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Receivables and other assets - Additional information (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Trade and other receivables [abstract]
Receivables participated in the global factoring programme	$ 588	$ 475
Receivables participated in the letter of credit discounting programme	$ 510	$ 372

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- Definition

Trade And Other Receivables, Held For Sale, Global Factoring Programme

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- Definition

Trade And Other Receivables, Held For Sale, Letter Of Credit Discounting Programme

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No definition available.

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Namespace Prefix:	rio_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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