Long-term Purchase Commitment, Amount Purchased

No definition available.

Name:	rba_LongTermPurchaseCommitmentAmountPurchased
Namespace Prefix:	rba_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Period covered by the long-term purchase commitment, for an option to extend in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	rba_LongTermPurchaseCommitmentPeriodOptionsToExtend
Namespace Prefix:	rba_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of one year renewal options.

+ References

No definition available.

+ Details

Name:	rba_NumberOfOneYearRenewalOptions
Namespace Prefix:	rba_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The minimum amount the entity agreed to spend under the long-term purchase commitment.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermPurchaseCommitmentAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermPurchaseCommitmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of units of goods that must be purchased within the specified time period of the agreement to avoid penalties or unfavorable effects on pricing, among other adverse consequences.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermPurchaseCommitmentMinimumQuantityRequired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Period covered by the long-term purchase commitment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_LongtermPurchaseCommitmentPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

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

- Details

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

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Commitments (Details)		1 Months Ended	6 Months Ended	14 Months Ended	24 Months Ended
Commitments (Details)	Jun. 01, 2021 USD ($) item	Dec. 31, 2017	Jun. 30, 2021 USD ($) item	May 31, 2021 USD ($)	May 31, 2023 USD ($) item
Commitments
Contract period for inventory purchase	2 years	2 years	2 years
Number of one year renewal options \| item	3
Period for options to extend contract period	1 year
Purchase commitment quantity \| item			19,813
Purchase commitment					$ 77,000,000
Purchase commitment amount purchased	$ 18,390,000		$ 4,244,000
Minimum [Member]
Commitments
Purchase commitment quantity				150,000
Purchase commitment				$ 11,104,000
Maximum [Member]
Commitments
Purchase commitment quantity				245,900
Purchase commitment				$ 51,028,000
Subsequent Events [Member]
Commitments
Purchase commitment quantity \| item					600,000