FAIR VALUE MEASUREMENTS AND THE FAIR VALUE OPTION - Schedule of Significant Inputs (Details)	Dec. 31, 2022
Capitalization Rates | Multifamily | Minimum | Level 3 | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0580
Capitalization Rates | Multifamily | Minimum | Level 3 | Valuation Technique, Direct Capitalization
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0380
Capitalization Rates | Multifamily | Maximum | Level 3 | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0750
Capitalization Rates | Multifamily | Maximum | Level 3 | Valuation Technique, Direct Capitalization
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0570
Capitalization Rates | Office | Minimum | Level 3 | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0520
Capitalization Rates | Office | Minimum | Level 3 | Valuation Technique, Direct Capitalization
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0420
Capitalization Rates | Office | Maximum | Level 3 | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0750
Capitalization Rates | Office | Maximum | Level 3 | Valuation Technique, Direct Capitalization
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0870
Capitalization Rates | Industrial | Minimum | Level 3 | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0500
Capitalization Rates | Industrial | Minimum | Level 3 | Valuation Technique, Direct Capitalization
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0380
Capitalization Rates | Industrial | Maximum | Level 3 | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0630
Capitalization Rates | Industrial | Maximum | Level 3 | Valuation Technique, Direct Capitalization
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0830
Capitalization Rates | Retail | Minimum | Level 3 | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0650
Capitalization Rates | Hotel | Level 3 | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0600
Discount Rates | Multifamily | Minimum | Level 3 | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0800
Discount Rates | Multifamily | Maximum | Level 3 | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0980
Discount Rates | Office | Minimum | Level 3 | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0750
Discount Rates | Office | Maximum | Level 3 | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0930
Discount Rates | Industrial | Minimum | Level 3 | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0630
Discount Rates | Industrial | Maximum | Level 3 | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0780
Discount Rates | Retail | Minimum | Level 3 | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0830
Discount Rates | Hotel | Level 3 | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0830
Measurement Input, Credit Spread | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0122
Measurement Input, Credit Spread | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0725