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Other Intangible Assets - Additional Information (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items] |  |  |
Amortization of definite-lived intangible assets | $ 52,900,000 | $ 56,100,000 | $ 13,300,000
Indefinite-lived intangible assets impairment | 0 |  |
Additional payments not included in future estimated amortization expense | 2,300,000 |  |
Strategic development |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, period increase (decrease) | (5,500,000) |  |
Table games license |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Definite-lived license agreements, gross | $ 200,000 |  |
Finite-lived intangible asset useful life | 20 years |  |
Calder |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets acquired | $ 2,300,000 | 2,300,000 |
TwinSpires | Customer Relationships |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, period increase (decrease) | (4,600,000) | $ (14,000,000) |
Big Fish Games | Customer Relationships |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, period increase (decrease) | (16,700,000) |  |
Casinos | Customer Relationships |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, period increase (decrease) | $ (10,800,000) |  |

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- Definition Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months through Year Five, Fees Not Yet Incurred or Paid + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 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=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275 + Details
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