v3.26.1
Revenue from Contracts with Customers - Net Revenue From External Customers and Intercompany Revenue From Each Operating Segment (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Disaggregation of Revenue [Line Items]        
Net revenue $ 980 $ 934 $ 1,643 $ 1,577
Disclosure of complimentary revenue 16 16 32 30
Related Party        
Disaggregation of Revenue [Line Items]        
Net revenue 0 0 0 0
Gaming        
Disaggregation of Revenue [Line Items]        
Net revenue 270 266 527 529
Other        
Disaggregation of Revenue [Line Items]        
Net revenue 0 0 0 0
External Customer        
Disaggregation of Revenue [Line Items]        
Net revenue 980 934 1,643 1,577
External Customer | Pari-mutuel, live and simulcast racing        
Disaggregation of Revenue [Line Items]        
Net revenue 190 183 292 285
External Customer | Pari-mutuel, historical racing        
Disaggregation of Revenue [Line Items]        
Net revenue 265 257 522 503
External Customer | Racing event-related services        
Disaggregation of Revenue [Line Items]        
Net revenue 192 173 194 175
External Customer | Gaming        
Disaggregation of Revenue [Line Items]        
Net revenue 239 232 467 453
External Customer | Other        
Disaggregation of Revenue [Line Items]        
Net revenue 94 89 168 161
Operating Segments | External Customer        
Disaggregation of Revenue [Line Items]        
Net revenue 980 934 1,643 1,577
Operating Segments | External Customer | Pari-mutuel, live and simulcast racing        
Disaggregation of Revenue [Line Items]        
Net revenue 190 183 292 285
Operating Segments | External Customer | Pari-mutuel, historical racing        
Disaggregation of Revenue [Line Items]        
Net revenue 265 257 522 503
Operating Segments | External Customer | Racing event-related services        
Disaggregation of Revenue [Line Items]        
Net revenue 192 173 194 175
Operating Segments | External Customer | Gaming        
Disaggregation of Revenue [Line Items]        
Net revenue 239 232 467 453
Operating Segments | External Customer | Other        
Disaggregation of Revenue [Line Items]        
Net revenue 94 89 168 161
Operating Segments | Live and Historical        
Disaggregation of Revenue [Line Items]        
Net revenue 543 510 840 783
Operating Segments | Live and Historical | Related Party        
Disaggregation of Revenue [Line Items]        
Net revenue 32 31 36 35
Operating Segments | Live and Historical | External Customer        
Disaggregation of Revenue [Line Items]        
Net revenue 543 510 840 783
Operating Segments | Live and Historical | External Customer | Pari-mutuel, live and simulcast racing        
Disaggregation of Revenue [Line Items]        
Net revenue 53 54 64 65
Operating Segments | Live and Historical | External Customer | Pari-mutuel, historical racing        
Disaggregation of Revenue [Line Items]        
Net revenue 265 252 522 489
Operating Segments | Live and Historical | External Customer | Racing event-related services        
Disaggregation of Revenue [Line Items]        
Net revenue 192 173 193 174
Operating Segments | Live and Historical | External Customer | Gaming        
Disaggregation of Revenue [Line Items]        
Net revenue 3 3 7 6
Operating Segments | Live and Historical | External Customer | Other        
Disaggregation of Revenue [Line Items]        
Net revenue 30 28 54 49
Operating Segments | Wagering Services and Solutions        
Disaggregation of Revenue [Line Items]        
Net revenue 167 158 276 265
Operating Segments | Wagering Services and Solutions | Related Party        
Disaggregation of Revenue [Line Items]        
Net revenue 11 10 20 19
Operating Segments | Wagering Services and Solutions | External Customer        
Disaggregation of Revenue [Line Items]        
Net revenue 167 158 276 265
Operating Segments | Wagering Services and Solutions | External Customer | Pari-mutuel, live and simulcast racing        
Disaggregation of Revenue [Line Items]        
Net revenue 133 125 214 205
Operating Segments | Wagering Services and Solutions | External Customer | Pari-mutuel, historical racing        
Disaggregation of Revenue [Line Items]        
Net revenue 0 0 0 0
Operating Segments | Wagering Services and Solutions | External Customer | Racing event-related services        
Disaggregation of Revenue [Line Items]        
Net revenue 0 0 0 0
Operating Segments | Wagering Services and Solutions | External Customer | Gaming        
Disaggregation of Revenue [Line Items]        
Net revenue 4 4 10 8
Operating Segments | Wagering Services and Solutions | External Customer | Other        
Disaggregation of Revenue [Line Items]        
Net revenue 30 29 52 52
Operating Segments | Gaming        
Disaggregation of Revenue [Line Items]        
Net revenue 270 266 527 529
Operating Segments | Gaming | Related Party        
Disaggregation of Revenue [Line Items]        
Net revenue 0 0 5 4
Operating Segments | Gaming | External Customer        
Disaggregation of Revenue [Line Items]        
Net revenue 270 266 527 529
Operating Segments | Gaming | External Customer | Pari-mutuel, live and simulcast racing        
Disaggregation of Revenue [Line Items]        
Net revenue 4 4 14 15
Operating Segments | Gaming | External Customer | Pari-mutuel, historical racing        
Disaggregation of Revenue [Line Items]        
Net revenue 0 5 0 14
Operating Segments | Gaming | External Customer | Racing event-related services        
Disaggregation of Revenue [Line Items]        
Net revenue 0 0 1 1
Operating Segments | Gaming | External Customer | Gaming        
Disaggregation of Revenue [Line Items]        
Net revenue 232 225 450 439
Operating Segments | Gaming | External Customer | Other        
Disaggregation of Revenue [Line Items]        
Net revenue 34 32 62 60
All Other        
Disaggregation of Revenue [Line Items]        
Net revenue 0 0 0 0
All Other | Related Party        
Disaggregation of Revenue [Line Items]        
Net revenue 2 2 4 4
All Other | External Customer        
Disaggregation of Revenue [Line Items]        
Net revenue 0 0 0 0
All Other | External Customer | Pari-mutuel, live and simulcast racing        
Disaggregation of Revenue [Line Items]        
Net revenue 0 0 0 0
All Other | External Customer | Pari-mutuel, historical racing        
Disaggregation of Revenue [Line Items]        
Net revenue 0 0 0 0
All Other | External Customer | Racing event-related services        
Disaggregation of Revenue [Line Items]        
Net revenue 0 0 0 0
All Other | External Customer | Gaming        
Disaggregation of Revenue [Line Items]        
Net revenue 0 0 0 0
All Other | External Customer | Other        
Disaggregation of Revenue [Line Items]        
Net revenue 0 0 0 0
Eliminations | Related Party        
Disaggregation of Revenue [Line Items]        
Net revenue (45) (43) (65) (62)
Churchill Downs Racetrack | Operating Segments | Live and Historical        
Disaggregation of Revenue [Line Items]        
Net revenue 247 228 250 232
Louisville | Operating Segments | Live and Historical        
Disaggregation of Revenue [Line Items]        
Net revenue 59 57 114 109
Northern Kentucky | Operating Segments | Live and Historical        
Disaggregation of Revenue [Line Items]        
Net revenue 29 27 65 58
Southwestern Kentucky | Operating Segments | Live and Historical        
Disaggregation of Revenue [Line Items]        
Net revenue 49 43 93 84
Western Kentucky | Operating Segments | Live and Historical        
Disaggregation of Revenue [Line Items]        
Net revenue 18 16 37 28
Virginia | Operating Segments | Live and Historical        
Disaggregation of Revenue [Line Items]        
Net revenue 138 136 271 266
New Hampshire | Operating Segments | Live and Historical        
Disaggregation of Revenue [Line Items]        
Net revenue 3 3 10 6
Florida | Operating Segments | Gaming        
Disaggregation of Revenue [Line Items]        
Net revenue 24 26 48 51
Iowa | Operating Segments | Gaming        
Disaggregation of Revenue [Line Items]        
Net revenue 24 23 48 47
Indiana | Operating Segments | Gaming        
Disaggregation of Revenue [Line Items]        
Net revenue 35 32 68 64
Louisiana | Operating Segments | Gaming        
Disaggregation of Revenue [Line Items]        
Net revenue 29 32 65 77
Maine | Operating Segments | Gaming        
Disaggregation of Revenue [Line Items]        
Net revenue 26 28 51 52
Maryland | Operating Segments | Gaming        
Disaggregation of Revenue [Line Items]        
Net revenue 28 25 49 46
Mississippi | Operating Segments | Gaming        
Disaggregation of Revenue [Line Items]        
Net revenue 24 24 48 49
New York | Operating Segments | Gaming        
Disaggregation of Revenue [Line Items]        
Net revenue 51 48 97 91
Pennsylvania | Operating Segments | Gaming        
Disaggregation of Revenue [Line Items]        
Net revenue $ 29 $ 28 $ 53 $ 52