Variable Interest Entities - Narrative (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Chesapeake Granite Wash Trust | Consolidated Entities
Variable Interest Entity [Line Items]
Consolidation Net Oil and Gas Property Assets	$ 320
Other current liabilities attributable to our VIEs	22
Cash and cash equivalents attributable to our VIEs	1
Short-term derivative liabilities attributable to our VIEs	5
Mineral Acquisition Company I, L.P. | Corporate Ownership Requirement [Member] | Limited Partner [Member]
Variable Interest Entity [Line Items]
Percentage of acquisition	10.00%
Mineral Acquisition Company I, L.P. | Corporate Ownership Requirement [Member] | Minimum | Limited Partner [Member]
Variable Interest Entity [Line Items]
Percentage of royalty minimum	7.00%
Mineral Acquisition Company I, L.P. | Corporate Ownership Requirement [Member] | Maximum | Limited Partner [Member]
Variable Interest Entity [Line Items]
Other Commitment	25
Percentage of royalty maximum	22.50%
Mineral Acquisition Company I, L.P. | Partner Ownership Requirement [Member] | Limited Partner [Member]
Variable Interest Entity [Line Items]
Percentage of acquisition	90.00%
Mineral Acquisition Company I, L.P. | Partner Ownership Requirement [Member] | Maximum | Limited Partner [Member]
Variable Interest Entity [Line Items]
Other Commitment	$ 225