Quarterly report pursuant to Section 13 or 15(d)

Benefit Plans - Other Plans (Details)

v3.10.0.1
Benefit Plans - Other Plans (Details)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2018
USD ($)
plan
$ / shares
shares
Sep. 30, 2017
USD ($)
shares
Dec. 31, 2017
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of other share-based benefit plans | plan     3    
Options granted (in shares) | shares     0 0  
Share-based payment expense | $ $ 29,405 $ 34,891 $ 99,853 $ 94,588  
Employees and Non Employee Stock Option          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Weighted average grant date fair value of options granted (in dollars per share) | $ / shares     $ 1.48    
Total intrinsic value of stock options exercised | $     $ 205,963 148,133  
Number of net settled shares issued as a result of exercise of stock options and vesting of restricted stock units (in shares) | shares     18,510,000    
Share-based payment expense | $ 11,504 21,454 $ 51,939 61,091  
Restricted Stock Units (RSUs) and Performance Shares          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based payment expense | $ 17,901 $ 13,437 47,914 33,497  
Total intrinsic value of restricted stock units and stock awards vested | $     $ 75,762 $ 46,920  
Shares granted (in shares) | shares     15,072,000    
Incremental shares granted (in shares) | shares     180,000    
Restricted Stock Units          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of net settled shares issued as a result of exercise of stock options and vesting of restricted stock units (in shares) | shares     6,659,000    
Performance-based Share Awards          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares granted (in shares) | shares     3,780,000    
Restricted Stock Units RSU and Stock Options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Total unrecognized compensation costs related to unvested share based payment awards for restricted stock units, net of estimated forfeitures | $ $ 274,610   $ 274,610   $ 241,521
Weighted average expected period for recognition of compensation expenses     1 year 10 months 2 days