XML 44 R34.htm IDEA: XBRL DOCUMENT
v3.20.2

Description of Business (Details) ft² in Thousands |  |  |  |  |  |  | 1 Months Ended | 2 Months Ended | 3 Months Ended | 6 Months Ended | 14 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 25, 2020 racingDay | Oct. 09, 2019 USD ($) a | Mar. 08, 2019 USD ($) | Mar. 06, 2019 USD ($) | Mar. 05, 2019 USD ($) | Jan. 11, 2019 USD ($) | Jun. 28, 2020 racingDay | Mar. 31, 2020 racingDay | Sep. 26, 2020 racingDay | Dec. 31, 2021 USD ($) ft² game | Dec. 31, 2020 USD ($) ft² game | Jun. 30, 2020 USD ($) game | Jun. 30, 2019 USD ($) | Jun. 30, 2021 USD ($) | Mar. 16, 2020 USD ($)
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of reportable segments | game |  |  |  |  |  |  |  |  |  |  |  | 3 |  |  |
Proceeds from new credit facilities |  |  |  |  |  |  |  |  |  |  |  | $ 726,100,000 | $ 1,235,300,000 |  |
All Other | Turfway Park |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of spectator-free live racing days | racingDay | 9 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of spectator-free live racing days canceled | racingDay |  |  |  |  |  |  |  | 3 |  |  |  |  |  |  |
Churchill Downs Racetrack |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of spectator-free live racing days | racingDay |  |  |  |  |  |  | 27 |  |  |  |  |  |  |  |
Derby City Gaming |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patron capacity, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.50 |  |  |
Gaming capacity, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.66 |  |  |
Fair Grounds and VSI |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patron capacity, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.25 |  |  |
Gaming capacity, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.50 |  |  |
Video Services, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patron capacity, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.50 |  |  |
Gaming capacity, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.70 |  |  |
Harlow’s |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patron capacity, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.50 |  |  |
Maximum gaming capacity, slots, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.66 |  |  |
Maximum gaming capacity, table games, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.60 |  |  |
Ocean Downs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patron capacity, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.50 |  |  |
Maximum gaming capacity, table games, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.60 |  |  |
Maximum gaming capacity, video lottery terminals, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.70 |  |  |
Oxford |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum number of persons allowed on the gaming floor | game |  |  |  |  |  |  |  |  |  |  |  | 200 |  |  |
Presque Isle Downs & Casino |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patron capacity, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.50 |  |  |
Maximum gaming capacity, slots, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.60 |  |  |
Maximum gaming capacity, table games, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.60 |  |  |
Riverwalk |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patron capacity, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.50 |  |  |
Maximum gaming capacity, slots, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.66 |  |  |
Maximum gaming capacity, table games, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.60 |  |  |
Lady Luck Nemacolin |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patron capacity, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.50 |  |  |
Maximum gaming capacity, slots, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.50 |  |  |
Maximum gaming capacity, table games, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.60 |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from new credit facilities |  |  |  |  |  |  |  |  |  |  |  | $ 649,200,000 |  |  |
Revolving Credit Facility | Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 675,400,000
Proceeds from new credit facilities |  |  |  |  |  |  |  |  |  |  |  | $ 649,200,000 |  |  |
Forecast | All Other | Arlington International Racecourse |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of spectator-free live racing days | racingDay |  |  |  |  |  |  |  |  | 30 |  |  |  |  |  |
Presque Isle Downs & Casino And Lady Luck Casino |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to acquire business |  |  |  |  |  | $ 178,900,000 |  |  |  |  |  |  |  |  |
Presque Isle Downs & Casino |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Working capital and other purchase price adjustments |  |  |  |  |  | $ 1,600,000 |  |  |  |  |  |  |  |  |
Lady Luck Nemacolin |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to acquire business |  |  | $ 100,000 |  |  |  |  |  |  |  |  |  |  |  |
Turfway Park |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to acquire business |  | $ 36,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Working capital and other purchase price adjustments |  | 900,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Total consideration |  | $ 46,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Area of land | a |  | 197 |  |  |  |  |  |  |  |  |  |  |  |  |
Turfway Park | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total consideration |  |  |  |  |  |  |  |  |  | $ 200,000,000.0 |  |  |  |  |
Business combination, future investment in acquisition extension, square foot of gaming floor | ft² |  |  |  |  |  |  |  |  |  | 155 |  |  |  |  |
Turfway Park | Forecast | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of historical racing machines | game |  |  |  |  |  |  |  |  |  | 1,200 |  |  |  |  |
Turfway Park, Newport, Kentucky | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business combination, future investment in acquisition extension, square foot of gaming floor | ft² |  |  |  |  |  |  |  |  |  |  | 17 |  |  |  |
Number of historical racing machines | game |  |  |  |  |  |  |  |  |  |  | 500 |  |  |  |
Turfway Park, Newport, Kentucky | Forecast | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business combination, future investment in acquisition extension |  |  |  |  |  |  |  |  |  |  | $ 38,400,000 |  |  |  |
Midwest Gaming Holdings, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  | 61.30% | 42.00% |  |  |  |  |  |  | 61.30% |  |  |
Aggregated cash consideration paid at closing of the Sale Transaction |  |  |  |  | $ 406,600,000 |  |  |  |  |  |  |  |  |  |
Transaction costs |  |  |  |  | 3,500,000 |  |  |  |  |  |  |  |  |  |
Deferred tax liability |  |  |  |  | 103,200,000 |  |  |  |  |  |  |  |  |  |
Clairvest Group Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Transaction costs |  |  |  |  | 3,500,000 |  |  |  |  |  |  |  |  |  |
Rivers Casino Des Plaines |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patron capacity, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.50 |  |  |
Maximum gaming capacity, slots, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.66 |  |  |
Maximum gaming capacity, table games, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.60 |  |  |
Miami Valley Gaming LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patron capacity, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.50 |  |  |
Maximum gaming capacity, video lottery terminals, percentage |  |  |  |  |  |  |  |  |  |  |  | 0.50 |  |  |
Equity method investment, ownership percentage |  |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  |
Subsequent Event | Revolving Credit Facility | Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum liquidity financial covenant |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 150,000,000.0 |
Midwest Gaming Holdings, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from new credit facilities |  |  |  | $ 300,000,000.0 | $ 300,000,000.0 |  |  |  |  |  |  |  |  |  |
High Plaines | Midwest Gaming Holdings, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  | 36.00% |  |  |  |  |  |  |  |  |  |  |
Casino Investors | Midwest Gaming Holdings, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  | 2.70% |  |  |  |  |  |  |  |  |  |  |

X
- Definition Business Combination, Future Investment In Acquisition Extension + References No definition available. + Details
Name: | chdn_BusinessCombinationFutureInvestmentInAcquisitionExtension
Namespace Prefix: | chdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Business Combination, Future Investment In Acquisition Extension, Number Of Historical Racing Machines + References No definition available. + Details
Name: | chdn_BusinessCombinationFutureInvestmentInAcquisitionExtensionNumberOfHistoricalRacingMachines
Namespace Prefix: | chdn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Business Combination, Future Investment In Acquisition Extension, Square Foot Of Gaming Floor + References No definition available. + Details
Name: | chdn_BusinessCombinationFutureInvestmentInAcquisitionExtensionSquareFootOfGamingFloor
Namespace Prefix: | chdn_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Business Combination, Working Capital And Other Purchase Price Adjustments + References No definition available. + Details
Name: | chdn_BusinessCombinationWorkingCapitalAndOtherPurchasePriceAdjustments
Namespace Prefix: | chdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Debt Instrument, Financial Covenant, Minimum Liquidity To Be Maintained + References No definition available. + Details
Name: | chdn_DebtInstrumentFinancialCovenantMinimumLiquidityToBeMaintained
Namespace Prefix: | chdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Maximum Gaming Capacity, Percentage + References No definition available. + Details
Name: | chdn_MaximumGamingCapacityPercentage
Namespace Prefix: | chdn_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum Gaming Capacity, Slots, Percentage + References No definition available. + Details
Name: | chdn_MaximumGamingCapacitySlotsPercentage
Namespace Prefix: | chdn_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum Gaming Capacity, Table Games, Percentage + References No definition available. + Details
Name: | chdn_MaximumGamingCapacityTableGamesPercentage
Namespace Prefix: | chdn_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum Gaming Capacity, Video Lottery Terminals, Percentage + References No definition available. + Details
Name: | chdn_MaximumGamingCapacityVideoLotteryTerminalsPercentage
Namespace Prefix: | chdn_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum Number Of Persons Allowed On the Gaming Floor + References No definition available. + Details
Name: | chdn_MaximumNumberOfPersonsAllowedOnTheGamingFloor
Namespace Prefix: | chdn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum Patron Capacity, Percentage + References No definition available. + Details
Name: | chdn_MaximumPatronCapacityPercentage
Namespace Prefix: | chdn_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Spectator-Free Live Racing Days Canceled + References No definition available. + Details
Name: | chdn_NumberOfSpectatorFreeLiveRacingDaysCanceled
Namespace Prefix: | chdn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Spectator-Free Live Racing Days Held + References No definition available. + Details
Name: | chdn_NumberOfSpectatorFreeLiveRacingDaysHeld
Namespace Prefix: | chdn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Payments To Acquire Equity Method Investments, Transaction Costs + References No definition available. + Details
Name: | chdn_PaymentsToAcquireEquityMethodInvestmentsTransactionCosts
Namespace Prefix: | chdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Area of land held. + References No definition available. + Details
Name: | us-gaap_AreaOfLand
Namespace Prefix: | us-gaap_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=116821951&loc=d3e31931-109318 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
Name: | us-gaap_DeferredTaxLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireEquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_ProceedsFromLinesOfCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(1)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(13)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_ShortTermBorrowings
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_VariableInterestEntityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=us-gaap_AllOtherSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsegmentsAxis=chdn_TurfwayParkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | chdn_CasinoByLocationAxis=chdn_ChurchillDownsRacetrackMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | chdn_CasinoByLocationAxis=chdn_DerbyCityGamingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | chdn_CasinoByLocationAxis=chdn_FairGroundsSlotsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | chdn_CasinoByLocationAxis=chdn_VideoServicesLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | chdn_CasinoByLocationAxis=chdn_HarlowsCasinoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | chdn_CasinoByLocationAxis=chdn_OceanDownsLLCandRacingServicesLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | chdn_CasinoByLocationAxis=chdn_OxfordAcquisitionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | chdn_CasinoByLocationAxis=chdn_PresqueIsleDownsCasinoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | chdn_CasinoByLocationAxis=chdn_RiverwalkCasinoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | chdn_CasinoByLocationAxis=chdn_LadyLuckNemacolinMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsegmentsAxis=chdn_ArlingtonInternationalRacecourseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=chdn_PresqueIsleDownsCasinoAndLadyLuckCasinoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=chdn_PresqueIsleDownsCasinoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=chdn_LadyLuckNemacolinTransactionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=chdn_TurfwayParkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=chdn_TurfwayParkNewportKentuckyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=chdn_MidwestGamingHoldingsLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=chdn_ClairvestGroupInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=chdn_RiversCasinoDesPlainesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=chdn_MiamiValleyGamingLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=chdn_MidwestGamingHoldingsLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=chdn_HighPlainesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=chdn_CasinoInvestorsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |