Condensed Consolidated Statements Of Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net revenue:
Net revenue	$ 306.3	$ 221.3	$ 1,049.1	$ 790.0
Operating expense:
Selling, general and administrative expense	34.4	21.9	89.4	63.4
Transaction expense, net	0.9	5.4	5.0	8.9
Total operating expense	278.5	200.8	836.9	613.2
Operating income	27.8	20.5	212.2	176.8
Other income (expense):
Interest expense, net	(18.9)	(9.9)	(52.0)	(29.2)
Equity in income of unconsolidated affiliates	14.1	9.1	27.7	24.4
Gain on Ocean Downs/Saratoga transaction	0.0	54.9	0.0	54.9
Miscellaneous, net	0.2	0.1	0.6	0.5
Total other income (expense)	(4.6)	54.2	(23.7)	50.6
Income from continuing operations before provision for income taxes	23.2	74.7	188.5	227.4
Income tax provision	(8.0)	(16.7)	(53.1)	(52.1)
Income from continuing operations, net of tax	15.2	58.0	135.4	175.3
(Loss) income from discontinued operations, net of tax	(0.4)	(1.7)	(1.9)	166.1
Net income	$ 14.8	$ 56.3	$ 133.5	$ 341.4
Net income (loss) per common share data - basic:
Continuing operations (in dollars per share)	$ 0.38	$ 1.43	$ 3.37	$ 4.22
Discontinued operations (in dollars per share)	(0.01)	(0.04)	(0.05)	4.00
Net income per common share data - basic (in dollars per share)	0.37	1.39	3.32	8.22
Net income (loss) per common share data - diluted:
Continuing operations (in dollars per share)	0.37	1.42	3.33	4.19
Discontinued operations (in dollars per share)	(0.01)	(0.04)	(0.05)	3.97
Net income per common share data - diluted (in dollars per share)	$ 0.36	$ 1.38	$ 3.28	$ 8.16
Weighted average shares outstanding:
Basic (in shares)	40.0	40.7	40.2	41.6
Diluted (in shares)	40.7	41.0	40.7	41.8
Other comprehensive income:
Foreign currency translation, net of tax	$ 0.0	$ 0.0	$ 0.0	$ 0.6
Change in pension benefits, net of tax	0.0	0.2	0.0	(0.2)
Other comprehensive income	0.0	0.2	0.0	0.4
Comprehensive income	14.8	56.5	133.5	341.8
Churchill Downs
Net revenue:
Net revenue	31.4	10.8	234.6	167.7
Operating expense:
Operating expense	30.8	19.5	127.8	87.4
Online Wagering
Net revenue:
Net revenue	70.2	71.8	228.9	228.7
Operating expense:
Operating expense	52.2	49.1	159.3	152.6
Gaming
Net revenue:
Net revenue	178.3	110.4	524.7	330.0
Operating expense:
Operating expense	137.3	81.2	395.5	238.9
All Other
Net revenue:
Net revenue	26.4	28.3	60.9	63.6
Operating expense:
Operating expense	$ 22.9	$ 23.7	$ 59.9	$ 62.0