Derivative Contracts Schedule Of Commodity Derivative Contracts (Details) (USD $)	3 Months Ended
	Mar. 31, 2015 MMBTU
Natural Gas Sales [Member] | QEP Energy [Member] | Year 2015 [Member] | NYMEX HH [Member]
Derivative [Line Items]
Derivative Contract Year	2015
Derivative, Underlying Basis	NYMEX HH
Derivative, Nonmonetary Notional Amount	52,300,000
Underlying, Derivative Asset	3.48
Natural Gas Sales [Member] | QEP Energy [Member] | Year 2015 [Member] | IFNPCR [Member]
Derivative [Line Items]
Derivative Contract Year	2015
Derivative, Underlying Basis	IFNPCR
Derivative, Nonmonetary Notional Amount	35,800,000
Underlying, Derivative Asset	3.55
Natural Gas Sales [Member] | QEP Energy [Member] | Year 2016 [Member] | NYMEX HH [Member]
Derivative [Line Items]
Derivative Contract Year	2016
Derivative, Underlying Basis	NYMEX HH
Derivative, Nonmonetary Notional Amount	14,600,000
Underlying, Derivative Asset	3.29
Natural Gas Sales [Member] | QEP Energy [Member] | Year 2016 [Member] | IFNPCR [Member]
Derivative [Line Items]
Derivative Contract Year	2016
Derivative, Underlying Basis	IFNPCR
Derivative, Nonmonetary Notional Amount	11,000,000
Underlying, Derivative Asset	2.97
Natural Gas Sales [Member] | QEP Marketing [Member] | Year 2015 [Member] | IFNPCR [Member]
Derivative [Line Items]
Derivative Contract Year	2015
Derivative, Underlying Basis	IFNPCR
Derivative, Nonmonetary Notional Amount	1,700,000
Underlying, Derivative Asset	3.29
Natural Gas Sales [Member] | QEP Marketing [Member] | Year 2016 [Member] | IFNPCR [Member]
Derivative [Line Items]
Derivative Contract Year	2016
Derivative, Underlying Basis	IFNPCR
Derivative, Nonmonetary Notional Amount	1,400,000
Underlying, Derivative Asset	3.34
Purchased Gas and Oil Expense [Member] | QEP Marketing [Member] | Year 2015 [Member] | IFNPCR [Member]
Derivative [Line Items]
Derivative Contract Year	2015
Derivative, Underlying Basis	IFNPCR
Derivative, Nonmonetary Notional Amount	1,300,000
Underlying, Derivative Asset	2.88
Crude Oil Sales Costless Collars [Member] | QEP Energy [Member] | Year 2015 [Member] | NYMEX WTI [Member]
Derivative [Line Items]
Derivative Contract Year	2015
Derivative, Underlying Basis	NYMEX WTI
Derivative, Nonmonetary Notional Amount	300,000
Derivative Average Price Floor	$ 50.00
Derivative Average Price Ceiling	$ 64.35
Oil Sales [Member] | QEP Energy [Member] | Year 2015 [Member] | NYMEX WTI [Member]
Derivative [Line Items]
Derivative Contract Year	2015
Derivative, Underlying Basis	NYMEX WTI
Derivative, Nonmonetary Notional Amount	6,600,000
Underlying, Derivative Asset	85.89
Oil Sales [Member] | QEP Energy [Member] | Year 2015 [Member] | BRENT ICE [Member]
Derivative [Line Items]
Derivative Contract Year	2015
Derivative, Underlying Basis	ICE Brent
Derivative, Nonmonetary Notional Amount	300,000
Underlying, Derivative Asset	104.95
Oil Sales [Member] | QEP Energy [Member] | Year 2016 [Member] | NYMEX WTI [Member]
Derivative [Line Items]
Derivative Contract Year	2016
Derivative, Underlying Basis	NYMEX WTI
Derivative, Nonmonetary Notional Amount	1,100,000
Underlying, Derivative Asset	70.85
Gas Basis Swaps [Member] | QEP Energy [Member] | Year 2015 [Member] | NYMEX HH LESS IFNPCR [Member]
Derivative [Line Items]
Derivative Contract Year	2015
Derivative, Underlying Basis	IFNPCR
Derivative, Nonmonetary Notional Amount	27,500,000
Underlying, Derivative Asset	(0.30)