v2.4.0.8

Long-Term Debt (Schedule of Long-term Debt) (Details) (USD $) | Sep. 30, 2013 | Dec. 31, 2012
--- | --- | ---
Debt Instrument [Line Items] |  |
Unamortized discount | $ (25,391,000) | $ (42,298,000)
Unamortized origination fees | (21,793,000) | (24,082,000)
Current maturities of long-term debt | 29,759,000 | 61,570,000
Long-term debt, gross, excluding current maturities | 4,360,168,000 | 4,894,233,000
Long-term debt, net of current maturities | 4,312,984,000 | 4,827,853,000
Parent |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross | 3,621,927,000 | 4,144,303,000
Unamortized discount | (21,773,000) | (37,670,000)
Unamortized origination fees | (10,892,000) | (10,534,000)
Long-term debt, net | 3,589,262,000 | 4,096,099,000
Current maturities of long-term debt | 21,500,000 | 42,500,000
Long-term debt, net of current maturities | 2,265,508,000 | 2,723,234,000
Parent | Bank Credit Facility |  |
Debt Instrument [Line Items] |  |
Amount outstanding | 1,443,400,000 | 1,466,635,000
Remaining borrowing capacity | 293,600,000 |
Long-term Debt, Gross |  | 1,474,850,000
Unamortized discount |  | (5,001,000)
Unamortized origination fees |  | (3,214,000)
Long-term debt, net |  | 1,466,635,000
Parent | Senior Notes | 9.125% Senior Notes Due 2018 |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross |  | 500,000,000
Unamortized discount |  | 0
Unamortized origination fees |  | (7,320,000)
Long-term debt, net |  | 492,680,000
Parent | Senior Subordinated Notes | 6.75% Senior Subordinated Notes Due 2014 |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross |  | 215,668,000
Unamortized discount |  | 0
Unamortized origination fees |  | 0
Long-term debt, net |  | 215,668,000
Parent | Senior Subordinated Notes | 7.125% Senior Subordinated Notes Due 2016 |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross |  | 240,750,000
Unamortized discount |  | 0
Unamortized origination fees |  | 0
Long-term debt, net |  | 240,750,000
Parent | Other |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross |  | 158,141,000
Unamortized discount |  | (32,666,000)
Unamortized origination fees |  | 0
Long-term debt, net |  | 125,475,000
Subsidiary, Borgata |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross | 768,000,000 | 811,500,000
Unamortized discount | (3,618,000) | (4,628,000)
Unamortized origination fees | (10,901,000) | (13,548,000)
Long-term debt, net | 753,481,000 | 793,324,000
Subsidiary, Borgata | Bank Credit Facility |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross | 16,300,000 | 20,000,000
Unamortized discount | 0 | 0
Unamortized origination fees | 0 | 0
Long-term debt, net | 16,300,000 | 20,000,000
Subsidiary, Borgata | Senior Secured Notes | 9.50% Senior Secured Notes Due 2015 |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross | 358,200,000 | 398,000,000
Unamortized discount | (1,731,000) | (2,525,000)
Unamortized origination fees | (4,064,000) | (5,928,000)
Long-term debt, net | 352,405,000 | 389,547,000
Subsidiary, Borgata | Senior Secured Notes | 9.875% Senior Secured Notes Due 2018 |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross | 393,500,000 | 393,500,000
Unamortized discount | (1,887,000) | (2,103,000)
Unamortized origination fees | (6,837,000) | (7,620,000)
Long-term debt, net | 384,776,000 | 383,777,000
Standard Financing | Parent |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross | 2,445,700,000 | 2,939,409,000
Unamortized discount | (21,773,000) | (37,667,000)
Unamortized origination fees | (10,892,000) |
Long-term debt, net | 2,413,035,000 | 2,891,208,000
Standard Financing | Parent | Bank Credit Facility |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross | 1,447,900,000 |
Unamortized discount | 0 |
Unamortized origination fees | (4,500,000) |
Long-term debt, net | 1,443,400,000 |
Standard Financing | Parent | Senior Notes | 9.125% Senior Notes Due 2018 |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross | 500,000,000 |
Unamortized discount | 0 |
Unamortized origination fees | (6,392,000) |
Long-term debt, net | 493,608,000 |
Standard Financing | Parent | Senior Notes | 9.00% Senior Notes Due 2020 |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross | 350,000,000 | 350,000,000
Unamortized discount | 0 | 0
Unamortized origination fees | 0 | 0
Long-term debt, net | 350,000,000 | 350,000,000
Standard Financing | Parent | Other |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross | 147,800,000 |
Unamortized discount | (21,773,000) |
Unamortized origination fees | 0 |
Long-term debt, net | 126,027,000 |
Acquisition Financing | Parent |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross | 1,176,227,000 | 1,204,894,000
Unamortized discount | 0 | 3,000
Unamortized origination fees | 0 | 0
Long-term debt, net | 1,176,227,000 | 1,204,891,000
Acquisition Financing | Parent | Bank Credit Facility |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross |  | 854,400,000
Unamortized discount | 0 | 0
Unamortized origination fees | 0 | 0
Long-term debt, net | 826,213,000 | 854,400,000
Acquisition Financing | Parent | Senior Notes | 8.375% Senior Notes due 2018 |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross | 350,000,000 | 350,000,000
Unamortized discount | 0 | 0
Unamortized origination fees | 0 | 0
Long-term debt, net | 350,000,000 | 350,000,000
Acquisition Financing | Parent | Other |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross | 14,000 | 494,000
Unamortized discount | 0 | (3,000)
Unamortized origination fees | 0 | 0
Long-term debt, net | $ 14,000 | $ 491,000

X
- Definition Debt Instrument, Unamortized Origination Fees + References No definition available. + Details
Name: | byd_DebtInstrumentUnamortizedOriginationFees
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Long-term Debt, Gross, Excluding Current Maturities + References No definition available. + Details
Name: | byd_LongTermDebtGrossExcludingCurrentMaturities
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: 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) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number APB14-1 -Paragraph 31 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number APB14-1 -Paragraph 31 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 21 -Paragraph 16, 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_DebtInstrumentUnamortizedDiscount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityAmountOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 2: 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) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 + Details
Name: | us-gaap_LongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying amount of long-term debt, net of unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + 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 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 + Details
Name: | us-gaap_LongTermDebtCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + 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) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 + Details
Name: | us-gaap_LongTermDebtNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant