v3.26.1
Stock-based Compensation Plans - Additional Information (Details)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
performance_condition
performance_criteria
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation     $ 13 $ 11  
Number of performance criteria | performance_criteria     2    
PSUs          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Liability classified awards $ 14   $ 14   $ 21
PSUs | Churchill Downs Incorporated 2016 Omnibus Stock Incentive Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period (in years)     3 years    
Number of performance conditions | performance_condition     2    
Continuing Operations          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation $ 8 $ 7 $ 13 $ 11