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Contingencies - Narrative (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Loss Contingencies [Line Items]      
Provision for legal contingencies $ 234us-gaap_LossContingencyAccrualProvision $ 0us-gaap_LossContingencyAccrualProvision $ 0us-gaap_LossContingencyAccrualProvision
Redemption of 2019 Notes [Member]      
Loss Contingencies [Line Items]      
Provision for legal contingencies 100us-gaap_LossContingencyAccrualProvision
/ us-gaap_LitigationCaseAxis
= chk_Redemptionof2019NotesMember		    
Redemption of 2019 Notes [Member] | Minimum [Member]      
Loss Contingencies [Line Items]      
Provision for legal contingencies 100us-gaap_LossContingencyAccrualProvision
/ us-gaap_LitigationCaseAxis
= chk_Redemptionof2019NotesMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		    
Redemption of 2019 Notes [Member] | Maximum [Member]      
Loss Contingencies [Line Items]      
Provision for legal contingencies 380us-gaap_LossContingencyAccrualProvision
/ us-gaap_LitigationCaseAxis
= chk_Redemptionof2019NotesMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		    
Settled Litigation [Member]      
Loss Contingencies [Line Items]      
Provision for legal contingencies $ 119us-gaap_LossContingencyAccrualProvision
/ us-gaap_LitigationStatusAxis
= us-gaap_SettledLitigationMember		    
Senior Notes [Member] | 6.775% Senior Notes Due 2019 [Member]      
Loss Contingencies [Line Items]      
Prejudgment Interest Statutory Rate 9.00%chk_PrejudgmentInterestStatutoryRate
/ us-gaap_DebtInstrumentAxis
= chk_SixPointSevenSevenFivePercentSeniorNotesDueTwoThousandNineteenMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember