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Related party - Schedule of Allocated Corporate Expenses (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Related Party Transaction [Line Items]
Total cost of revenues	$ 2,254	$ 2,264	$ 4,113	$ 4,158
Selling, general and administrative expenses	299	228	538	441
Related Party
Related Party Transaction [Line Items]
Total cost of revenues	8	5	16	15
Selling, general and administrative expenses	25	26	44	44
Total	$ 33	$ 31	$ 60	$ 59

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Management Cost And Corporate Support Services Expense

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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.

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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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