Goodwill and Other Intangible Assets - Impairment Charges for Goodwill and Other Non-Amortizing Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Schedule of Impairment Charges for Goodwill and Other Non-Amortizing Intangible Assets [Line Items]
Goodwill, Impairment Loss	$ 8.2	$ 247.0	$ 195.2	$ 3.0	$ 92.0
Total impairment of goodwill and other non-amortizing intangible assets			437.2	11.0	184.0
Trademarks [Member]
Schedule of Impairment Charges for Goodwill and Other Non-Amortizing Intangible Assets [Line Items]
Non-amortizing intangible assets other than goodwill, Impairment Loss			209.0	8.0	20.0
Gaming Rights and other [Member]
Schedule of Impairment Charges for Goodwill and Other Non-Amortizing Intangible Assets [Line Items]
Non-amortizing intangible assets other than goodwill, Impairment Loss			$ 33.0	$ 0	$ 72.0