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Discontinued Operations - Additional Information (Detail) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Sep. 30, 2016
Line Items          
Tangible and intangible asset impairments   $ 0 $ 1,000,000 $ 994,000,000  
Social and Mobile Games [Member]          
Line Items          
Payments of Distributions to Affiliates   235,000,000      
Social and Mobile Games [Member] | Discontinued Operations, Disposed of by Sale [Member]          
Line Items          
Disposal Group, Including Discontinued Operation, Consideration   4,400,000,000     $ 4,400,000,000
Gain from discontinued operations   4,180,000,000 0 0  
Escrow Deposit $ 259,000,000 259,000,000     $ 264,000,000
Discontinued Operations [Member]          
Line Items          
Tangible and intangible asset impairments   0 0 95,000,000  
Discontinued Operations [Member] | Showboat Atlantic City [Member] | Discontinued Operations, Disposed of by Sale [Member]          
Line Items          
Discontinued Operation, Other Liabilities       18,000,000  
Discontinued Operation, Accrued Liabilities, Current       26,000,000  
Tangible and intangible asset impairments   0 0 10,000,000  
Discontinued Operations [Member] | Harrahs Tunica [Member] | Discontinued Operations, Disposed of by Means Other than Sale, Abandonment [Member]          
Line Items          
Discontinued Operation, Accrued Liabilities, Current       16,000,000  
Tangible and intangible asset impairments   0 $ 0 $ 68,000,000  
Caesars Acquisition Company [Member] | Social and Mobile Games [Member] | Discontinued Operations, Disposed of by Sale [Member]          
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        
Caesars Interactive Entertainment [Member] | Social and Mobile Games [Member] | Discontinued Operations, Disposed of by Sale [Member]          
Line Items          
Payments of Distributions to Affiliates   1,100,000,000      
CGP | Social and Mobile Games [Member] | Discontinued Operations, Disposed of by Sale [Member]          
Line Items          
Income Taxes Paid 0 240,000,000      
Disposal Group, Including Discontinued Operation, Accrued Liabilities $ 63,000,000 63,000,000      
Payments for Previous Disposition   $ 5,000,000