Goodwill and Other Intangible Assets - Carrying Value and Accumulated Amortization for Each Major Class of Intangible Assets Other Than Goodwill (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Intangible Assets Excluding Goodwill [Line Items]
Gross Carrying Amount	$ 1,786.8	$ 1,803.0
Accumulated Amortization	(885.4)	(775.4)
Net Carrying Amount	901.4	1,027.6
Carrying value and accumulated amortization for each major class of intangible assets other than goodwill
Non-amortizing intangible assets	2,758.8	2,958.1
Total intangible assets other than goodwill	3,660.2	3,985.7
Trademarks [Member]
Carrying value and accumulated amortization for each major class of intangible assets other than goodwill
Non-amortizing intangible assets	1,601.5	1,699.7
Gaming rights [Member]
Carrying value and accumulated amortization for each major class of intangible assets other than goodwill
Non-amortizing intangible assets	1,157.3	1,258.4
Customer relationships [Member]
Intangible Assets Excluding Goodwill [Line Items]
Weighted Average Remaining Useful Life (in years)	6 years 3 months 18 days
Gross Carrying Amount	1,432.1	1,456.7
Accumulated Amortization	(699.7)	(618.0)
Net Carrying Amount	732.4	838.7
Contract rights [Member]
Intangible Assets Excluding Goodwill [Line Items]
Weighted Average Remaining Useful Life (in years)	1 year 2 months 12 days
Gross Carrying Amount	145.1	145.1
Accumulated Amortization	(76.4)	(66.3)
Net Carrying Amount	68.7	78.8
Patented technology [Member]
Intangible Assets Excluding Goodwill [Line Items]
Weighted Average Remaining Useful Life (in years)	3 years
Gross Carrying Amount	166.8	156.7
Accumulated Amortization	(94.5)	(76.6)
Net Carrying Amount	72.3	80.1
Gaming rights [Member]
Intangible Assets Excluding Goodwill [Line Items]
Weighted Average Remaining Useful Life (in years)	10 years 9 months 18 days
Gross Carrying Amount	42.8	42.8
Accumulated Amortization	(14.8)	(12.8)
Net Carrying Amount	28.0	30.0
Trademarks [Member]
Intangible Assets Excluding Goodwill [Line Items]
Weighted Average Remaining Useful Life (in years)	0 years
Gross Carrying Amount	0	1.7
Accumulated Amortization	0	(1.7)
Net Carrying Amount	$ 0	$ 0