Variable Interest Entities - Narrative (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Chesapeake Granite Wash Trust | Consolidated Entities
Variable Interest Entity [Line Items]
VIE's cash and cash equivalents	$ 1
Consolidation Net Oil and Gas Property Assets	298
VIE's, short-term derivative liabilities	6
VIE's, other current liabilities	19
Corporate Ownership Requirement [Member] | Mineral Acquisition Company I, L.P. | Limited Partner [Member]
Variable Interest Entity [Line Items]
Percentage of acquisition	10.00%
Corporate Ownership Requirement [Member] | Mineral Acquisition Company I, L.P. | Minimum | Limited Partner [Member]
Variable Interest Entity [Line Items]
Percentage of royalty minimum	7.00%
Corporate Ownership Requirement [Member] | Mineral Acquisition Company I, L.P. | Maximum | Limited Partner [Member]
Variable Interest Entity [Line Items]
Other Commitment	25
Percentage of royalty maximum	22.50%
Partner Ownership Requirement [Member] | Mineral Acquisition Company I, L.P. | Limited Partner [Member]
Variable Interest Entity [Line Items]
Percentage of acquisition	90.00%
Partner Ownership Requirement [Member] | Mineral Acquisition Company I, L.P. | Maximum | Limited Partner [Member]
Variable Interest Entity [Line Items]
Other Commitment	$ 225