XML 125 R107.htm IDEA: XBRL DOCUMENT v3.8.0.1

Condensed Consolidating Financial Information (Narrative) (Details)	Dec. 31, 2017	Dec. 31, 2016	May 21, 2015	Nov. 10, 2010
For the year ending December 31,
Subsidiaries, Ownership Percentage	80.00%
Boyd
For the year ending December 31,
Subsidiaries, Ownership Percentage				100.00%
Boyd | Senior Notes | Senior Notes Due 2023 [Member]
For the year ending December 31,
Debt instrument, stated interest rate	6.875%	6.875%	6.875%	6.875%
Subsidiaries, Ownership Percentage			100.00%

X

- Definition

Subsidiaries, Ownership Percentage

+ References

No definition available.

+ Details

Name:	byd_SubsidiariesOwnershipPercentage
Namespace Prefix:	byd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

X

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

X

- Details

Name:	us-gaap_ConsolidatedEntitiesAxis=us-gaap_ParentCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=byd_SeniorNotesDue2023Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: