General form of registration statement for all companies including face-amount certificate companies

Commitments and Contingencies - Additional Information (Details)

v3.21.2
Commitments and Contingencies - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Jun. 30, 2021
Realized tax benefits payable under Tax Receivable Agreement       85.00%
Unfunded investment commitments       $ 4.4
Owl Rock Capital and Subsidiaries and Owl Rock Capital Securities LLC        
Lease expense $ 4.5 $ 3.8 $ 2.1  
Operating lease description The Company leases two offices in New York, one office in Connecticut, one office in California and one office in London, England pursuant to current lease agreements expiring through 2031. The Company has the option to extend the term of the lease for the Connecticut and California office spaces for five years from the current 2023 and 2024 expiration dates, respectively. No such option exists for the two New York office leases. The leases include escalation clauses and require the Company to pay for utilities, taxes and maintenance expenses.      
Interest Promissory Note [Member] | Owl Rock Capital and Subsidiaries and Owl Rock Capital Securities LLC        
Borrowing capacity $ 50.0      
Borrowing capacity description Interest on the promissory note matches the one paid pursuant to Revolving Credit Facility #1. The unpaid principal balance and accrued interest are payable from time to time at the discretion of the Owl Rock product but immediately due and payable upon 120 days written notice by the Company. The promissory note matured on December 31, 2020.