Financial Instruments and Fair Value Measurements - Schedule of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Fair value, liability derivatives	$ (8,892)	$ (46)
Derivative Asset	28,989	54,902
Fund IV | Interest Rate Caps | Other Assets
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	54,500
Core Portfolio
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	856,000
Fair value, derivatives, net	13,868	40,838
Core Portfolio | Interest Rate Swaps
Derivatives, Fair Value [Line Items]
Fair value, liability derivatives	$ (8,807)	$ (46)
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Liabilities	Liabilities
Derivative Asset	$ 22,675	$ 40,884
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Assets	Assets
Core Portfolio | Interest Rate Swaps | Accounts payable and other liabilities
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	$ 225,000
Core Portfolio | Interest Rate Swaps | Other Assets
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	$ 631,000
Core Portfolio | Interest Rate Swaps | Minimum | Accounts payable and other liabilities
Derivatives, Fair Value [Line Items]
Derivative Effective Date	2022-12
Derivative Maturity Date	2027-07
Strike Rate	3.61%
Core Portfolio | Interest Rate Swaps | Minimum | Other Assets
Derivatives, Fair Value [Line Items]
Derivative Effective Date	2022-05
Derivative Maturity Date	2025-03
Strike Rate	1.98%
Core Portfolio | Interest Rate Swaps | Maximum | Accounts payable and other liabilities
Derivatives, Fair Value [Line Items]
Derivative Effective Date	2023-10
Derivative Maturity Date	2029-12
Strike Rate	4.69%
Core Portfolio | Interest Rate Swaps | Maximum | Other Assets
Derivatives, Fair Value [Line Items]
Derivative Effective Date	2023-05
Derivative Maturity Date	2030-07
Strike Rate	3.36%
Core Portfolio | Fund IV | Interest Rate Caps | Other Assets
Derivatives, Fair Value [Line Items]
Derivative Effective Date	2023-12
Derivative Maturity Date	2025-12
Fund Portfolio | Fund II | Interest Rate Swaps
Derivatives, Fair Value [Line Items]
Derivative Asset	$ 634	$ 1,108
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Assets	Assets
Fund Portfolio | Fund II | Interest Rate Swaps | Other Assets
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	$ 50,000
Derivative Effective Date	2023-01
Derivative Maturity Date	2029-12
Fund Portfolio | Fund II | Interest Rate Swaps | Minimum | Other Assets
Derivatives, Fair Value [Line Items]
Strike Rate	3.23%
Fund Portfolio | Fund II | Interest Rate Swaps | Maximum | Other Assets
Derivatives, Fair Value [Line Items]
Strike Rate	3.23%
Fund Portfolio | Fund III | Interest Rate Caps
Derivatives, Fair Value [Line Items]
Derivative Asset	$ 26	$ 232
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Assets	Assets
Fund Portfolio | Fund III | Interest Rate Caps | Other Assets
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	$ 33,000
Derivative Effective Date	2023-09
Derivative Maturity Date	2025-10
Fund Portfolio | Fund III | Interest Rate Caps | Minimum | Other Assets
Derivatives, Fair Value [Line Items]
Strike Rate	5.50%
Fund Portfolio | Fund III | Interest Rate Caps | Maximum | Other Assets
Derivatives, Fair Value [Line Items]
Strike Rate	5.50%
Fund Portfolio | Fund IV | Interest Rate Swaps
Derivatives, Fair Value [Line Items]
Fair value, liability derivatives	$ (29)	$ (1,093)
Fund Portfolio | Fund IV | Interest Rate Swaps | Minimum | Other Assets
Derivatives, Fair Value [Line Items]
Strike Rate	6.00%
Fund Portfolio | Fund IV | Interest Rate Swaps | Maximum | Other Assets
Derivatives, Fair Value [Line Items]
Strike Rate	6.00%
Fund Portfolio | Fund IV | Interest Rate Caps
Derivatives, Fair Value [Line Items]
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Assets	Assets
Fund Portfolio | Fund V
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	$ 416,336
Fair value, derivatives, net	5,540	$ 11,585
Fund Portfolio | Fund V | Interest Rate Swaps
Derivatives, Fair Value [Line Items]
Fair value, liability derivatives	$ (85)	$ 0
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Liabilities	Liabilities
Derivative Asset	$ 5,523	$ 11,585
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Assets	Assets
Fund Portfolio | Fund V | Interest Rate Swaps | Accounts payable and other liabilities
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	$ 28,480
Derivative Effective Date	2023-06
Derivative Maturity Date	2025-06
Fund Portfolio | Fund V | Interest Rate Swaps | Other Assets
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	$ 315,409
Fund Portfolio | Fund V | Interest Rate Swaps | Minimum | Accounts payable and other liabilities
Derivatives, Fair Value [Line Items]
Strike Rate	4.54%
Fund Portfolio | Fund V | Interest Rate Swaps | Minimum | Other Assets
Derivatives, Fair Value [Line Items]
Derivative Effective Date	2022-04
Derivative Maturity Date	2024-03
Strike Rate	1.14%
Fund Portfolio | Fund V | Interest Rate Swaps | Maximum | Accounts payable and other liabilities
Derivatives, Fair Value [Line Items]
Strike Rate	4.54%
Fund Portfolio | Fund V | Interest Rate Swaps | Maximum | Other Assets
Derivatives, Fair Value [Line Items]
Derivative Effective Date	2023-07
Derivative Maturity Date	2026-05
Strike Rate	4.34%
Fund Portfolio | Fund V | Interest Rate Caps
Derivatives, Fair Value [Line Items]
Derivative Asset	$ 102	$ 0
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Assets	Assets
Fund Portfolio | Fund V | Interest Rate Caps | Other Assets
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	$ 72,447
Fund Portfolio | Fund V | Interest Rate Caps | Minimum | Other Assets
Derivatives, Fair Value [Line Items]
Derivative Effective Date	2023-01
Derivative Maturity Date	2024-01
Strike Rate	3.64%
Fund Portfolio | Fund V | Interest Rate Caps | Maximum | Other Assets
Derivatives, Fair Value [Line Items]
Derivative Effective Date	2023-08
Derivative Maturity Date	2025-09
Strike Rate	5.00%