Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Schedule of Impact of Early Adoption (Details)

v3.5.0.2
Summary of Significant Accounting Policies - Schedule of Impact of Early Adoption (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended 9 Months Ended
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Sep. 30, 2015
Jun. 30, 2016
Sep. 30, 2016
Sep. 30, 2015
New Accounting Pronouncement, Early Adoption [Line Items]              
Income tax expense $ (111,556) $ (106,310) $ (108,242) $ (112,543) $ (214,552) $ (326,108) $ (296,893)
Net income $ 193,901 $ 174,965 $ 172,440 $ 166,550 $ 347,405 $ 541,306 $ 375,091
Net income per common share--basic (in dollars per share) $ 0.04 $ 0.04 $ 0.03 $ 0.03 $ 0.07 $ 0.11 $ 0.07
Net income per common share--diluted (in dollars per share) $ 0.04 $ 0.04 $ 0.03 $ 0.03 $ 0.07 $ 0.11 $ 0.07
As reported              
New Accounting Pronouncement, Early Adoption [Line Items]              
Income tax expense   $ (108,260) $ (109,343)   $ (217,603)    
Net income   $ 173,015 $ 171,339   $ 344,354    
Net income per common share--basic (in dollars per share)   $ 0.04 $ 0.03   $ 0.07    
Net income per common share--diluted (in dollars per share)   $ 0.03 $ 0.03   $ 0.07