Fair Value Measurements - Narrative (Details) shares in Millions	1 Months Ended	3 Months Ended			9 Months Ended
	Jul. 25, 2019 shares	Sep. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2019 derivative
Fair Value Disclosures [Abstract]
Long term derivative assets		$ 0			$ 0
Long term derivative liabilities		0			0
Outstanding derivative instruments | derivative							0
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairments recorded related to proved and unproved oil and natural gas properties			$ 1,900,000,000
Proved property impairment		$ 0	1,400,000,000	$ 0	$ 1,381,258,000	$ 0
Unproved property impairment			$ 600,000,000
Class A Common Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate shares issued (in shares) | shares	9.2
Weighted Average | Cost of Capital | Market Participant Based
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Market participant based weighted average cost of capital for proved property impairments			0.10
Market participant based weighted average cost of capital for unproved property impairments			0.12
Fair Value, Nonrecurring | Fair Value | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Proved properties impaired, fair values as of the most recent date of impairment			$ 800,000,000
Unproved properties impaired, fair values as of the most recent date of impairment			$ 300,000,000