Financial Instruments - Unsettled Derivatives (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 135	$ 80
Derivative Liability, Fair Value, Gross Liability	34	24
Derivative Asset, Fair Value, Gross Liability	3	0
Derivative Liability, Fair Value, Gross Asset	3	0
Derivative Asset	132	80
Derivative Liability	31	24
Trade accounts receivable
Derivatives, Fair Value [Line Items]
Derivative Asset	101	76
Derivative Liability	4	2
Other current assets
Derivatives, Fair Value [Line Items]
Derivative Asset	26	4
Derivative Liability	0	0
Accounts payable and accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative Asset	5	0
Derivative Liability	27	22
Commodity Contract
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	27	4
Derivative Liability, Fair Value, Gross Liability	23	1
Derivative Asset	27	4
Derivative Liability	23	1
Embedded Derivative Financial Instruments
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	108	76
Derivative Liability, Fair Value, Gross Liability	11	23
Derivative Asset, Fair Value, Gross Liability	3	0
Derivative Liability, Fair Value, Gross Asset	3	0
Derivative Asset	105	76
Derivative Liability	8	23
Designated as Hedging Instrument | Commodity Contract
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	27	4
Not Designated as Hedging Instrument | Embedded Derivative Financial Instruments
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	108	76
Derivative Liability, Fair Value, Gross Liability	11	23
Commodity Contract | Not Designated as Hedging Instrument | Forward Contracts
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	$ 23	$ 1