RELATED-PARTY TRANSACTIONS - Additional Information (Details)							3 Months Ended		12 Months Ended	16 Months Ended
	Oct. 06, 2023	Jul. 31, 2023 USD ($)	Jun. 29, 2023 USD ($)	Jun. 27, 2023 USD ($)	May 22, 2023 USD ($)	Oct. 01, 2019 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	Mar. 31, 2024 USD ($)	May 01, 2023 USD ($)	May 07, 2021 USD ($) instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Revenues							$ 115,329,000	$ 59,401,000
General and Administrative Expense							3,389,000	1,924,000
Interest expense							22,215,000	16,549,000
Oaktree Opportunities Fund XI, L.P.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Capital commitment							750,000,000
Oaktree Capital Group Excluding Consolidated Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total corporate investments							1,438,991,000		$ 1,532,208,000	$ 1,438,991,000
Affiliates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Reimbursable expenses payable						$ 750,000
Termination period (in days)						90 days
Revolving Line Of Credit Note With Oaktree Capital Management L.P. | Related Party | Oaktree Opportunities Fund XII, L.P.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Capital commitment					$ 750,000,000
Administrative Service | Affiliates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
General and Administrative Expense							200,000	200,000
Investment In Oaktree Opportunities Fund XI | Related Party | Oaktree Opportunities Fund XI, L.P.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Capital commitment							750,000,000
Payments to acquire investments							0			637,500,000
Brookfield Deposit Agreement | Related Party
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposit agreement, aggregate											$ 750,000,000
U.S. Treasury and other securities							250,000,000			250,000,000
Interest income							115,600
Average balance deposit							250,000,000			250,000,000
Non-Traded REIT Acquisition | Related Party | OCG Non-Traded REIT Holdings, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Voting interest acquired (percent)				100.00%
Non-Traded REIT Acquisition | Related Party | OCG Non-Traded REIT Holdings, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Payments to acquire investments		$ 13,900,000		$ 307,000,000
Total corporate investments							299,600,000			299,600,000
Brookfield Corporate Treasury Ltd Treasury | Non-Traded REIT Acquisition | Related Party
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Capital commitment			$ 200,000,000
BOH | SPV Credit Facility | Related Party | Opps XI
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total corporate investments							157,000,000			157,000,000
Revolving credit facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt obligations of the consolidated funds							0			0
Outstanding balance under the revolving credit facility							0			0
Revolving credit facility | Subordinated Credit Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Credit facility							$ 250,000,000			250,000,000
Revolving credit facility | Related Party | Subordinated Credit Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument maturity extension term	1 year
Revolving credit facility | Credit Agreement | Oaktree Capital Group Excluding Consolidated Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Spread on variable rate							1.10%
Revolving credit facility | Credit Agreement | Related Party | Subordinated Credit Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt obligations of the consolidated funds							$ 0			0
Debt instrument maturity extension term	1 year
Outstanding balance under the revolving credit facility							0			$ 0
Revolving credit facility | Credit Agreement | Related Party | Subordinated Credit Facility | Secured Overnight Financing Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Spread on variable rate	1.60%
Revolving credit facility | Credit Agreement | Related Party | Subordinated Credit Facility | Base Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Spread on variable rate	0.50%
Revolving credit facility | Credit Agreement | Oaktree Capital Management, L.P. | Affiliates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest income							584,000	0
Revolving credit facility | Credit Agreement | Oaktree Capital Management, L.P. | Revolving Line Of Credit Note With Oaktree Capital Management L.P. | Affiliates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Proceeds from borrowing							67,000,000		26,000,000
Oaktree Capital Management, L.P. | Revolving credit facility | Credit Agreement | Revolving Line Of Credit Note With Oaktree Capital Management L.P. | Affiliates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Proceeds from borrowing							0		$ 48,000,000
Interest expense							159,000	169,000
Oaktree Capital Management, L.P. | Revolving credit facility | Credit Agreement | Oaktree Capital I, L.P
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of debt instruments | instrument												2
Credit facility												$ 250,000,000
Unconsolidated Oaktree Funds | Affiliates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Revenues							$ 115,300,000	$ 59,400,000