Commitments and Contingencies - Legal and Other Matters Narrative (Details) - USD ($) $ in Millions			1 Months Ended
	May 29, 2018	Mar. 03, 2014	Jul. 31, 2019	Dec. 31, 2019
Legal Matters
Loss Contingencies [Line Items]
Amount accrued				$ 26.0
Storey Minerals V. EP Energy, MFN Clause Accrual
Loss Contingencies [Line Items]
Amount accrued				4.0
Damages sought	$ 4.0
Storey Minerals V. EP Energy, MFN Clause Disputed Amount
Loss Contingencies [Line Items]
Damages sought			$ 43.8
Indemnification and Other Matters
Loss Contingencies [Line Items]
Amount accrued				12.0
FairfieldNodal V. EP Energy E&P, Company L.P. | Pending Litigation
Loss Contingencies [Line Items]
Amount accrued				$ 21.0
Damages sought		$ 21.0