XML 119 R109.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Condensed Consolidating Financial Information (Income Statements) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net Revenues | $ 595,088 | $ 591,542 | $ 604,124 | $ 610,065 | $ 558,649 | $ 535,173 | $ 548,784 | $ 556,653 | $ 2,400,819 | $ 2,199,259 | $ 2,214,831
Costs and Expenses |  |  |  |  |  |  |  |  |  |  |
Operating |  |  |  |  |  |  |  |  | 1,263,921 | 1,186,985 | 1,205,589
Selling, general and administrative |  |  |  |  |  |  |  |  | 362,037 | 322,259 | 322,672
Maintenance and utilities |  |  |  |  |  |  |  |  | 109,462 | 100,020 | 104,548
Depreciation and amortization |  |  |  |  |  |  |  |  | 217,522 | 196,226 | 207,118
Corporate expense |  |  |  |  |  |  |  |  | 88,148 | 72,668 | 76,941
Project development, preopening and writedowns |  |  |  |  |  |  |  |  | 14,454 | 22,107 | 6,907
Impairments of assets |  |  |  |  |  |  |  |  | (426) | 38,302 | 18,565
Other operating charges, net |  |  |  |  |  |  |  |  | 1,900 | 284 | 907
Intercompany expenses |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total operating costs and expenses |  |  |  |  |  |  |  |  | 2,057,018 | 1,938,851 | 1,943,247
Equity in earnings (losses) of subsidiaries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Operating income | 80,477 | 78,940 | 89,554 | 94,830 | 29,726 | 67,881 | 80,439 | 82,362 | 343,801 | 260,408 | 271,584
Other expense (income) |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  | 171,290 | 209,731 | 222,732
Loss on early extinguishments and modifications of debt |  |  |  |  |  |  |  |  | 1,582 | 42,364 | 40,733
Other, net |  |  |  |  |  |  |  |  | (184) | 545 | 3,676
Total other expense, net |  |  |  |  |  |  |  |  | 172,688 | 252,640 | 267,141
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | 171,113 | 7,768 | 4,443
Income tax (provision) benefit |  |  |  |  |  |  |  |  | 3,115 | (199,933) | (6,625)
Income from continuing operations, net of tax | 82,073 | 23,157 | 27,692 | 35,076 | 10,581 | 164,197 | 11,257 | 21,666 | 167,998 | 207,701 | 11,068
Income from discontinued operations, net of tax | 0 | 0 | 21,017 | 375 | 1,478 | 180,707 | 18,715 | 11,630 | 21,392 | 212,530 | 36,539
Net income |  |  |  |  |  |  |  |  | 189,390 | 420,231 | 47,607
Net Income (Loss) Attributable to Parent | $ 82,073 | $ 23,157 | $ 48,709 | $ 35,451 | $ 12,059 | $ 344,904 | $ 29,972 | $ 33,296 | 189,390 | 420,231 | 47,607
Comprehensive income |  |  |  |  |  |  |  |  | 189,823 | 419,932 | 47,344
Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net Revenues |  |  |  |  |  |  |  |  | 2,377,514 | 2,176,788 | 2,194,440
Costs and Expenses |  |  |  |  |  |  |  |  |  |  |
Operating |  |  |  |  |  |  |  |  | 1,225,765 | 1,148,170 | 1,165,834
Selling, general and administrative |  |  |  |  |  |  |  |  | 354,423 | 265,735 | 267,913
Maintenance and utilities |  |  |  |  |  |  |  |  | 108,092 | 98,741 | 103,086
Depreciation and amortization |  |  |  |  |  |  |  |  | 201,401 | 183,531 | 196,865
Corporate expense |  |  |  |  |  |  |  |  | 1,140 | 1,738 | 1,781
Project development, preopening and writedowns |  |  |  |  |  |  |  |  | 2,912 | (3,292) | 2,351
Impairments of assets |  |  |  |  |  |  |  |  | 1 | 36,862 | 17,500
Other operating charges, net |  |  |  |  |  |  |  |  | 1,175 | 103 | 308
Intercompany expenses |  |  |  |  |  |  |  |  | (91,411) | (140,671) | (140,971)
Total operating costs and expenses |  |  |  |  |  |  |  |  | 1,986,320 | 1,872,259 | 1,896,609
Equity in earnings (losses) of subsidiaries |  |  |  |  |  |  |  |  | (1,374) | (2,039) | (2,204)
Operating income |  |  |  |  |  |  |  |  | 389,820 | 302,490 | 295,627
Other expense (income) |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  | 1,275 | 51,783 | 96,818
Loss on early extinguishments and modifications of debt |  |  |  |  |  |  |  |  | 0 | 14,008 | 9,904
Other, net |  |  |  |  |  |  |  |  | (98) | 617 | 2,959
Total other expense, net |  |  |  |  |  |  |  |  | 1,177 | 66,408 | 109,681
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | 388,643 | 236,082 | 185,946
Income tax (provision) benefit |  |  |  |  |  |  |  |  | 73,426 | (12,852) | 16,098
Income from continuing operations, net of tax |  |  |  |  |  |  |  |  | 315,217 | 248,934 | 169,848
Income from discontinued operations, net of tax |  |  |  |  |  |  |  |  | 21,392 | 212,530 | 36,539
Net income |  |  |  |  |  |  |  |  | 336,609 | 461,464 | 206,387
Comprehensive income |  |  |  |  |  |  |  |  | 337,042 | 461,165 | 206,124
Parent Company [Member] |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net Revenues |  |  |  |  |  |  |  |  | 73,292 | 121,939 | 121,541
Costs and Expenses |  |  |  |  |  |  |  |  |  |  |
Operating |  |  |  |  |  |  |  |  | 0 | 1,200 | 1,800
Selling, general and administrative |  |  |  |  |  |  |  |  | 44 | 49,938 | 48,173
Maintenance and utilities |  |  |  |  |  |  |  |  | 0 | 0 | 0
Depreciation and amortization |  |  |  |  |  |  |  |  | 12,041 | 8,767 | 6,179
Corporate expense |  |  |  |  |  |  |  |  | 85,362 | 66,703 | 71,700
Project development, preopening and writedowns |  |  |  |  |  |  |  |  | 7,806 | 18,079 | 884
Impairments of assets |  |  |  |  |  |  |  |  | 600 | 1,440 | 0
Other operating charges, net |  |  |  |  |  |  |  |  | 725 | 181 | 599
Intercompany expenses |  |  |  |  |  |  |  |  | (1,204) | (1,205) | (1,204)
Total operating costs and expenses |  |  |  |  |  |  |  |  | 107,782 | 147,513 | 130,539
Equity in earnings (losses) of subsidiaries |  |  |  |  |  |  |  |  | 330,711 | 445,130 | 190,943
Operating income |  |  |  |  |  |  |  |  | 296,221 | 419,556 | 181,945
Other expense (income) |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  | 169,990 | 157,923 | 125,890
Loss on early extinguishments and modifications of debt |  |  |  |  |  |  |  |  | 1,582 | 28,356 | 30,829
Other, net |  |  |  |  |  |  |  |  | (16) | 1 | 396
Total other expense, net |  |  |  |  |  |  |  |  | 171,556 | 186,280 | 157,115
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | 124,665 | 233,276 | 24,830
Income tax (provision) benefit |  |  |  |  |  |  |  |  | (64,725) | (186,955) | (22,777)
Income from continuing operations, net of tax |  |  |  |  |  |  |  |  | 189,390 | 420,231 | 47,607
Income from discontinued operations, net of tax |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net income |  |  |  |  |  |  |  |  | 189,390 | 420,231 | 47,607
Comprehensive income |  |  |  |  |  |  |  |  | 189,823 | 419,932 | 47,344
Non-Guarantor Subsidiaries (100% Owned) |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net Revenues |  |  |  |  |  |  |  |  | 42,670 | 43,867 | 42,459
Costs and Expenses |  |  |  |  |  |  |  |  |  |  |
Operating |  |  |  |  |  |  |  |  | 38,156 | 37,615 | 37,955
Selling, general and administrative |  |  |  |  |  |  |  |  | 7,612 | 6,584 | 6,604
Maintenance and utilities |  |  |  |  |  |  |  |  | 1,370 | 1,279 | 1,462
Depreciation and amortization |  |  |  |  |  |  |  |  | 4,080 | 3,928 | 4,074
Corporate expense |  |  |  |  |  |  |  |  | 1,646 | 4,227 | 3,460
Project development, preopening and writedowns |  |  |  |  |  |  |  |  | 3,736 | 7,320 | 3,596
Impairments of assets |  |  |  |  |  |  |  |  | (1,027) | 0 | 1,065
Other operating charges, net |  |  |  |  |  |  |  |  | 0 | 0 | 0
Intercompany expenses |  |  |  |  |  |  |  |  | 0 | (1,461) | (1,416)
Total operating costs and expenses |  |  |  |  |  |  |  |  | 55,573 | 62,414 | 59,632
Equity in earnings (losses) of subsidiaries |  |  |  |  |  |  |  |  | 0 | 0 | (76)
Operating income |  |  |  |  |  |  |  |  | (12,903) | (18,547) | (17,249)
Other expense (income) |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  | 25 | 25 | 24
Loss on early extinguishments and modifications of debt |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other, net |  |  |  |  |  |  |  |  | (70) | (73) | 321
Total other expense, net |  |  |  |  |  |  |  |  | (45) | (48) | 345
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | (12,858) | (18,499) | (17,594)
Income tax (provision) benefit |  |  |  |  |  |  |  |  | (5,586) | (126) | 54
Income from continuing operations, net of tax |  |  |  |  |  |  |  |  | (7,272) | (18,373) | (17,648)
Income from discontinued operations, net of tax |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net income |  |  |  |  |  |  |  |  | (7,272) | (18,373) | (17,648)
Comprehensive income |  |  |  |  |  |  |  |  | (7,272) | (18,373) | (17,648)
Non-Guarantor Subsidiaries (Not 100% Owned) |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net Revenues |  |  |  |  |  |  |  |  | 0 | 0 | 0
Costs and Expenses |  |  |  |  |  |  |  |  |  |  |
Operating |  |  |  |  |  |  |  |  | 0 | 0 | 0
Selling, general and administrative |  |  |  |  |  |  |  |  | 0 | 0 | 0
Maintenance and utilities |  |  |  |  |  |  |  |  | 0 | 0 | 0
Depreciation and amortization |  |  |  |  |  |  |  |  | 0 | 0 | 0
Corporate expense |  |  |  |  |  |  |  |  | 0 | 0 | 0
Project development, preopening and writedowns |  |  |  |  |  |  |  |  | 0 | 0 | 76
Impairments of assets |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other operating charges, net |  |  |  |  |  |  |  |  | 0 | 0 | 0
Intercompany expenses |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total operating costs and expenses |  |  |  |  |  |  |  |  | 0 | 0 | 76
Equity in earnings (losses) of subsidiaries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Operating income |  |  |  |  |  |  |  |  | 0 | 0 | (76)
Other expense (income) |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  | 0 | 0 | 0
Loss on early extinguishments and modifications of debt |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other, net |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total other expense, net |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | 0 | 0 | (76)
Income tax (provision) benefit |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income from continuing operations, net of tax |  |  |  |  |  |  |  |  | 0 | 0 | (76)
Income from discontinued operations, net of tax |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net income |  |  |  |  |  |  |  |  | 0 | 0 | (76)
Comprehensive income |  |  |  |  |  |  |  |  | 0 | 0 | (76)
Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net Revenues |  |  |  |  |  |  |  |  | (92,657) | (143,335) | (143,609)
Costs and Expenses |  |  |  |  |  |  |  |  |  |  |
Operating |  |  |  |  |  |  |  |  | 0 | 0 | 0
Selling, general and administrative |  |  |  |  |  |  |  |  | (42) | 2 | (18)
Maintenance and utilities |  |  |  |  |  |  |  |  | 0 | 0 | 0
Depreciation and amortization |  |  |  |  |  |  |  |  | 0 | 0 | 0
Corporate expense |  |  |  |  |  |  |  |  | 0 | 0 | 0
Project development, preopening and writedowns |  |  |  |  |  |  |  |  | 0 | 0 | 0
Impairments of assets |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other operating charges, net |  |  |  |  |  |  |  |  | 0 | 0 | 0
Intercompany expenses |  |  |  |  |  |  |  |  | 92,615 | 143,337 | 143,591
Total operating costs and expenses |  |  |  |  |  |  |  |  | (92,657) | (143,335) | (143,609)
Equity in earnings (losses) of subsidiaries |  |  |  |  |  |  |  |  | (329,337) | (443,091) | (188,663)
Operating income |  |  |  |  |  |  |  |  | (329,337) | (443,091) | (188,663)
Other expense (income) |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  | 0 | 0 | 0
Loss on early extinguishments and modifications of debt |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other, net |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total other expense, net |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | (329,337) | (443,091) | (188,663)
Income tax (provision) benefit |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income from continuing operations, net of tax |  |  |  |  |  |  |  |  | (329,337) | (443,091) | (188,663)
Income from discontinued operations, net of tax |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net income |  |  |  |  |  |  |  |  | (329,337) | (443,091) | (188,663)
Comprehensive income |  |  |  |  |  |  |  |  | $ (329,770) | $ (442,792) | $ (188,400)

X
- Definition Casino, Food and Beverage, Occupancy, Entertainment, Retail and Other Costs + References No definition available. + Details
Name: | byd_CasinoFoodAndBeverageOccupancyEntertainmentRetailAndOtherCosts
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Corporate expense + References No definition available. + Details
Name: | byd_CorporateExpense
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Equity in Earnings of Subsidiaries + References No definition available. + Details
Name: | byd_EquityInEarningsOfSubsidiaries
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Gain loss on early retirements of debt + References No definition available. + Details
Name: | byd_GainLossOnEarlyRetirementsOfDebt
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Intercompany expenses + References No definition available. + Details
Name: | byd_Intercompanyexpenses
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Property maintenance and utility costs + References No definition available. + Details
Name: | byd_PropertyMaintenanceAndUtilityCosts
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_AssetImpairmentCharges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4569616-111683 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=84234705&loc=SL4591552-111686 + Details
Name: | us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Definition Total costs of sales and operating expenses for the period. + 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) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_CostsAndExpenses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CostsAndExpensesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_DepreciationAndAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=68072869&loc=d3e41242-110953 Reference 2: 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(10)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(15)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(8)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 + Details
Name: | us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount after tax of income (loss) from continuing operations including portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4569616-111683 + Details
Name: | us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5C -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721675-107760 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=65878427&loc=SL51721525-107759 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=65878427&loc=SL51721523-107759 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=65878427&loc=d3e957-107759 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=65878427&loc=d3e1012-107759 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1361-107760 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721673-107760 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4569616-111683 + Details
Name: | us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The net amount of nonoperating interest income (expense). + References No definition available. + Details
Name: | us-gaap_InterestIncomeExpenseNonoperatingNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(22)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(18)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 5: 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(20)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_NetIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). + 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 210.5-03.7) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_NonoperatingIncomeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_NonoperatingIncomeExpenseAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
Name: | us-gaap_OperatingIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation. + 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=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_OtherCostAndExpenseOperating
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of income (expense) related to nonoperating activities, classified as other. + 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 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_OtherNonoperatingIncomeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Expenditures associated with opening new locations which are noncapital in nature and expensed as incurred. + 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=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_PreOpeningCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=84234705&loc=SL4591552-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4569616-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84161450&loc=SL4573702-111684 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=84234705&loc=SL4591551-111686 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=84161450&loc=SL4573702-111684 + Details
Name: | us-gaap_ProfitLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + 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 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_SalesRevenueNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. + 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 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=68048583&loc=d3e3636-108311 + Details
Name: | us-gaap_SellingGeneralAndAdministrativeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_ConsolidatedEntitiesAxis=us-gaap_GuarantorSubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | dei_LegalEntityAxis=byd_NonGuarantorSubsidiariesWhollyOwnedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=byd_NonGuarantorSubsidiariesLessThanWhollyOwnedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=byd_EliminationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |