Gaming Gaming [Member] Gaming [Member] Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Recent Accounting Pronouncements Significant Accounting Policies [Text Block] Denominator for net income per common share: Earnings Per Share, Diluted, Other Disclosure [Abstract] Number of performance criteria Number Of Performance Criteria Number Of Performance Criteria Casino Resorts NH Holdings, LLC Casino Resorts NH Holdings, LLC [Member] Casino Resorts NH Holdings, LLC Award Timing Predetermined Award Timing Predetermined [Flag] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Indefinite-Lived Intangible Assets [Axis] Indefinite-Lived Intangible Assets [Axis] Entity File Number Entity File Number Equity in income of unconsolidated affiliates Equity in income of unconsolidated affiliates Income (Loss) from Equity Method Investments Tabular List, Table Tabular List [Table Text Block] Net income attributable to Churchill Downs Incorporated per common share data: Basic Earnings Per Share, Basic [Abstract] Adjusted EBITDA Adjusted EBITDA Adjusted Earnings Before Interest, Tax, Depreciation, and Amortization Adjusted Earnings Before Interest, Tax, Depreciation, and Amortization Recent Accounting Pronouncements - Effective in 2026 or thereafter New Accounting Pronouncements, Policy [Policy Text Block] Operating Activities [Axis] Operating Activities [Axis] Non-current deferred revenue Deferred Revenue, Noncurrent Miami Valley Gaming LLC Miami Valley Gaming LLC [Member] Miami Valley Gaming LLC [Member] Taxes paid related to net share settlement of stock awards Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Long-term debt, net of current maturities and loan origination fees Secured Long-Term Debt, Noncurrent Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Measurement Basis [Axis] Measurement Basis [Axis] Adjustment to Compensation: Adjustment to Compensation [Axis] Western Kentucky Western Kentucky [Member] Western Kentucky Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Term Loan A due 2029 Term Loan A Due 2029 [Member] Term Loan A Due 2029 Revenue from Contracts with Customers Revenue from Contract with Customer [Text Block] Southwestern Kentucky Southwestern Kentucky [Member] Southwestern Kentucky Pari-mutuel, historical racing Pari-Mutuel, Historical Racing [Member] Pari-Mutuel, Historical Racing [Member] Schedule of Segment Reporting Information Schedule of Segment Reporting Information, by Segment [Table Text Block] Senior Notes Due 2028, Additional Senior Notes Due 2028, Additional [Member] Senior Notes Due 2028, Additional Continuing Operations Continuing Operations [Member] Remaining performance obligation, amount Revenue, Remaining Performance Obligation, Amount Adjustment to Compensation, Amount Adjustment to Compensation Amount Unamortized premium and deferred finance charges Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Stock-based compensation Share-Based Payment Arrangement, Noncash Expense Employee Stock Option Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Redeemable Noncontrolling Interest [Table] Redeemable Noncontrolling Interest [Table] Property By Location [Axis] Property By Location [Axis] Casino By Location [Axis] Cash paid for income taxes Income Taxes Paid Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts and Financing Receivables [Table] 2028 Senior Notes Senior Notes Due 2028 [Member] Senior Notes Due 2028 [Member] Total Churchill Downs Incorporated shareholders' equity Shareholders' equity, beginning Shareholders' equity, ending Equity, Attributable to Parent Insider Trading Policies and Procedures [Line Items] Stock-based compensation expense Share-Based Payment Arrangement, Expense New York NEW YORK Segment Reporting, Asset Reconciling Item [Line Items] Segment Reporting, Asset Reconciling Item [Line Items] Accrued fixed assets Accrued Fixed Assets, Current Accrued Fixed Assets, Current Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Current assets: Assets, Current [Abstract] Total liabilities and shareholders' equity Liabilities and Equity LIABILITIES AND SHAREHOLDERS' EQUITY Liabilities and Members' Deficit Liabilities and Equity [Abstract] Cover page. 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Period Focus Document Fiscal Period Focus Award Timing Method Award Timing Method [Text Block] Basic net income (in dollars per share) Income (Loss) from Continuing Operations, Per Basic Share Award Type [Axis] Award Type [Axis] Long-term debt Long-Term Debt Legal Entity [Axis] Legal Entity [Axis] Total assets Assets Investment, Name [Domain] Investment, Name [Domain] Trading Symbol Trading Symbol Virginia VIRGINIA High Plaines High Plaines [Member] High Plaines [Member] Insurance deposits and other Deposits Assets, Current Transaction expense, net Transaction expense, net Transaction expense, net includes acquisition and disposition related charges and Other transaction expenses, including legal, accounting and other misc related expenses Entity Address, City or Town Entity Address, City or Town Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Northern Kentucky Northern Kentucky [Member] Northern Kentucky 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Statement [Table] Statement [Table] Revolver Revolver [Member] Revolver Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Redeemable Noncontrolling Interest Noncontrolling Interest Disclosure [Text Block] Contract with customer, liability Contract with Customer, Liability Distributions from unconsolidated affiliates Proceeds from Equity Method Investment, Distribution Fair Value Measurements, Recurring and Nonrecurring Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Maine MAINE Maryland MARYLAND Redemption value adjustment Adjustments related to redeemable noncontrolling interest Temporary Equity, Accretion to Redemption Value, Adjustment Other income Other income (expense)-Adjusted EBITDA Other income (expense) that is excluding of Adjusted EBITDA items Weighted average shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] All Adjustments to Compensation All Adjustments to Compensation [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Amendment Flag Amendment Flag Louisville Louisville Property [Member] Louisville Property Termination Date Trading Arrangement Termination Date Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] Debt instrument, variable interest rate, type [extensible enumeration] Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] Simulcast and online wagering receivables Simulcast and ADW Receivables [Member] Simulcast and ADW Receivables [Member] Description of Business Basis of Presentation and Significant Accounting Policies [Text Block] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Remaining unused authorization for stock repurchase program Share Repurchase Program, Remaining Authorized, Amount Indefinite-lived intangible assets Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract] Operating expense Cost of Product and Service Sold New Hampshire NEW HAMPSHIRE Property By Location [Domain] Casino By Location [Domain] Casino By Location [Domain] Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Share Repurchase Program [Table] Share Repurchase Program [Table] Subsequent Events [Abstract] Subsequent Events [Abstract] Segment Reporting [Abstract] Segment Reporting [Abstract] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Common Stock Common Stock Including Additional Paid in Capital [Member] Other (expense) income: Nonoperating Income (Expense) [Abstract] Entity Tax Identification Number Entity Tax Identification Number Asset Acquisition [Axis] Asset Acquisition [Axis] Mississippi MISSISSIPPI Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Income taxes receivable Income Taxes Receivable, Current Schedule of Redeemable Noncontrolling Interest Redeemable Noncontrolling Interest [Table Text Block] Goodwill and Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Term Loan B-1 due 2028 Term Loan B-1 Term Loan B-1 Due 2028 [Member] Term Loan B-1 Due 2028 Payment of dividends Payments of Dividends Dividends payable Dividends Payable, Current Interest expense, net Interest Expense, Nonoperating Trading Arrangement: Trading Arrangement [Axis] Income taxes Increase (Decrease) in Income Taxes Payable Total Shareholder Return Amount Total Shareholder Return Amount March 2025 Stock Repurchase Program March 2025 Stock Repurchase Program [Member] March 2025 Stock Repurchase Program Notes payable, net of debt issuance costs Unsecured Long-Term Debt, Noncurrent Subsequent Events Subsequent Events [Text Block] Insider Trading Arrangements [Line Items] All Other Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Security Exchange Name Security Exchange Name Preakness IP Rights Preakness IP Rights [Member] Preakness IP Rights All Other Other Product and Service, Other [Member] Property and equipment additions included in accounts payable and accrued expenses Property And Equipment Additions Included In Accounts Payable And Accrued Expenses Property and equipment additions included in accounts payable and accrued expenses Total liabilities Liabilities Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Repurchase of common stock (in shares) Stock Repurchased During Period, Shares Indefinite-Lived Intangible Assets, Major Class Name [Domain] Indefinite-Lived Intangible Assets, Major Class Name [Domain] Operating expense: Operating Expenses [Abstract] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Senior Notes Due 2028, Existing Senior Notes Due 2028, Existing [Member] Senior Notes Due 2028, Existing Louisiana LOUISIANA Maintenance, insurance and utilities Utilities Operating Expense, Maintenance and Operations Statement [Line Items] Statement [Line Items] Consolidation Items [Axis] Consolidation Items [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and Cash Equivalent Subsequent Event [Line Items] Subsequent Event [Line Items] Deferred income taxes Increase (Decrease) in Deferred Income Taxes Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Net increase in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Secured Overnight Financing Rate (SOFR) [Member]