XML 68 R56.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Condensed Consolidating Financial Information (Cash Flows) (Details) - USD ($) $ in Thousands | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Cash flows from operating activities |  |  |  |
Net cash from operating activities | $ 195,234 | $ 160,261 |  |
Cash flows from investing activities |  |  |  |
Capital expenditures | (118,751) | (72,447) |  |
Net activity with affiliates | 0 | 0 |  |
Advances pursuant to development agreement | (35,108) | 0 |  |
Other investing activities | 492 | 704 |  |
Net cash used in investing activities | (153,367) | (71,743) |  |
Cash flows from financing activities |  |  |  |
Borrowings under bank credit facility | 535,900 | 388,900 |  |
Payments under bank credit facility | (628,037) | (747,575) |  |
Proceeds from issuance of senior notes | 0 | 750,000 |  |
Debt issue costs | (2,381) | (12,936) |  |
Net activity with affiliates | 0 | 0 |  |
Share-based compensation activities, net | (2,796) | (104) |  |
Stock Repurchased and Retired During Period, Value | (11,090) | 0 |  |
Proceeds from (Payments for) Combined Other Financing Activities | (95) |  |  |
Net cash provided by (used in) financing activities | (108,499) | 378,285 |  |
Cash flows from operating activities | (514) | 2,654 |  |
Cash flows from investing activities | 36,247 | 0 |  |
Cash flows from financing activities | 0 | 0 |  |
Net cash provided by discontinued operations | 35,733 | 2,654 |  |
Cash and cash equivalents, beginning of period | 193,862 | 158,821 |  |
Cash and cash equivalents, end of period | (193,862) | (158,821) | $ (162,963) | $ (628,278)
Net change in cash and cash equivalents | (30,899) | 469,457 |  |
Parent |  |  |  |
Cash flows from operating activities |  |  |  |
Net cash from operating activities | (32,014) | (59,978) |  |
Cash flows from investing activities |  |  |  |
Capital expenditures | (68,685) | (19,456) |  |
Net activity with affiliates | 0 | 0 |  |
Advances pursuant to development agreement | 0 |  |  |
Other investing activities | 0 | 0 |  |
Net cash used in investing activities | (68,685) | (19,456) |  |
Cash flows from financing activities |  |  |  |
Borrowings under bank credit facility | 535,900 | 223,900 |  |
Payments under bank credit facility | (628,037) | (530,350) |  |
Proceeds from issuance of senior notes |  | 750,000 |  |
Debt issue costs | (2,381) | (12,936) |  |
Net activity with affiliates | 207,941 | 161,524 |  |
Share-based compensation activities, net | (2,796) | (104) |  |
Stock Repurchased and Retired During Period, Value | (11,090) |  |  |
Proceeds from (Payments for) Combined Other Financing Activities | (50) |  |  |
Net cash provided by (used in) financing activities | 99,487 | 592,034 |  |
Cash flows from operating activities | 0 | 0 |  |
Cash flows from investing activities | 0 | 0 |  |
Cash flows from financing activities | 0 | 0 |  |
Net cash provided by discontinued operations | 0 | 0 |  |
Cash and cash equivalents, beginning of period | 1,212 | 2 |  |
Cash and cash equivalents, end of period | (1,212) | (2) | 0 | (512,602)
Net change in cash and cash equivalents | (1,212) | 512,600 |  |
Guarantor Subsidiaries |  |  |  |
Cash flows from operating activities |  |  |  |
Net cash from operating activities | 235,898 | 210,976 |  |
Cash flows from investing activities |  |  |  |
Capital expenditures | (49,966) | (52,470) |  |
Net activity with affiliates | (250,886) | (152,274) |  |
Advances pursuant to development agreement | 0 |  |  |
Other investing activities | 492 | 704 |  |
Net cash used in investing activities | (300,360) | (204,040) |  |
Cash flows from financing activities |  |  |  |
Borrowings under bank credit facility | 0 | 165,000 |  |
Payments under bank credit facility | 0 | (217,225) |  |
Proceeds from issuance of senior notes |  | 0 |  |
Debt issue costs | 0 | 0 |  |
Net activity with affiliates | 0 | 0 |  |
Share-based compensation activities, net | 0 | 0 |  |
Stock Repurchased and Retired During Period, Value | 0 |  |  |
Proceeds from (Payments for) Combined Other Financing Activities | (45) |  |  |
Net cash provided by (used in) financing activities | (45) | (52,225) |  |
Cash flows from operating activities | (514) | 2,654 |  |
Cash flows from investing activities | 36,247 | 0 |  |
Cash flows from financing activities | 0 | 0 |  |
Net cash provided by discontinued operations | 35,733 | 2,654 |  |
Cash and cash equivalents, beginning of period | 189,364 | 156,116 |  |
Cash and cash equivalents, end of period | (189,364) | (156,116) | (160,590) | (113,481)
Net change in cash and cash equivalents | (28,774) | (42,635) |  |
Non-Guarantor Subsidiaries (100% Owned) |  |  |  |
Cash flows from operating activities |  |  |  |
Net cash from operating activities | (10,027) | 9,283 |  |
Cash flows from investing activities |  |  |  |
Capital expenditures | (100) | (521) |  |
Net activity with affiliates | 0 | 0 |  |
Advances pursuant to development agreement | (35,108) |  |  |
Other investing activities | 0 | 0 |  |
Net cash used in investing activities | (35,208) | (521) |  |
Cash flows from financing activities |  |  |  |
Borrowings under bank credit facility | 0 | 0 |  |
Payments under bank credit facility | 0 | 0 |  |
Proceeds from issuance of senior notes |  | 0 |  |
Debt issue costs | 0 | 0 |  |
Net activity with affiliates | 44,322 | (9,270) |  |
Share-based compensation activities, net | 0 | 0 |  |
Stock Repurchased and Retired During Period, Value | 0 |  |  |
Proceeds from (Payments for) Combined Other Financing Activities | 0 |  |  |
Net cash provided by (used in) financing activities | 44,322 | (9,270) |  |
Cash flows from operating activities | 0 | 0 |  |
Cash flows from investing activities | 0 | 0 |  |
Cash flows from financing activities | 0 | 0 |  |
Net cash provided by discontinued operations | 0 | 0 |  |
Cash and cash equivalents, beginning of period | 3,286 | 2,482 |  |
Cash and cash equivalents, end of period | (3,286) | (2,482) | (2,373) | (1,974)
Net change in cash and cash equivalents | (913) | (508) |  |
Non-Guarantor Subsidiaries (Not 100% Owned) |  |  |  |
Cash flows from operating activities |  |  |  |
Net cash from operating activities | 254 | 0 |  |
Cash flows from investing activities |  |  |  |
Capital expenditures | 0 | 0 |  |
Net activity with affiliates | 0 | 0 |  |
Advances pursuant to development agreement | 0 |  |  |
Other investing activities | 0 | 0 |  |
Net cash used in investing activities | 0 | 0 |  |
Cash flows from financing activities |  |  |  |
Borrowings under bank credit facility | 0 | 0 |  |
Payments under bank credit facility | 0 | 0 |  |
Proceeds from issuance of senior notes |  | 0 |  |
Debt issue costs | 0 | 0 |  |
Net activity with affiliates | (254) | 0 |  |
Share-based compensation activities, net | 0 | 0 |  |
Stock Repurchased and Retired During Period, Value | 0 |  |  |
Proceeds from (Payments for) Combined Other Financing Activities | 0 |  |  |
Net cash provided by (used in) financing activities | (254) | 0 |  |
Cash flows from operating activities | 0 | 0 |  |
Cash flows from investing activities | 0 | 0 |  |
Cash flows from financing activities | 0 | 0 |  |
Net cash provided by discontinued operations | 0 | 0 |  |
Cash and cash equivalents, beginning of period | 0 | 221 |  |
Cash and cash equivalents, end of period | 0 | (221) | 0 | (221)
Net change in cash and cash equivalents | 0 | 0 |  |
Eliminations |  |  |  |
Cash flows from operating activities |  |  |  |
Net cash from operating activities | 1,123 | (20) |  |
Cash flows from investing activities |  |  |  |
Capital expenditures | 0 | 0 |  |
Net activity with affiliates | 250,886 | 152,274 |  |
Advances pursuant to development agreement | 0 |  |  |
Other investing activities | 0 | 0 |  |
Net cash used in investing activities | 250,886 | 152,274 |  |
Cash flows from financing activities |  |  |  |
Borrowings under bank credit facility | 0 | 0 |  |
Payments under bank credit facility | 0 | 0 |  |
Proceeds from issuance of senior notes |  | 0 |  |
Debt issue costs | 0 | 0 |  |
Net activity with affiliates | (252,009) | (152,254) |  |
Share-based compensation activities, net | 0 | 0 |  |
Stock Repurchased and Retired During Period, Value | 0 |  |  |
Proceeds from (Payments for) Combined Other Financing Activities | 0 |  |  |
Net cash provided by (used in) financing activities | (252,009) | (152,254) |  |
Cash flows from operating activities | 0 | 0 |  |
Cash flows from investing activities | 0 | 0 |  |
Cash flows from financing activities | 0 | 0 |  |
Net cash provided by discontinued operations | 0 | 0 |  |
Cash and cash equivalents, beginning of period | 0 | 0 |  |
Cash and cash equivalents, end of period | 0 | 0 | $ 0 | $ 0
Net change in cash and cash equivalents | $ 0 | $ 0 |  |

X
- Definition Net Financing Activity with Affiliates + References No definition available. + Details
Name: | byd_NetFinancingActivitywithAffiliates
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Net Investing Activity with Affiliates + References No definition available. + Details
Name: | byd_NetInvestingActivitywithAffiliates
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Payments to (Proceeds from) Combined Other Investing Activities + References No definition available. + Details
Name: | byd_PaymentsToProceedsFromCombinedOtherInvestingActivities
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Proceeds from Combined Lines of Credit + References No definition available. + Details
Name: | byd_ProceedsFromCombinedLinesOfCredit
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Proceeds from (Payments for) Combined Other Financing Activities + References No definition available. + Details
Name: | byd_ProceedsFromPaymentsForCombinedOtherFinancingActivities
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Proceeds (Payments) from Investments in Development Agreement + References No definition available. + Details
Name: | byd_ProceedsPaymentsfromInvestmentsinDevelopmentAgreement
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Repayments of Combined Lines of Credit + References No definition available. + Details
Name: | byd_RepaymentsOfCombinedLinesOfCredit
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Share-based compensation activities, net + References No definition available. + Details
Name: | byd_Sharebasedcompensationactivitiesnet
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3044-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_CashAndCashEquivalentsAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 230 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49171198&loc=d3e33268-110906 + Details
Name: | us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of cash inflow (outflow) of financing activities of discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3521-108585 + Details
Name: | us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of cash inflow (outflow) of investing activities of discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721673-107760 + Details
Name: | us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of cash inflow (outflow) of operating activities of discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721673-107760 + Details
Name: | us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Increase (decrease) in cash associated with the entity's discontinued operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3521-108585 + Details
Name: | us-gaap_NetCashProvidedByUsedInDiscontinuedOperations
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3574-108585 + Details
Name: | us-gaap_NetCashProvidedByUsedInFinancingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3574-108585 + Details
Name: | us-gaap_NetCashProvidedByUsedInInvestingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3521-108585 Reference 2: 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=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3536-108585 + Details
Name: | us-gaap_NetCashProvidedByUsedInOperatingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsOfDebtIssuanceCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + 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 (c) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 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(28)) -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 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_StockRepurchasedAndRetiredDuringPeriodValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Details
Name: | dei_LegalEntityAxis=us-gaap_GuarantorSubsidiariesMember
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: |