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Change in Accounting Principle - Statements of Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
NET INCOME (LOSS) $ (21) $ 18 [1],[2]
OTHER COMPREHENSIVE INCOME, NET OF INCOME TAX:    
Unrealized gains on derivative instruments [3] 0 0 [2]
Reclassification of losses on settled derivative instruments 10 10 [2],[3]
Other Comprehensive Income 10 10 [2]
COMPREHENSIVE INCOME (LOSS) (11) 28 [2]
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS 0 (1)
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO CHESAPEAKE (11) 27 [2]
Under Full Cost    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
NET INCOME (LOSS) 180 294
OTHER COMPREHENSIVE INCOME, NET OF INCOME TAX:    
Unrealized gains on derivative instruments [3] 0 0
Reclassification of losses on settled derivative instruments 10 10
Other Comprehensive Income 10 10
COMPREHENSIVE INCOME (LOSS) 190 304
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS (1) (1)
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO CHESAPEAKE 189 303
Successful Efforts Adjustment    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
NET INCOME (LOSS) (201) (276)
OTHER COMPREHENSIVE INCOME, NET OF INCOME TAX:    
Unrealized gains on derivative instruments [3] 0 0
Reclassification of losses on settled derivative instruments 0 0
Other Comprehensive Income 0 0
COMPREHENSIVE INCOME (LOSS) (201) (276)
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS 1 0
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO CHESAPEAKE $ (200) $ (276)
[1] Financial information for 2018 has been recast to reflect the retrospective application of the successful efforts method of accounting. See Note 1.
[2] Financial information for 2018 has been recast to reflect the retrospective application of the successful efforts method of accounting. See Note 1.
[3] Deferred tax activity incurred in other comprehensive income was offset by a valuation allowance.