XML 40 R30.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Goodwill (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Goodwill [Abstract] |
Goodwill Rollforward [Table Text Block] | The following table sets forth the changes in our goodwill, net, during the years ended December 31, 2017, 2016 and 2015.
(In thousands) |  | Goodwill, Net
Balance, January 1, 2015 |  | $ | 685,310 |
Additions |  | — |
Impairments |  | — |
Balance, December 31, 2015 |  | 685,310 |
Additions |  | 153,628 |
Impairments |  | (12,462 | )
Balance, December 31, 2016 |  | 826,476 |
Additions |  | — |
Impairments |  | — |
Final purchase price adjustment |  | 61,748 |
Balance, December 31, 2017 |  | $ | 888,224 |
Schedule of Goodwill By Segment [Table Text Block] | Goodwill consists of the following:
(In thousands) | Gross Carrying Value |  | Cumulative Amortization |  | Cumulative Impairment Losses |  | Goodwill, Net
Goodwill, net by Reportable Segment: |  |  |  |  |  |  |
Las Vegas Locals | $ | 593,567 |  |  | $ | — |  |  | $ | (165,479 | ) |  | $ | 428,088 |
Downtown Las Vegas | 6,997 |  |  | (6,134 | ) |  | — |  |  | 863 |
Midwest and South | 471,735 |  |  | — |  |  | (12,462 | ) |  | 459,273 |
Balance, December 31, 2017 | $ | 1,072,299 |  |  | $ | (6,134 | ) |  | $ | (177,941 | ) |  | $ | 888,224 |

X
- Definition Goodwill [Abstract] + References No definition available. + Details
Name: | byd_GoodwillAbstract
Namespace Prefix: | byd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition [Table Text Block] for Goodwill Rollforward [Table] + References No definition available. + Details
Name: | byd_GoodwillRollforwardTableTextBlock
Namespace Prefix: | byd_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of Goodwill By Segment [Table Text Block] + References No definition available. + Details
Name: | byd_ScheduleOfGoodwillBySegmentTableTextBlock
Namespace Prefix: | byd_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration