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	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Intangible Assets Excluding Goodwill [Line Items]
Gross Carrying Amount	$ 1,586.1	$ 1,546.8
Accumulated Amortization	(848.6)	(816.8)
Net Carrying Amount	737.5	730.0
Carrying value and accumulated amortization for each major class of intangible assets other than goodwill
Non-amortizing intangible assets	2,724.5	2,757.7
Intangible assets other than goodwill	3,462.0	3,487.7
Gaming rights [Member]
Carrying value and accumulated amortization for each major class of intangible assets other than goodwill
Non-amortizing intangible assets	1,130.8	1,159.5
Trademarks [Member]
Carrying value and accumulated amortization for each major class of intangible assets other than goodwill
Non-amortizing intangible assets	1,593.7	1,598.2
Customer relationships [Member]
Intangible Assets Excluding Goodwill [Line Items]
Weighted Average Remaining Useful Life (in years)	5 years 11 months 0 days
Gross Carrying Amount	1,265.6	1,268.1
Accumulated Amortization	(667.3)	(645.5)
Net Carrying Amount	598.3	622.6
Contract rights [Member]
Intangible Assets Excluding Goodwill [Line Items]
Weighted Average Remaining Useful Life (in years)	3 years 7 months
Gross Carrying Amount	85.7	97.6
Accumulated Amortization	(80.1)	(79.4)
Net Carrying Amount	5.6	18.2
Patented technology [Member]
Intangible Assets Excluding Goodwill [Line Items]
Weighted Average Remaining Useful Life (in years)	2 years 7 months
Gross Carrying Amount	188.2	138.3
Accumulated Amortization	(83.8)	(76.5)
Net Carrying Amount	104.4	61.8
Gaming rights [Member]
Intangible Assets Excluding Goodwill [Line Items]
Weighted Average Remaining Useful Life (in years)	10 years 6 months
Gross Carrying Amount	42.8	42.8
Accumulated Amortization	(16.1)	(15.4)
Net Carrying Amount	26.7	27.4
Trademarks [Member]
Intangible Assets Excluding Goodwill [Line Items]
Weighted Average Remaining Useful Life (in years)	0 years 9 months
Gross Carrying Amount	3.8	0
Accumulated Amortization	(1.3)	0
Net Carrying Amount	$ 2.5	$ 0