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Loans and financing - Narrative (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2026	Dec. 31, 2025
Loans and Financing [Line Items]
Revolving credit facilities	$ 2,900	$ 3,000
Foreign Countries
Loans and Financing [Line Items]
Revolving credit facilities	$ 500	$ 500

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- Definition

Loans and Financing [Line Items]

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- Definition

The represent value of revolving credit facility be an borrower can borrow and pay multiples times.

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