Fair Value Measurements - Narrative (Details) shares in Thousands, $ in Millions	9 Months Ended
	Sep. 30, 2022 USD ($) d $ / bbl	Sep. 30, 2021 $ / bbl	Dec. 31, 2021 USD ($)	Oct. 31, 2021 shares	May 01, 2020 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI (in shares) | shares				960
Long-term debt	$ 5,241		$ 6,975
Debt instrument, convertible, conversion settlement period after notice | d	25
0.250% convertible senior notes due 2025 | Senior notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	$ 1,083		$ 1,323		$ 1,300
Conversion option derivative assets and liabilities	$ 1
Marketing derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, fair value input, WASP differential deduction | $ / bbl	1.63	2.07