.1		2.3		4.5
Income from unconsolidated affiliates	5.5		3.0		2.7
Unrealized and realized loss on basis-only swaps	0		0		(189.6)
Loss from early extinguishment of debt	(0.7)		(13.3)		0
Interest expense	(90.0)		(84.4)		(70.1)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	424.8		452.9		333.0
Income taxes	(154.4)		(167.0)		(117.6)
INCOME FROM CONTINUING OPERATIONS	270.4		285.9		215.4
Discontinued operations, net of income tax	0		43.2		80.7
NET INCOME	270.4		329.1		296.1
Net income attributable to noncontrolling interest	(3.2)		(2.9)		(2.6)
NET INCOME ATTRIBUTABLE TO QEP	$ 267.2		$ 326.2		$ 293.5
Basic from continuing operations (in dollars per share)	$ 1.51		$ 1.61		$ 1.23
Basic from discontinued operations (in dollars per share)	$ 0		$ 0.25		$ 0.46
Basic total (in dollars per share)	$ 1.51		$ 1.86		$ 1.69
Diluted from continuing operations (in dollars per share)	$ 1.50		$ 1.60		$ 1.21
Diluted from discontinued operations (in dollars per share)	$ 0		$ 0.24		$ 0.46
Diluted total (in dollars per share)	$ 1.50		$ 1.84		$ 1.67
Used in basic calculation	176.5		175.3		174.1
Used in diluted calculation	178.4		177.3		176.3

[1] During the year ended December 31, 2011, QEP revised its reporting of transportation and handling costs which have been recast on the Consolidated Income Statement from revenues to "Natural gas, oil and NGL transportation and other handling costs" for all periods presented. See Note 1, "Summary of Significant Accounting Policies" for additional information. The following table presents prior periods presentation of revenues as previously disclosed: First Quarter Second Quarter Third Quarter Fourth Quarter Year 2011 $ 596.2 $ 784.1 $ 852.4 n/a n/a 2010 580.2 529.6 564.6 572.0 2,246.4