Description of Business	12 Months Ended
Description of Business	Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Churchill Downs Incorporated ("CDI" or the "Company") has been creating extraordinary entertainment experiences for nearly 150 years, beginning with the Company’s most iconic and enduring asset, the Kentucky Derby. Headquartered in Louisville, Kentucky, CDI has expanded through the development of live and historical racing entertainment venues, the growth of the TwinSpires horse racing online wagering business, expanded pari-mutuel content and technology services to B2C platforms, and the operation and development of regional casino gaming properties. We own and operate 14 live and historical racing entertainment venues in three states, one of the largest online horse racing wagering platforms in the U.S., nine wholly owned casino gaming properties in eight states and 13 retail sports books. We were organized as a Kentucky corporation in 1928, and our principal executive offices are located in Louisville, Kentucky. In the first quarter of 2022, we updated our operating segments to reflect the internal management reporting used by our chief operating decision maker to evaluate results of operations and to assess performance and allocate resources. During the first quarter of 2022, our chief operating decision maker decided to include the results of our United Tote business in the TwinSpires segment as we integrate the United Tote offering with TwinSpires Horse Racing. For additional information, refer to Note 21, Segment Information. Acquisition of Exacta Systems On August 22, 2023, the Company completed its previously announced acquisition of Exacta Systems, LLC ("Exacta"). Refer to Note 3, Acquisitions for further information on the transaction. Stock Split Effective May 22, 2023, the Company's common stock was split two-for-one (the "Stock Split") with a proportionate increase in the number of its authorized shares of common stock. All share and per-share amounts have been retroactively adjusted to reflect the effects of the Stock Split. Refer to Note 10, Shareholders' Equity for further information on the Stock Split. Presque Isle Impairment During the second quarter of 2023, we evaluated economic conditions subsequent to the date of our annual impairment assessment on April 1, 2023, including competition in the market and inflationary pressures, which increased during the second quarter of 2023, and impacted the performance and outlook of Presque Isle Downs and Casino ("Presque Isle"). As a result, the Company concluded that a trigger event for impairment testing occurred related to the Presque Isle gaming rights, trademark, and the reporting unit's goodwill at the end of the second quarter. Based on the 2023 trigger event, the Company evaluated and subsequently updated the projected cash flows and discount rate to reflect the economic environment at that time. As a result, the Company recognized a non-cash impairment charge of $24.5 million in the second quarter of 2023 for the Presque Isle gaming rights and trademark. Refer to Note 8, Asset Impairments for further information on the impairment. Arlington Sale On February 15, 2023, we closed on the sale of the Arlington International Racecourse property ("Arlington") located in Arlington Heights, Illinois. We sold 326-acres to the Chicago Bears for $197.2 million. Refer to Note 4, Dispositions for further information on the transaction. Acquisition of Peninsula Pacific Entertainment On November 1, 2022, the Company completed the acquisition of substantially all of the assets of Peninsula Pacific Entertainment LLC ("P2E") with a base purchase price of $2.75 billion ("P2E Transaction") subject to working capital and other purchase price adjustments. The P2E assets acquired included Colonial Downs Racetrack ("Colonial Downs") and six Historical Racing Machine ("HRM") entertainment venues in Virginia, del Lago Resort & Casino in New York ("del Lago"), and Hard Rock Hotel & Casino in Iowa ("Hard Rock Sioux City"), as well as the HRM development rights for Emporia, Virginia, and Dumfries, Virginia, and up to five additional HRM entertainment venues in Virginia. Refer to Note 3, Acquisitions, for further information on the transaction. Acquisition of Ellis Park and Chasers Poker Room Ellis Park Acquisition On September 26, 2022, the Company completed the acquisition of Ellis Park Racing & Gaming ("Ellis Park") in Henderson, Kentucky, from Enchantment Holdings, LLC, an affiliate of Laguna Development Corporation, for total consideration of $79.0 million in cash, subject to certain working capital and other purchase price adjustments (the "Ellis Park Transaction"). Chasers Poker Room Acquisition On September 2, 2022, the Company completed the acquisition of Chasers Poker Room ("Chasers") in Salem, New Hampshire (the "Chasers Transaction"). As part of the transaction, we made an initial payment to the sellers for rights to operate the poker room and to build an HRM venue. Additional payments will be made once all necessary permits are obtained, and the planned historical racing entertainment venue is opened. The Company plans to develop an expanded charitable gaming facility in Salem to accommodate HRMs and table games. Refer to Note 3, Acquisitions, for further information on the transactions.