Fair Value Measurements - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) bblPerDay d $ / bbl	Dec. 31, 2022 USD ($) $ / bbl	Dec. 31, 2021 USD ($)	May 01, 2020 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	$ 4,866	$ 4,941
Debt instrument, convertible, conversion settlement period after notice | d	25
Impairment of long-lived assets	$ 22	23	$ 0
Unproved Properties
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of oil and gas properties	1	7	$ 4
Exchange of productive assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain on disposition of assets	$ 20
Marketing Derivative, January 1, 2021 through December 31, 2026
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Purchase contract, amount of barrel to be purchased and sold | bblPerDay	50,000
Marketing Derivative, May 1, 2022 through April 30, 2027
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Purchase contract, amount of barrel to be purchased and sold | bblPerDay	40,000
Marketing Derivative, August 1, 2022 through July 31, 2027
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Purchase contract, amount of barrel to be purchased and sold | bblPerDay	30,000
0.250% convertible senior notes due 2025 | Convertible debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	$ 537	$ 962		$ 1,300
Marketing derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, fair value input, WASP differential deduction | $ / bbl	1.66	1.67