Annual report pursuant to Section 13 and 15(d)

Employee Benefits and Share-Based Compensation - Summary of Restricted Unit Activity (Details)

v3.19.3.a.u2
Employee Benefits and Share-Based Compensation - Summary of Restricted Unit Activity (Details)
 12 Months Ended
Dec. 31, 2019
$ / shares
shares
Time-Based RSU Awards  
Number of Restricted Share Awards  
Non-vested as of January 1, 2019 | shares 2,973,032
Granted | shares 1,929,495
Vested | shares (1,430,291)
Forfeited or expired | shares (226,611)
Non-vested as of December 31, 2019 | shares 3,245,625
Non-vested and expected to vest as of December 31, 2019 | shares 3,245,625
Weighted- Average Grant-Date Fair Value  
Non-vested as of January 1, 2019 | $ / shares $ 53.98
Granted | $ / shares 55.00
Vested | $ / shares 53.02
Forfeited or expired | $ / shares 55.04
Non-vested as of December 31, 2019 | $ / shares 54.94
Non-vested and expected to vest as of December 31, 2019 | $ / shares $ 54.94
Performance-Based RSU Awards  
Number of Restricted Share Awards  
Non-vested as of January 1, 2019 | shares 825,614
Granted | shares 462,282
Vested | shares (121,000)
Forfeited or expired | shares (37,500)
Non-vested as of December 31, 2019 | shares 1,129,396
Non-vested and expected to vest as of December 31, 2019 | shares 483,976
Weighted- Average Grant-Date Fair Value  
Non-vested as of January 1, 2019 | $ / shares $ 56.58
Granted | $ / shares 55.27
Vested | $ / shares 56.27
Forfeited or expired | $ / shares 56.27
Non-vested as of December 31, 2019 | $ / shares 56.09
Non-vested and expected to vest as of December 31, 2019 | $ / shares $ 56.61
Market-Based RSU Awards  
Number of Restricted Share Awards  
Non-vested as of January 1, 2019 | shares 50,000
Non-vested as of December 31, 2019 | shares 50,000
Weighted- Average Grant-Date Fair Value  
Non-vested as of January 1, 2019 | $ / shares $ 59.43
Non-vested as of December 31, 2019 | $ / shares $ 59.43