Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Operating revenues and other income
Related Party Transaction [Line Items]
Significant transactions with related parties	$ 1,954	$ 1,074	$ 3,475	$ 2,110
Purchases
Related Party Transaction [Line Items]
Significant transactions with related parties	680	4,110	1,243	8,120
Operating expenses and selling, general and administrative expenses
Related Party Transaction [Line Items]
Significant transactions with related parties	$ 76	$ 79	$ 147	$ 153

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details