Financial assistance provided by the company related to development financing loans.

No definition available.

Name:	byi_DevelopmentFinancingFinancialAssistanceProvided
Namespace Prefix:	byi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the amount of bond posted to display games unit at the G2E Asia gaming show by the entity's subsidiary.

+ References

No definition available.

+ Details

Name:	byi_LossContingencyAmountOfBondPostedToDisplayGamesUnit
Namespace Prefix:	byi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the period of repayment of monthly installment payments of amount related to a new note receivable related to financial assistance provided by a subsidiary of the entity.

+ References

No definition available.

+ Details

Name:	byi_PeriodOfRepaymentOfMonthlyInstallmentPaymentsOfNewNoteReceivableToEntity
Namespace Prefix:	byi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

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

- Definition

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

+ References

No definition available.

+ Details

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

- Details

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

- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 9

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349

+ Details

Name:	us-gaap_LossContingencyEstimateOfPossibleLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The estimated maximum amount of possible loss from the contingency.

+ References

+ Details

Name:	us-gaap_LossContingencyRangeOfPossibleLossMaximum
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The estimated minimum amount of possible loss from the contingency.

+ References

+ Details

Name:	us-gaap_LossContingencyRangeOfPossibleLossMinimum
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of expense related to royalty payments under a contractual arrangement such as payment for mineral and drilling rights and use of technology or intellectual property.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.3)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

Name:	us-gaap_RoyaltyExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

COMMITMENTS AND CONTINGENCIES (Details) In Millions, unless otherwise specified	12 Months Ended			0 Months Ended	12 Months Ended
	Jun. 30, 2014 USD ($)	Jun. 30, 2013 USD ($)	Jun. 30, 2012 USD ($)	Jul. 29, 2013 Breach of contract EUR (€)	Jun. 30, 2014 Breach of contract	Feb. 29, 2012 Breach of contract EUR (€)	May 31, 2012 Patent infringement lawsuit filed by Jay Chun against the Company USD ($)
COMMITMENTS AND CONTINGENCIES
Royalty expense	$ 27.6	$ 21.6	$ 20.8
Estimate of reasonably possible loss	0
Estimate of reasonably possible loss, minimum	0
Estimate of reasonably possible loss, maximum	0
Litigation
Financial assistance provided by the company						15
Settlement amount to be received in monthly installments				15
Period of repayment of monthly installment payments of new note receivable by HBG					4 years
Bond posted to display games unit at the G2E Asia Gaming Show by SHFL Asia							$ 0.1