Other Property and Equipment - Narrative (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended						1 Months Ended			12 Months Ended									1 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Chesapeake Midstream Operating [Member]	Dec. 31, 2012 Chesapeake Midstream Operating [Member] Common Stock	Dec. 31, 2012 Midstream Eagle Ford Oil Gathering Assets [Member]	Dec. 31, 2011 Midstream Eagle Ford Oil Gathering Assets [Member] Subsequent Payment [Member]	Dec. 31, 2011 Midstream Eagle Ford Oil Gathering Assets [Member] Cash Payment [Member]	Jun. 30, 2011 Bronco Drilling Company Incorporated [Member]	Dec. 31, 2013 Gas Gathering and Processing Equipment [Member]	Dec. 31, 2012 Gas Gathering and Processing Equipment [Member]	Dec. 31, 2011 Gas Gathering and Processing Equipment [Member]	Dec. 31, 2013 Gas Gathering and Processing Equipment [Member] Sale to SemGas, L.P. [Member]	Dec. 31, 2013 Gas Gathering and Processing Equipment [Member] Sale to MarkWest Oklahoma Gas Company L.L.C. [Member]	Dec. 31, 2013 Gas Gathering and Processing Equipment [Member] Sale to Western Gas Partners, LP [Member]	Dec. 31, 2013 Land and Building [Member]	Dec. 31, 2012 Land and Building [Member]	Dec. 31, 2011 Land and Building [Member]	Dec. 31, 2011 Chesapeake Midstream Development L P [Member] Appalachia Midstream Services, L.L.C. [Member]	Dec. 31, 2012 Chesapeake Midstream Development L P [Member] Appalachia Midstream Services, L.L.C. [Member]	Dec. 31, 2013 Chesapeake Midstream Development L P [Member] Appalachia Midstream Services, L.L.C. [Member]
Property, Plant and Equipment [Line Items]
Proceeds from Sale of Property, Plant, and Equipment							$ 10	$ 115					$ 306	$ 252	$ 134
Net gains on sales of fixed assets	(302)	(267)	(437)	289		3				(326)	(286)	(440)	141	105	55	27	7	2
Gathering Fee Escalation Rate				2.50%
Gain (Loss) on Disposition of Assets for Financial Service Operations																				439
Proceeds from Divestiture of Businesses and Interests in Affiliates					2,160														884
Contract Term																					15 years
Significant Acquisitions and Disposals, Acquisition Costs or Sale Proceeds									$ 339
Share Price									$ 11.00