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Segment Information - Information About Reported Segments (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 USD ($) Segments | Sep. 30, 2015 USD ($) | Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($)
Segment Reporting Information [Line Items] |  |  |  |
Racing | $ 38.5 | $ 38.8 | $ 220.8 | $ 218.0
Casinos | 83.0 | 82.7 | 253.9 | 252.5
TwinSpires | 54.7 | 50.4 | 172.3 | 156.5
Big Fish Games | 122.3 | 103.6 | 369.6 | 300.0
Other Investments | 4.5 | 4.0 | 12.9 | 12.1
Corporate | $ 0.4 | 0.3 | 0.8 | 0.8
Number of Operating Segments | Segments | 6 |  |  |
Property, Plant and Equipment, Additions |  |  | 44.1 | 30.8
Net revenue from external customers | $ 303.4 | 279.8 | 1,030.3 | 939.9
Intercompany net revenues | 0.0 | 0.0 | 0.0 | 0.0
Total segment Adjusted EBITDA | 67.3 | 72.2 | 283.0 | 280.9
Adjusted Corporate EBITDA | (2.0) | (1.6) | (5.9) | (5.2)
Change in Big Fish Games deferred revenue | 3.8 | (10.9) | (5.0) | (32.0)
Stock-based compensation expense | (4.9) | (4.5) | (14.3) | (10.6)
Other charges | (3.1) | 0.0 | (3.4) | 0.0
Equity investments - interest, depreciation and amortization expense | (2.5) | (2.2) | (7.5) | (6.4)
Other (charges) and recoveries, net | 0.0 | (0.1) | (0.4) | 6.0
Big Fish Games acquisition expense | (1.1) | (2.8) | (4.9) | (17.4)
Calder exit costs | (0.5) | (12.7) | (2.4) | (13.5)
Depreciation and amortization | (27.5) | (27.4) | (81.4) | (82.1)
Interest (expense) income, net | (11.1) | (6.7) | (32.8) | (21.1)
Income before income tax provision | 20.4 | 4.9 | 130.9 | 103.8
Income tax provision | (11.7) | (0.7) | (49.6) | (46.1)
Net income | 8.7 | 4.2 | 81.3 | 57.7
Foreign currency translation, net of tax | 0.0 | 0.0 | 0.2 | (0.4)
Comprehensive income | 8.7 | 4.2 | 81.5 | 57.3
Racing Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Racing | 38.5 | 38.8 | 220.8 | 218.0
Property, Plant and Equipment, Additions |  |  | 23.4 | 8.3
Net revenue from external customers | 41.3 | 41.2 | 234.5 | 229.3
Intercompany net revenues | 2.8 | 2.4 | 13.7 | 11.3
Total segment Adjusted EBITDA | 0.4 | 0.3 | 84.3 | 76.3
Racing Segment [Member] | Churchill Downs |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Racing | 8.7 | 7.9 | 140.1 | 136.7
Intercompany net revenues | 0.9 | 0.7 | 8.2 | 6.3
Racing Segment [Member] | Arlington Park |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Racing | 24.0 | 25.0 | 49.8 | 48.9
Intercompany net revenues | 1.9 | 1.7 | 4.5 | 4.1
Racing Segment [Member] | Fair Grounds |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Racing | 5.1 | 5.3 | 28.9 | 30.4
Intercompany net revenues | 0.0 | 0.0 | 1.0 | 0.9
Racing Segment [Member] | Calder |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Racing | 0.7 | 0.6 | 2.0 | 2.0
Casino Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Casinos | 83.0 | 82.7 | 253.9 | 252.5
Property, Plant and Equipment, Additions |  |  | 9.7 | 15.4
Net revenue from external customers | 83.0 | 82.7 | 253.9 | 252.5
Total segment Adjusted EBITDA | 30.4 | 26.7 | 98.0 | 86.6
Casino Segment [Member] | Oxford Casino |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Casinos | 24.4 | 22.3 | 65.4 | 60.8
Casino Segment [Member] | Riverwalk Casino |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Casinos | 10.6 | 12.0 | 35.7 | 37.7
Casino Segment [Member] | Harlows Casino |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Casinos | 11.7 | 11.8 | 36.6 | 37.5
Casino Segment [Member] | Calder Casinos |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Casinos | 19.0 | 18.5 | 59.8 | 58.7
Casino Segment [Member] | Fair Grounds Slots |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Casinos | 8.5 | 8.8 | 27.9 | 29.9
Casino Segment [Member] | VSI |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Casinos | 8.6 | 9.0 | 27.9 | 27.6
Casino Segment [Member] | Saratoga Casino Holdings, LLC [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Casinos | 0.2 | 0.3 | 0.6 | 0.3
TwinSpires [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
TwinSpires | 54.7 | 50.4 | 172.3 | 156.5
Property, Plant and Equipment, Additions |  |  | 5.4 | 3.1
Net revenue from external customers | 55.1 | 50.7 | 173.3 | 157.3
Intercompany net revenues | 0.4 | 0.3 | 1.0 | 0.8
Total segment Adjusted EBITDA | 14.3 | 13.1 | 44.8 | 39.3
Big Fish Games [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Big Fish Games | 122.3 | 103.6 | 369.6 | 300.0
Property, Plant and Equipment, Additions |  |  | 3.6 | 3.0
Net revenue from external customers | 122.3 | 103.6 | 369.6 | 300.0
Total segment Adjusted EBITDA | 23.4 | 33.2 | 58.9 | 81.5
Other Investments Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Other Investments | 4.5 | 4.0 | 12.9 | 12.1
Property, Plant and Equipment, Additions |  |  | 0.8 | 0.4
Intercompany net revenues | 0.7 | 0.8 | 3.0 | 2.7
Total segment Adjusted EBITDA | 0.8 | 0.5 | 2.9 | 2.4
Corporate |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Corporate | 0.4 | 0.3 | 0.8 | 0.8
Property, Plant and Equipment, Additions |  |  | 1.2 | 0.6
Net revenue from external customers | 0.4 | 0.3 | 0.8 | 0.8
Total segment Adjusted EBITDA | (2.0) | (1.6) | (5.9) | (5.2)
Intersegment Eliminations [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Intercompany net revenues | (3.9) | (3.5) | (17.7) | (14.8)
Social casino | Big Fish Games [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Big Fish Games | 44.3 | 47.4 | 138.3 | 145.4
Casual and mid-core free-to-play | Big Fish Games [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Big Fish Games | 56.1 | 32.6 | 162.5 | 86.5
Premium | Big Fish Games [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Big Fish Games | 23.7 | 27.3 | 75.0 | 85.6
Fair value adjustments | Big Fish Games [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Big Fish Games | $ (1.8) | $ (3.7) | $ (6.2) | $ (17.5)

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