Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net revenue:
Net revenue	$ 337.8	$ 306.3	$ 775.8	$ 1,049.1
Operating expense:
Selling, general and administrative expense	38.8	34.4	85.3	89.4
Impairment of intangible assets	0.0	0.0	17.5	0.0
Transaction expense, net	0.5	0.9	1.0	5.0
Total operating expense	288.3	278.5	738.3	836.9
Operating income	49.5	27.8	37.5	212.2
Other income (expense):
Interest expense, net	(19.7)	(18.9)	(59.3)	(52.0)
Equity in income of unconsolidated affiliates	27.6	14.1	13.2	27.7
Miscellaneous, net	(0.4)		(0.1)
Miscellaneous, net		0.2		0.6
Total other income (expense)	7.5	(4.6)	(46.2)	(23.7)
Income (loss) from continuing operations before provision for income taxes	57.0	23.2	(8.7)	188.5
Income tax (provision) benefit	(13.9)	(8.0)	5.6	(53.1)
Income (loss) from continuing operations, net of tax	43.1	15.2	(3.1)	135.4
Loss from discontinued operations, net of tax	0.0	(0.4)	(96.1)	(1.9)
Net income (loss)	43.1	14.8	(99.2)	133.5
Net loss attributable to noncontrolling interest	(0.1)	0.0	(0.2)	0.0
Net income (loss) and comprehensive income (loss) attributable to CDI	$ 43.2	$ 14.8	$ (99.0)	$ 133.5
Net (loss) income per common share data, basic:
Continuing operations (in dollars per share)	$ 1.09	$ 0.38	$ (0.07)	$ 3.37
Discontinued operations (in dollars per share)	0	(0.01)	(2.43)	(0.05)
Net (loss) income per common share data - basic (in dollars per share)	1.09	0.37	(2.50)	3.32
Net (loss) income per common share data, diluted:
Continuing operations (in dollars per share)	1.08	0.37	(0.07)	3.33
Discontinued operations (in dollars per share)	0	(0.01)	(2.43)	(0.05)
Net (loss) income per common share data - diluted (in dollars per share)	$ 1.08	$ 0.36	$ (2.50)	$ 3.28
Weighted average shares outstanding:
Basic (in shares)	39.5	40.0	39.6	40.2
Diluted (in shares)	40.1	40.7	39.6	40.7
Churchill Downs
Net revenue:
Net revenue	$ 60.8	$ 31.4	$ 107.6	$ 234.6
Operating expense:
Operating expense	48.3	30.8	106.0	127.8
Online Wagering
Net revenue:
Net revenue	125.9	70.2	314.4	228.9
Operating expense:
Operating expense	83.5	52.2	208.2	159.3
Gaming
Net revenue:
Net revenue	134.8	178.3	319.7	524.7
Operating expense:
Operating expense	96.7	137.3	267.1	395.5
All Other
Net revenue:
Net revenue	16.3	26.4	34.1	60.9
Operating expense:
Operating expense	$ 20.5	$ 22.9	$ 53.2	$ 59.9