Condensed Consolidated Statements of Comprehensive (Loss) Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net revenue:
Total net revenue	$ 252.9	$ 265.4
Operating expense:
Selling, general and administrative expense	24.1	24.9
Impairment of intangible assets	17.5	0.0
Transaction expense, net	0.3	3.5
Total operating expense	264.5	237.4
Operating (loss) income	(11.6)	28.0
Other income (expense):
Interest expense, net	(19.3)	(13.7)
Equity in (loss) income of unconsolidated affiliates	(3.3)	4.1
Total other expense	(22.6)	(9.6)
(Loss) income from continuing operations before provision for income taxes	(34.2)	18.4
Income tax benefit (provision)	11.6	(6.5)
(Loss) income from continuing operations, net of tax	(22.6)	11.9
Loss from discontinued operations, net of tax	(0.9)	(0.3)
Net (loss) income	(23.5)	11.6
Net loss attributable to noncontrolling interest	(0.1)	0.0
Net (loss) income and comprehensive (loss) income attributable to CDI	$ (23.4)	$ 11.6
Net (loss) income per common share data, basic:
Continuing operations (in dollars per share)	$ (570,000)	$ 0.30
Discontinued operations (in dollars per share)	(20,000.00)	(0.01)
Net income per common share data - basic (in dollars per share)	(590,000)	0.29
Net (loss) income per common share data, diluted:
Continuing operations (in dollars per share)	(570,000)	0.30
Discontinued operations (in dollars per share)	(20,000.00)	(0.01)
Net income per common share data - diluted (in dollars per share)	$ (590,000)	$ 0.29
Weighted average shares outstanding:
Basic (in shares)	39.7	40.4
Diluted (in shares)	39.7	40.6
Churchill Downs
Net revenue:
Churchill Downs	$ 23.5	$ 21.0
Operating expense:
Operating expense	26.6	23.4
Online Wagering
Net revenue:
Online Wagering	67.3	63.1
Operating expense:
Operating expense	50.1	45.1
Gaming
Net revenue:
Gaming	147.6	168.8
Operating expense:
Operating expense	124.8	125.0
All Other
Net revenue:
All Other	14.5	12.5
Operating expense:
Operating expense	$ 21.1	$ 15.5