Related Party Transactions - Schedule of Significant Transactions with Related Parties (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Balance Sheet
Accounts and notes receivable	$ 5,744		$ 5,744		$ 6,695
Accounts payable	6,245		6,245		6,044
Income Statement
Operating revenues and other income	15,522	$ 13,604	47,363	$ 42,216
Purchased commodities	5,857	4,747	17,130	14,939
Operating expenses and selling, general and administrative expenses	271	186	712	528
Related Party
Balance Sheet
Accounts and notes receivable	45		45		74
Accounts payable	73		73		$ 57
Income Statement
Operating revenues and other income	12	23	60	64
Purchased commodities	(2)	0	0	0
Operating expenses and selling, general and administrative expenses	$ 84	$ 51	$ 242	$ 163

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

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