XML 646 R155.htm IDEA: XBRL DOCUMENT v3.22.0.1

Financial instruments and risk management - Capital and liquidity risk - Additional information (Detail) $ in Millions			12 Months Ended
	Nov. 16, 2021 USD ($) extension	Oct. 28, 2021 USD ($)	Dec. 31, 2021 USD ($) times	Dec. 31, 2020 USD ($) times	Dec. 31, 2019 USD ($)
Disclosure of detailed information about financial instruments [line items]
Net debt of the group			$ 1,576	$ (664)	$ (3,651)
Borrowings			13,531	13,831
Buy-back of bonds			1,200
Notional amount			1,377	1,522
Rio Tinto Finance (USA) plc Bonds 2.75% 2051
Disclosure of detailed information about financial instruments [line items]
Borrowings		$ 1,250	$ 1,225	0
Borrowings, interest rate		2.75%	2.75%
Rio Tinto Finance (USA) plc Bonds 2.75% 2051 | Fixed interest rate
Disclosure of detailed information about financial instruments [line items]
Borrowings term		30 years
Liquidity risk
Disclosure of detailed information about financial instruments [line items]
Net debt of the group			$ (1,600)	$ 700
Net debt to total capital percentage			(3.00%)	1.00%
Interest cover | times			59	39
Liquidity risk | Maximum
Disclosure of detailed information about financial instruments [line items]
Increase in net cash			$ 2,200
Liquidity risk | Credit facility due November 2026
Disclosure of detailed information about financial instruments [line items]
Borrowings	$ 7,500
Borrowings term	5 years
Borrowings, Number Of Consecutive Extensions | extension	2
Borrowings, Extension Term	1 year
Liquidity risk | Same Day Access Swing-Line Facility
Disclosure of detailed information about financial instruments [line items]
Notional amount	$ 6,200
Capital and liquidity risk management
Disclosure of detailed information about financial instruments [line items]
Net debt of the group			$ 1,576	$ (664)
Bottom of range | Liquidity risk
Disclosure of detailed information about financial instruments [line items]
Percentage of underlying earnings			40.00%
Top of range | Liquidity risk
Disclosure of detailed information about financial instruments [line items]
Percentage of underlying earnings			60.00%

X

- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_Borrowings
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2021-01-01
-Paragraph 7
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_7&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_BorrowingsInterestRate
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

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

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfFinancialInstrumentsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of net debt of the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_NetDebt
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_NotionalAmount
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The cash outflow for repayments of bonds, notes and debentures.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2021-01-01
-Paragraph 17
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&anchor=para_17&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_RepaymentsOfBondsNotesAndDebentures
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Aggregate Rate of Cash Returns to Shareholders, Percentage

+ References

No definition available.

+ Details

Name:	rio_AggregateRateofCashReturnstoShareholdersPercentage
Namespace Prefix:	rio_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Borrowings, Extension Term

+ References

No definition available.

+ Details

Name:	rio_BorrowingsExtensionTerm
Namespace Prefix:	rio_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Borrowings, Number Of Consecutive Extensions

+ References

No definition available.

+ Details

Name:	rio_BorrowingsNumberOfConsecutiveExtensions
Namespace Prefix:	rio_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Borrowings, Term

+ References

No definition available.

+ Details

Name:	rio_BorrowingsTerm
Namespace Prefix:	rio_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Increase (Decrease) In Net Cash

+ References

No definition available.

+ Details

Name:	rio_IncreaseDecreaseInNetCash
Namespace Prefix:	rio_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Interest Cover Times

+ References

No definition available.

+ Details

Name:	rio_InterestCoverTimes
Namespace Prefix:	rio_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Net debt to capital percentage.

+ References

No definition available.

+ Details

Name:	rio_NetDebtToCapitalPercentage
Namespace Prefix:	rio_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=rio_RioTintoFinanceUSALimitedBondsTwoPointSevenFiveTwoThousandAndFiftyOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=ifrs-full_FixedInterestRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfRisksAxis=ifrs-full_LiquidityRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=rio_CreditFacilityDueNovember2026Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=rio_SameDayAccessSwingLineFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfRisksAxis=rio_CapitalAndLiquidityRiskManagementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: