Spin-Off of Oilfield Services Business Narrative (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			6 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2014	Apr. 24, 2014
Assets Disposed of by Method Other than Sale, in Period of Disposition [Line Items]
Long-term Debt, Gross	$ 11,756
Operating Leases, Future Minimum Payments Due	11
Spin-off of oilfield services business (Note 13)	(270)	0	0
Restructuring and other termination costs	7	248	7
Minimum [Member] | Drilling Rig Leases [Member]
Assets Disposed of by Method Other than Sale, in Period of Disposition [Line Items]
Lease Term	3 months
Maximum [Member] | Drilling Rig Leases [Member]
Assets Disposed of by Method Other than Sale, in Period of Disposition [Line Items]
Lease Term	3 years
Senior Notes [Member]
Assets Disposed of by Method Other than Sale, in Period of Disposition [Line Items]
Long-term Debt, Gross	3,000				3,000
Senior Notes [Member] | Minimum [Member]
Assets Disposed of by Method Other than Sale, in Period of Disposition [Line Items]
Long-term Debt, Gross	50
Senior Notes [Member] | Maximum [Member]
Assets Disposed of by Method Other than Sale, in Period of Disposition [Line Items]
Long-term Debt, Gross	75
Seven Seven Energy Inc. [Member]
Assets Disposed of by Method Other than Sale, in Period of Disposition [Line Items]
Stockholders' Equity Note, Stock Split				one share of SSE common stock and cash in lieu of fractional shares for every 14 shares of Chesapeake common stock
Seven Seven Energy Inc. [Member] | Drilling Rig Leases [Member]
Assets Disposed of by Method Other than Sale, in Period of Disposition [Line Items]
Operating Leases, Future Minimum Payments Due	410
Seven Seven Energy Inc. [Member] | Minimum [Member] | Drilling Rig Leases [Member]
Assets Disposed of by Method Other than Sale, in Period of Disposition [Line Items]
Lease Term	3 months
Seven Seven Energy Inc. [Member] | Maximum [Member] | Drilling Rig Leases [Member]
Assets Disposed of by Method Other than Sale, in Period of Disposition [Line Items]
Lease Term	3 years
Seven Seven Energy Inc. [Member] | Secured Debt [Member]
Assets Disposed of by Method Other than Sale, in Period of Disposition [Line Items]
Long-term Debt, Gross				400
Seven Seven Energy Inc. [Member] | Senior Notes [Member] | 6.5% Senior Notes Due 2022 [Member]
Assets Disposed of by Method Other than Sale, in Period of Disposition [Line Items]
Long-term Debt, Gross				500
Debt Instrument, Interest Rate, Stated Percentage				6.50%
General Partner Distributions				391
Seven Seven Energy Inc. [Member] | Spinoff [Member]
Assets Disposed of by Method Other than Sale, in Period of Disposition [Line Items]
Deferred Tax Liabilities, Deferred Expense	151
Restructuring and other termination costs	15	0	0
Seven Seven Energy Inc. [Member] | Seven Seven Energy Inc. Revolving Bank Credit Facility [Member]
Assets Disposed of by Method Other than Sale, in Period of Disposition [Line Items]
Borrowing capacity				275