Segment Information - Net Revenue From External Customers and Intercompany Revenue From Each Operating Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Net revenue	$ 2,734.3	$ 2,461.7	$ 1,809.8
External Customer
Segment Reporting Information [Line Items]
Net revenue	2,734.3	2,461.7	1,809.8
Operating Segments \| Live and Historical Racing
Segment Reporting Information [Line Items]
Net revenue	1,225.6	1,047.3	614.6
Operating Segments \| Wagering Services and Solutions
Segment Reporting Information [Line Items]
Net revenue	469.5	444.9	436.4
Operating Segments \| Gaming
Segment Reporting Information [Line Items]
Net revenue	1,039.1	968.6	755.9
Operating Segments \| External Customer
Segment Reporting Information [Line Items]
Net revenue	2,734.2	2,460.8	1,806.9
Operating Segments \| External Customer \| Live and Historical Racing
Segment Reporting Information [Line Items]
Net revenue	1,225.6	1,047.3	614.6
Operating Segments \| External Customer \| Wagering Services and Solutions
Segment Reporting Information [Line Items]
Net revenue	469.5	444.9	436.4
Operating Segments \| External Customer \| Gaming
Segment Reporting Information [Line Items]
Net revenue	1,039.1	968.6	755.9
All Other
Segment Reporting Information [Line Items]
Net revenue	0.1	0.9	2.9
All Other \| External Customer
Segment Reporting Information [Line Items]
Net revenue	$ 0.1	$ 0.9	$ 2.9

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details

Churchill Downs Inc 10-K