Employee Benefit Plans Employee Benefit Plans - Narrative (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Percentage of Employer Contribution	15.00%
Defined Benefit Plan, Contributions by Employer	$ 81,000,000	$ 91,000,000	$ 72,000,000
Minimum
Defined Benefit Plan Disclosure [Line Items]
Minimum Annual Compensation Received	150,000
Performance Bonus [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage Of Performance Bonus, Maximum Compensation Deferred	100.00%
Director Compensation [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of Basic Salary, Maximum Compensation Deferred	100.00%
Chesapeake Appalachia, L.L.C. [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension and Other Postretirement Defined Benefit Plans, Liabilities	3,000,000
Dc Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	15.00%
Participant Age to Diversify Match	55
Deferred Compensation Arrangement with Individual, Employer Contribution	$ 14,000,000	$ 16,000,000	$ 12,000,000
Dc Plan [Member] | Maximum
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	100.00%
Percentage of Basic Salary, Maximum Compensation Deferred	75.00%