Discontinued Operations Discontinued Operations - Additional Information (Details) - USD ($)	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Payments of Distributions to Affiliates		$ 63,000,000	$ 487,000,000
Social and Mobile Games [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Consideration	$ 4,400,000,000		4,400,000,000
Gain from discontinued operations	$ 4,161,000,000		$ 4,161,000,000	$ 4,200,000,000
Escrow Deposit		259,000,000		259,000,000
Social and Mobile Games [Member] | Discontinued Operations, Disposed of by Sale [Member] | CAC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operation, Tax Effect of Gain (Loss) from Disposal of Discontinued Operation		259,000,000		285,000,000
Discontinued Operation, Tax Effect of Adjustment to Prior Period Gain (Loss) on Disposal		26,000,000
Social and Mobile Games [Member] | Discontinued Operations, Disposed of by Sale [Member] | Caesars Interactive Entertainment [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Payments of Distributions to Affiliates		63,000,000		1,100,000,000
Social and Mobile Games [Member] | Discontinued Operations, Disposed of by Sale [Member] | CGP
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income Taxes Paid		$ 0		240,000,000
Disposal Group, Including Discontinued Operation, Accrued Liabilities				$ 63,000,000