Basis Of Presentation (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			3 Months Ended					12 Months Ended
	Mar. 31, 2013 D	Mar. 31, 2012 D	Dec. 31, 2012	Mar. 31, 2013 Racing Operations	Mar. 31, 2012 Racing Operations	Mar. 31, 2013 Online Operations	Mar. 31, 2012 Online Operations	Mar. 31, 2012 Gaming Operations	Dec. 31, 2013 Gaming Operations
Promotional Allowance [Line Items]
Live Racing Days	56	56
Customer Loyalty Program Liability	$ 2.1		$ 2.1
Promotional Allowances	7.3	4.4		0.2	0.2	2.4	1.7	2.5	4.7
Estimated Cost Of Providing Promotional Allowances	$ 2.3	$ 1.2