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Summary of Significant Accounting Policies (Details 5) (USD $)
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Stock-based compensation costs      
Time period of historical volatility of stock used to estimate expected volatility 5 years 5 months 12 days    
Expected dividend yield assumption (as a percent) 0.00%    
Options granted 916,522    
Accrued salaries and wages $ 70,908,000   $ 86,498,000
Stock based compensation expense 2,600,000 6,300,000  
Weighted-average assumptions used in the Black-Scholes option-pricing model      
Risk-free interest rate (as a percent) 1.68% 1.08%  
Expected volatility (as a percent) 44.80% 46.27%  
Weighted-average expected life 5 years 5 months 12 days 6 years 6 months 25 days  
GLPI
      
Stock-based compensation costs      
Number of awards into which each employee stock options and SARs converted in connection with spinoff 2    
Phantom stock unit awards
      
Stock-based compensation costs      
Accrued salaries and wages 2,400,000   6,800,000
Stock based compensation expense 1,400,000 2,800,000  
Total compensation cost related to nonvested awards not yet recognized 15,700,000    
Period for recognition of unrecognized compensation cost 2 years 9 months 22 days    
Amounts paid on cash settled awards 5,500,000 3,600,000  
Phantom stock unit awards | Minimum
      
Stock-based compensation costs      
Vesting period 4 years    
Phantom stock unit awards | Maximum
      
Stock-based compensation costs      
Vesting period 5 years    
Stock appreciation rights
      
Stock-based compensation costs      
Accrued salaries and wages 11,300,000   11,400,000
Stock based compensation expense 300,000 2,800,000  
Vesting period 4 years    
Total compensation cost related to nonvested awards not yet recognized 11,900,000    
Period for recognition of unrecognized compensation cost 2 years 7 months 13 days    
Amounts paid on cash settled awards $ 500,000 $ 700,000