Share-based Compensation Arrangement by Share-based Payment Award, Number of Requisite Service Periods

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant, Percentage of Original Award

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No definition available.

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- Definition

Share-based COmpensation Arrangement by Share-based Payment Award, Number of Vesting Service Periods

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Payout Curve, Maximum Percentage of Original Award

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Percentage Decrease If In Bottom Quartile

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Percentage Increase in Awards If In Top Quartile

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No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- 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

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- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.D.2)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

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Stock-Based Compensation Plans - Additional Information - Restricted Shares and Restricted Stock Units (Details) $ in Millions			12 Months Ended
	Feb. 23, 2016 service_period shares	Sep. 22, 2015 service_period shares	Dec. 31, 2016 USD ($) shares	Dec. 31, 2015 USD ($) shares	Dec. 31, 2014 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense			$ 18.9	$ 13.8	$ 11.9
Unrecognized compensation expense			$ 15.6
Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plan			15 months
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense				$ 1.3
Other awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of units received by NEOs and Grantees under adopted ELTI Plan (in shares) \| shares			72,529
Performance and service period under adopted ELTI Plan			3 years
Stock-based compensation expense			$ 4.4
Unrecognized compensation expense			$ 7.7
Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plan			15 months
Churchill Downs Incorporated 2007 Omnibus Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)			3 years
Churchill Downs Incorporated 2007 Omnibus Stock Incentive Plan \| Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)			3 years
NEOs, Grantees and certain other employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of units received by NEOs and Grantees under adopted ELTI Plan (in shares) \| shares				167,800
Unrecognized compensation expense			$ 3.0
Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plan			13 months
Stock-based compensation expense			$ 4.7	$ 6.2
Performance-Based Awards \| NEOs, Grantees and certain other employees \| Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares awarded \| shares			56,915
Minimum \| NEOs, Grantees and certain other employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting service period				7 months
Maximum \| NEOs, Grantees and certain other employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting service period				3 years
February 23, 2016 \| Executive Long-Term Incentive Compensation Plan (the “ELTI Plan”) \| Restricted Stock Units (RSU)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of units received by NEOs and Grantees under adopted ELTI Plan (in shares) \| shares	24,677
Number of vesting service periods \| service_period	3
February 23, 2016 \| Executive Long-Term Incentive Compensation Plan (the “ELTI Plan”) \| Performance Share Units (PSU)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of units received by NEOs and Grantees under adopted ELTI Plan (in shares) \| shares	29,633
Performance and service period under adopted ELTI Plan	34 months
Maximum award payout curve percentage of original performance share units awarded (as a percent)	200.00%
Percentage increase in awards if in top quartile	25.00%
Percentage decrease if in bottom quartile	25.00%
Maximum number of performance share units as percentage of original award (as a percent)		250.00%
February 23, 2016 \| Executive Long-Term Incentive Compensation Plan (the “ELTI Plan”) \| RSUs, PSUs, and Other Employee Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense			$ 7.7
February 23, 2016 \| Executive Long-Term Incentive Compensation Plan (the “ELTI Plan”) \| RSU and PSU awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense			4.3
February 23, 2016 \| Executive Long-Term Incentive Compensation Plan (the “ELTI Plan”) \| Other awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense			4.9
February 23, 2016 \| Performance-Based Awards \| Executive Long-Term Incentive Compensation Plan (the “ELTI Plan”) \| Performance Share Units (PSU)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance and service period under adopted ELTI Plan	3 years
Requisite service periods \| service_period	3
September 22, 2015 \| Executive Long-Term Incentive Compensation Plan (the “ELTI Plan”) \| Restricted Stock Units (RSU)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of units received by NEOs and Grantees under adopted ELTI Plan (in shares) \| shares		22,142
Requisite service periods \| service_period		2
September 22, 2015 \| Executive Long-Term Incentive Compensation Plan (the “ELTI Plan”) \| Performance Share Units (PSU)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of units received by NEOs and Grantees under adopted ELTI Plan (in shares) \| shares		27,282
Performance and service period under adopted ELTI Plan		30 months
September 22, 2015 \| Executive Long-Term Incentive Compensation Plan (the “ELTI Plan”) \| RSU and PSU awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense			3.8	$ 0.9
Unrecognized compensation expense			$ 2.6