Financial Instruments - Unsettled Derivatives (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 100	$ 80
Derivative Liability, Fair Value, Gross Liability	47	24
Derivative Asset, Fair Value, Gross Liability	7	0
Derivative Liability, Fair Value, Gross Asset	7	0
Derivative Asset	93	80
Derivative Liability	40	24
Trade accounts receivable [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset	53	76
Derivative Liability	21	2
Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset	22	4
Derivative Liability	0	0
Accounts Payable and Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative Asset	18	0
Derivative Liability	17	22
Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative Asset	0	0
Derivative Liability	2	0
Commodity Contract
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	23	4
Derivative Liability, Fair Value, Gross Liability	4	1
Derivative Asset	23	4
Derivative Liability	4	1
Embedded Derivative Financial Instruments
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	77	76
Derivative Liability, Fair Value, Gross Liability	43	23
Derivative Asset, Fair Value, Gross Liability	7	0
Derivative Liability, Fair Value, Gross Asset	7	0
Derivative Asset	70	76
Derivative Liability	36	23
Designated as Hedging Instrument [Member] | Commodity Contract
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	18	4
Derivative Liability, Fair Value, Gross Liability	4	0
Not Designated as Hedging Instrument | Embedded Derivative Financial Instruments
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	77	76
Derivative Liability, Fair Value, Gross Liability	43	23
Commodity Contract | Not Designated as Hedging Instrument | Forward Contracts
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	5	0
Derivative Liability, Fair Value, Gross Liability	$ 0	$ 1