XML 237 R232.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2

Auditors' remuneration - Auditors' remuneration (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Auditors Remuneration [Line Items]
Tax advisory services	$ 0.0	$ 0.0	$ 0.2

X

- Definition

The amount of fees paid or payable to the entity's auditors for tax services.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2019-03-27

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Auditors Remuneration [Line Items]

+ References

No definition available.

+ Details

Name:	rio_AuditorsRemunerationLineItems
Namespace Prefix:	rio_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration