CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
OPERATING ACTIVITIES
Net income attributable to QEP	$ 118.5	$ 211.4
Net income attributable to noncontrolling interest	17.6	5.8
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	755.8	757.1
Deferred income taxes	91.5	39.3
Impairment	3.6	4.0
Equity-based compensation	20.7	20.0
Amortization of debt issuance costs and discounts	5.1	4.7
Net loss (gain) from asset sales	210.3	(113.0)
Income from unconsolidated affiliates	(4.6)	(3.7)
Distributions from unconsolidated affiliates and other	5.1	5.9
Unrealized (gain) loss on derivative contracts	(65.9)	55.5
Changes in operating assets and liabilities	62.0	(8.1)
Net Cash Provided by Operating Activities	1,219.7	978.9
INVESTING ACTIVITIES
Property acquisitions	(949.7)	(39.3)
Property, plant and equipment, including dry exploratory well expense	(1,270.4)	(1,089.6)
Proceeds from disposition of assets	706.2	208.3
Acquisition deposit held in escrow	50.0	0
Other investing activities	3.2	0
Net Cash Used in Investing Activities	(1,460.7)	(920.6)
FINANCING ACTIVITIES
Checks outstanding in excess of cash balances	(81.1)	(38.1)
Long-term debt issued	300.0	0
Long-term debt issuance costs paid	(1.1)	(3.0)
Proceeds from credit facility	4,509.0	2,132.5
Repayments of credit facility	(4,461.5)	(2,457.5)
Treasury stock repurchases	(6.6)	(8.7)
Net proceeds from the issuance of QEP Midstream common units	0	449.6
Other capital contributions	5.1	3.6
Dividends paid	(10.8)	(10.8)
Excess tax (provisions) benefit on equity-based compensation	(0.6)	1.3
Distribution to noncontrolling interest	(23.3)	(4.2)
Net Cash Provided by Financing Activities	229.1	64.7
Change in cash and cash equivalents	(11.9)	123.0
Beginning cash and cash equivalents	11.9	0
Ending cash and cash equivalents	0	123.0
Supplemental Disclosures:
Cash paid for interest, net of capitalized interest	128.9	120.1
Cash paid for income taxes	(1.1)	49.4
Non-cash investing activities
Change in capital expenditure accrual balance	$ 66.5	$ 53.7