Goodwill and Other Intangible Assets - Changes in Goodwill and Other Intangible Assets (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended	3 Months Ended			3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Gaming Rights [Member]	Mar. 31, 2013 Gaming Rights [Member]	Jun. 30, 2013 Gaming Rights [Member]	Jun. 30, 2012 Trademarks [Member]	Jun. 30, 2013 Trademarks [Member]	Dec. 31, 2012 Trademarks [Member]	Jun. 30, 2013 Conrad Punta Del Este Resort and Casino [Member] Baluma S.A. [Member]
Goodwill and Other Intangible Assets [Roll Forward]
Amortizing Intangible Assets, Beginning Balance			$ 1,027.6			$ 30.0	$ 30.0		$ 0	$ 0
Amortizing Intangible Assets, Impairments			0
Amortizing Intangible Assets, Amortization expense	(41.1)	(43.2)	(82.5)	(86.4)
Amortizing Intangible Assets, Foreign currency translation			(0.4)
Amortizing Intangible Assets, Additions			5.7
Amortizing Intangible Assets, Other			(1.8)
Amortizing Intangible Assets, Ending Balance	948.6		948.6		28.7		28.7		0	0
Goodwill, Beginning Balance			3,160.3
Goodwill, Impairments			0
Goodwill, Disposals			(14.9)								(14.9)
Goodwill, Other			7.4
Goodwill, Ending Balance	3,152.8		3,152.8
Other Non-Amortizing Intangible Assets, Beginning Balance			2,958.1			1,258.4	1,258.4		1,699.0	1,699.7
Other Non-Amortizing Intangible Assets, Impairments			(23.0)		(3.0)	(20.0)	(23.0)	(33.0)
Other Non-Amortizing Intangible Assets, Foreign currency translation			(1.6)
Other Non-Amortizing Intangible Assets, Other			(0.4)
Other Non-Amortizing Intangible Assets, Ending Balance	2,933.1		2,933.1		1,234.1		1,234.1		1,699.0	1,699.7
Goodwill and Other Intangible Assets Narrative [Abstract]
Impairment of intangible assets excluding goodwill			23.0		3.0	20.0	23.0	33.0
Decrease in goodwill			$ 14.9								$ 14.9