Acquisitions and Divestitures - Schedule of Consideration Paid to Acquire and Amounts of Assets Acquired and Liabilities Assumed (Parenthetical) (Details) - 2013 Eagle Ford Acquisition [Member]	12 Months Ended
	Dec. 31, 2013 $ / bbl $ / Mcf
Business Acquisition [Line Items]
Weighted average commodity prices of oil | $ / bbl	99.32
Weighted average commodity prices of natural gas | $ / Mcf	3.24