Goodwill and Other Intangible Assets - Carrying Value and Accumulated Amortization for Each Major Class of Intangible Assets Other Than Goodwill (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Intangible Assets Excluding Goodwill [Line Items]
Gross Carrying Amount	$ 939	$ 939
Accumulated Amortization	(670)	(654)
Net Carrying Amount	269	285
Non-amortizing intangible assets	148	148
Intangible assets other than goodwill	417	433
Trademarks [Member]
Intangible Assets Excluding Goodwill [Line Items]
Non-amortizing intangible assets	126	126
Gaming rights
Intangible Assets Excluding Goodwill [Line Items]
Non-amortizing intangible assets	$ 22	22
Customer relationships [Member]
Intangible Assets Excluding Goodwill [Line Items]
Weighted Average Remaining Useful Life (in years)	4 years 2 months
Gross Carrying Amount	$ 893	893
Accumulated Amortization	(645)	(630)
Net Carrying Amount	$ 248	263
Contract rights [Member]
Intangible Assets Excluding Goodwill [Line Items]
Weighted Average Remaining Useful Life (in years)	7 years 9 months
Gross Carrying Amount	$ 3	3
Accumulated Amortization	(1)	(1)
Net Carrying Amount	$ 2	2
Gaming rights
Intangible Assets Excluding Goodwill [Line Items]
Weighted Average Remaining Useful Life (in years)	7 years 3 months
Gross Carrying Amount	$ 43	43
Accumulated Amortization	(24)	(23)
Net Carrying Amount	$ 19	$ 20