Segment Information - Schedule of Net Revenue from External Customers (Details) - USD ($) $ in Millions | 3 Months Ended |
Mar. 31, 2020 | Mar. 31, 2019 |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | $ 252.9 | $ 265.4 |
Disclosure of complimentary revenue | 7.6 | 7.8 |
Churchill Downs | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 23.8 | 21.4 |
Online Wagering | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 67.7 | 63.4 |
Gaming | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 149.1 | 170.1 |
Operating Segments | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 252.9 | 265.4 |
Operating Segments | Churchill Downs | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 23.5 | 21 |
Operating Segments | Online Wagering | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 67.3 | 63.1 |
Operating Segments | Gaming | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 147.6 | 168.8 |
Segment Reconciling Items | All Other | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 14.5 | 12.5 |
External Customer | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 252.9 | 265.4 |
External Customer | Operating Segments | Churchill Downs | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 23.5 | 21 |
External Customer | Operating Segments | Online Wagering | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 67.3 | 63.1 |
External Customer | Operating Segments | Gaming | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 147.6 | 168.8 |
External Customer | Operating Segments | Total Segments | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 238.4 | 252.9 |
External Customer | Segment Reconciling Items | All Other | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 14.5 | 12.5 |
External Customer | Pari-mutuel, live and simulcast racing | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 84.7 | 81.6 |
External Customer | Pari-mutuel, live and simulcast racing | Operating Segments | Churchill Downs | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 1 | 1.4 |
External Customer | Pari-mutuel, live and simulcast racing | Operating Segments | Online Wagering | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 63.9 | 60.5 |
External Customer | Pari-mutuel, live and simulcast racing | Operating Segments | Gaming | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 9.9 | 12.2 |
External Customer | Pari-mutuel, live and simulcast racing | Operating Segments | Total Segments | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 74.8 | 74.1 |
External Customer | Pari-mutuel, live and simulcast racing | Segment Reconciling Items | All Other | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 9.9 | 7.5 |
External Customer | Pari-mutuel, historical racing | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 20.4 | 17.7 |
External Customer | Pari-mutuel, historical racing | Operating Segments | Churchill Downs | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 20.4 | 17.7 |
External Customer | Pari-mutuel, historical racing | Operating Segments | Online Wagering | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 0 | 0 |
External Customer | Pari-mutuel, historical racing | Operating Segments | Gaming | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 0 | 0 |
External Customer | Pari-mutuel, historical racing | Operating Segments | Total Segments | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 20.4 | 17.7 |
External Customer | Pari-mutuel, historical racing | Segment Reconciling Items | All Other | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 0 | 0 |
External Customer | Racing event-related services | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 1.4 | 1.5 |
External Customer | Racing event-related services | Operating Segments | Churchill Downs | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 0 | 0 |
External Customer | Racing event-related services | Operating Segments | Online Wagering | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 0 | 0 |
External Customer | Racing event-related services | Operating Segments | Gaming | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 1.3 | 1.5 |
External Customer | Racing event-related services | Operating Segments | Total Segments | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 1.3 | 1.5 |
External Customer | Racing event-related services | Segment Reconciling Items | All Other | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 0.1 | 0 |
External Customer | Gaming | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 122.3 | 146.7 |
External Customer | Gaming | Operating Segments | Churchill Downs | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 0 | 0 |
External Customer | Gaming | Operating Segments | Online Wagering | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 0.7 | 0.1 |
External Customer | Gaming | Operating Segments | Gaming | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 121.6 | 146.6 |
External Customer | Gaming | Operating Segments | Total Segments | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 122.3 | 146.7 |
External Customer | Gaming | Segment Reconciling Items | All Other | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 0 | 0 |
External Customer | Other | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 24.1 | 17.9 |
External Customer | Other | Operating Segments | Churchill Downs | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 2.1 | 1.9 |
External Customer | Other | Operating Segments | Online Wagering | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 2.7 | 2.5 |
External Customer | Other | Operating Segments | Gaming | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 14.8 | 8.5 |
External Customer | Other | Operating Segments | Total Segments | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | 19.6 | 12.9 |
External Customer | Other | Segment Reconciling Items | All Other | | |
Segment Reporting Information [Line Items] | | |
Net revenue from external customers | $ 4.5 | $ 5 |