Debt Instrument, Unamortized Premium, Percentage

No definition available.

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- Definition

Debt Issuance Costs, Amortization Period

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
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- Definition

Line Of Credit Facility, Increase To Maximum Borrowing Capacity

+ References

No definition available.

+ Details

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Namespace Prefix:	chdn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- 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

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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Debt - Additional Information (Details) - USD ($) $ in Millions			3 Months Ended	12 Months Ended
	Feb. 24, 2023	Apr. 13, 2022	Mar. 31, 2023	Mar. 31, 2023	Mar. 17, 2021	Dec. 27, 2017
Debt Instrument [Line Items]
Amortization period of debt issuance costs (in years)	5 years	5 years
London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread			2.00%
Term Loan B due 2024
Debt Instrument [Line Items]
Face amount of debt issuance					$ 300.0
Senior Notes \| 2027 Senior Notes
Debt Instrument [Line Items]
Face amount of debt issuance			$ 600.0	$ 600.0
Stated interest rate			5.50%	5.50%
Senior Notes \| 2028 Senior Notes
Debt Instrument [Line Items]
Face amount of debt issuance			$ 700.0	$ 700.0
Senior Notes \| Senior Notes Due 2028, Existing
Debt Instrument [Line Items]
Face amount of debt issuance			$ 500.0	$ 500.0
Stated interest rate			4.75%	4.75%
Senior Notes \| Senior Notes Due 2028, Additional
Debt Instrument [Line Items]
Face amount of debt issuance			$ 200.0	$ 200.0
Redemption price, percentage of face amount			103.25%
Premium (percent)			0.0325	0.0325
Senior Notes \| 2030 Senior Notes
Debt Instrument [Line Items]
Face amount of debt issuance			$ 1,200.0	$ 1,200.0
Debt issuance costs			$ 18.3	$ 18.3
Stated interest rate			5.75%	5.75%
Revolving Credit Facility \| Incremental Joinder Agreement No. 2
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 1,300.0					$ 800.0
Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Face amount of debt issuance			$ 1,200.0	$ 1,200.0
Maximum borrowing capacity						700.0
Increase to maximum borrowing capacity				$ 1,200.0
Commitment fee percentage			0.25%
Revolving Credit Facility \| Line of Credit \| Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Basis spread			0.10%
Revolving Credit Facility \| Line of Credit \| Credit Agreement Amendment \| Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Basis spread			1.50%
Term Loan B \| Term Loan B due 2024
Debt Instrument [Line Items]
Face amount of debt issuance						$ 400.0
Term Loan B \| Term Loan A
Debt Instrument [Line Items]
Face amount of debt issuance		$ 800.0
Term Loan B \| Revolver
Debt Instrument [Line Items]
Debt issuance costs		3.2
Term Loan B \| Delayed Draw Term Loan A
Debt Instrument [Line Items]
Debt issuance costs	$ 2.5	6.4
Swing Line Commitment \| Line of Credit
Debt Instrument [Line Items]
Face amount of debt issuance		100.0
Maximum borrowing capacity		$ 50.0