The fair value of contingent consideration associated with the acquisition of business during the period.

No definition available.

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Namespace Prefix:	rba_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Period in which the company has an obligation to pay additional amounts, starting from the acquisition date

+ References

No definition available.

+ Details

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585

+ Details

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

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Namespace Prefix:
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- Details

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- Details

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Subsequent Event (Details) - USD ($) $ in Millions	Aug. 01, 2016	Jul. 12, 2016	Jun. 30, 2016
Ritchie Bros. Financial Services [Member]
Subsequent Event [Line Items]
Percentage ownership by non-controlling interest holders			49.00%
Ritchie Bros. Financial Services [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Percentage ownership by non-controlling interest holders		49.00%
Period to make additional amount of obligation upon achievement of certain condition		3 years
Project Gas [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Purchase price	$ 7
Additional cash compensation	$ 3