COMMITMENTS AND CONTINGENCIES - Additional Information (Details) $ in Millions			12 Months Ended
	Mar. 21, 2016 USD ($)	Mar. 20, 2016 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2017 AUD ($)	Apr. 30, 2017 AUD ($)	Mar. 12, 2014 USD ($)
Commitment And Contingencies [Line Items]
Accrued liability for legal contingencies			$ 21,000,000
Environmental tax and royalty obligations								$ 100,000,000
Retain right of obligations			45,000,000
Loss contingency punitive damages			60,000,000
Maximum cost considered to be recognized for additional reserve			300,000
Undiscounted reserve for environmental remediation			2,000,000
Short-term lease expense			18,000,000
Fixed operating lease expenses			222,000,000
Other noncurrent liabilities			520,000,000	$ 219,000,000
Financing costs, net			462,000,000	$ 478,000,000	$ 397,000,000
Variable lease payment			78,000,000
Apollo Exploration Lawsuit
Commitment And Contingencies [Line Items]
Loss contingency damages sought value	$ 200,000,000
Castex Lawsuit
Commitment And Contingencies [Line Items]
Loss contingency damages sought value			200,000,000
Loss contingency estimate of possible loss			60,000,000
Oklahoma Class Actions
Commitment And Contingencies [Line Items]
Loss contingency damages sought value			100,000,000
Minimum | Apollo Exploration Lawsuit
Commitment And Contingencies [Line Items]
Loss contingency damages sought value		$ 1,100,000,000
Apache Australia Operation | Australian Operations Divestiture Dispute
Commitment And Contingencies [Line Items]
Gain contingency, unrecorded amount							$ 80
Loss contingency estimate of possible loss						$ 200
Accounting Standards Update 2016-02
Commitment And Contingencies [Line Items]
Other noncurrent liabilities			39,000,000
Assets Held Under Finance Leases
Commitment And Contingencies [Line Items]
Depreciation			7,000,000
Financing costs, net			$ 3,000,000