Quarterly report pursuant to Section 13 or 15(d)

EQUITY AND EARNINGS PER SHARE - Summary of Outstanding Options (Details)

v3.19.1
EQUITY AND EARNINGS PER SHARE - Summary of Outstanding Options (Details)
3 Months Ended
Mar. 31, 2019
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]  
Beginning balance, Outstanding options (in shares) 8,498,138
Options granted (in shares) 4,600,000
Options exercised (in shares) (1,641,222)
Options expired unexercised (in shares) 0
Ending balance, Outstanding options (in shares) 11,456,916
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]  
Weighted average exercise price, granted (in dollars per share) | $ / shares $ 16.50
Weighted average exercise price, exercised (in dollars per share) | $ / shares $ 14.16