Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Additional Information (Details)

v3.5.0.2
Subsequent Events - Additional Information (Details) - USD ($)
$ / shares in Units, shares in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Oct. 26, 2016
Oct. 01, 2016
Oct. 25, 2016
Dec. 31, 2016
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2017
Dec. 31, 2015
Subsequent Event [Line Items]                
Common stock repurchased, value         $ 1,214,083,000      
Common Stock                
Subsequent Event [Line Items]                
Stock repurchase program, aggregate authorized amount         $ 8,000,000,000      
Open Market                
Subsequent Event [Line Items]                
Common stock repurchased (in shares)         315,051 432,616    
Common stock repurchased, value         $ 1,214,083,000 $ 1,646,798,000    
Forecast                
Subsequent Event [Line Items]                
Expected dividends (in dollars per share)             $ 0.04  
Senior Notes | 5.875% Senior Notes Due 2020                
Subsequent Event [Line Items]                
Stated interest rate         5.875%     5.875%
Senior Notes | 5.875% Senior Notes Due 2020 | Forecast                
Subsequent Event [Line Items]                
Loss on extinguishment of debt       $ 24,229,000        
Subsequent Event                
Subsequent Event [Line Items]                
Dividend declared (in dollars per share) $ 0.01              
Subsequent Event | Common Stock                
Subsequent Event [Line Items]                
Stock repurchase program, additional authorized amount $ 2,000,000,000              
Stock repurchase program, aggregate authorized amount $ 10,000,000,000              
Subsequent Event | Open Market                
Subsequent Event [Line Items]                
Common stock repurchased (in shares)     18,548          
Common stock repurchased, value     $ 76,791,000          
Subsequent Event | Senior Secured Revolving Credit Facility                
Subsequent Event [Line Items]                
Additional borrowings   $ 310,000,000            
Subsequent Event | Senior Notes | 5.875% Senior Notes Due 2020                
Subsequent Event [Line Items]                
Debt outstanding   $ 650,000,000            
Stated interest rate   5.875%            
Purchase price of redeemed debt   $ 669,097,000            
Cash and equivalents to fund redemption   $ 359,097,000