Derivative Financial Instruments Derivative Financial Instruments (Schedule of NGL Derivative Contracts Volume and Weighted Average Prices) (Details)	Mar. 31, 2014 NGL contract, in BBLS [Member] Collar Contracts for Current Year [Member]		May 05, 2014 NGL contract, in BBLS [Member] Collar Contracts With Short Puts for May Through December Current Year [Member]		Mar. 31, 2014 NGL contract, in BBLS [Member] Collar Contracts With Short Puts for Current Year [Member]		Dec. 31, 2013 NGL contract, in BBLS [Member] Swap Contracts for Current Year [Member]		May 05, 2014 NGL contract, in BBLS [Member] Collar Contracts With Short Puts for June Through December Current Year [Member]		Mar. 31, 2014 NGL contracts, price per BBL [Member] Collar Contracts for Current Year [Member]	May 05, 2014 NGL contracts, price per BBL [Member] Collar Contracts With Short Puts for May Through December Current Year [Member]	May 05, 2014 NGL contracts, price per BBL [Member] Collar Contracts With Short Puts for May Through December Current Year [Member] Short Put [Member]	Mar. 31, 2014 NGL contracts, price per BBL [Member] Collar Contracts With Short Puts for Current Year [Member]	Mar. 31, 2014 NGL contracts, price per BBL [Member] Collar Contracts With Short Puts for Current Year [Member] Short Put [Member]	Dec. 31, 2013 NGL contracts, price per BBL [Member] Swap Contracts for Current Year [Member]	May 05, 2014 NGL contracts, price per BBL [Member] Collar Contracts With Short Puts for June Through December Current Year [Member]	May 05, 2014 NGL contracts, price per BBL [Member] Collar Contracts With Short Puts for June Through December Current Year [Member] Short Put [Member]
Derivative [Line Items]
Derivative, Average Cap Price											13.72	93.24		109.50			93.35
Derivative, Average Floor Price											10.78	88.20		95.00			88.20
Derivative, Notional Amount, Price Per Unit													81.90		80.00			81.90
Derivative, Nonmonetary Notional Amount	3,000	[1]	1,000	[2]	1,000	[2]	2,556	[3]	1,500	[2]
Derivative, Swap Type, Average Fixed Price																48.15

[1] (b)Represent collar contracts that reduce the price volatility of ethane forecasted for sale by the Company at Mont Belvieu, Texas-posted prices.

[2] (a)Represent collar contracts with short puts that reduce the price volatility of natural gasoline forecasted for sale by the Company at Mont Belvieu, Texas-posted prices. During the period from April 1, 2014 to May 5, 2014, the Company entered into additional natural gasoline collar contracts with short puts for (i) 1,000 BBLs per day of May through December 2014 production with a ceiling price of $93.24 per BBL, a floor price of $88.20 per BBL and a short put price of $81.90 per BBL and (ii) 1,500 BBLs per day of June through December 2014 production with a ceiling price of $93.35 per BBL, a floor price of $88.20 per BBL and a short put price of $81.90 per BBL.

[3] (c)Represent swap contracts that reduce the price volatility of propane forecasted for sale by the Company at Mont Belvieu, Texas-posted prices.