EQUITY AND EARNINGS PER SHARE - Options Outstanding by Issuance (Details) - shares	Jun. 30, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options (in shares)	19,600,155	14,428,655
Held by the Manager
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options (in shares)	16,840,175
Issued to the Manager and subsequently assigned to certain of the Manager’s employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options (in shares)	2,753,980
Issued to the independent directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options (in shares)	6,000