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Equity Method Investments, Number Of Closed-End Funds

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Gain (Loss) on Equity Method Investments

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Income (Loss) From Equity Method Investments, Fair Value Accounting

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Income (Loss) From Equity Method Investments, Performance Allocations

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Income (Loss) From Equity Method Investments, Underlying Equity In Net Assets

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Investment in Loan Pool Portfolio, Accretion Interest Income Recognized

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Payments to Acquire Equity Method Investments, New and Existing Investments

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Proceeds from Equity Method Investments, Dividends and Distributions, Operating and Investing

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Amount of gain (loss) from deconsolidation of subsidiary and derecognition of group of assets constituting transfer of business or nonprofit activity, excluding conveyance of oil and gas mineral rights and transfer of good or service in contract with customer.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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The amount of unfunded commitments for which the entity is obligated, to those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments).

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Amount of realized and unrealized gain (loss) on investment.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Fair value portion of investments in an entity not consolidated. Includes, but is not limited to, investments in an entity that is affiliated with the reporting entity by means of direct or indirect ownership, an entity in which the reporting entity shares control of the entity with another party or group, an entity which the company has significant influence, but does not have control and subsidiaries that are not required to be consolidated and are accounted for using the equity or cost method.

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Percentage of an entity's outstanding debt that is designated as a hedged item in cash flow, fair value, or net investment hedge.

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UNCONSOLIDATED INVESTMENTS - Narrative (Details) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2022 USD ($) fund	Dec. 31, 2021 USD ($)	Dec. 31, 2022 USD ($) joint_venture fund property	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Schedule of Equity Method Investments [Line Items]
Proceeds from equity method investments			$ 235.2
Interest income recognized			178.4	$ 389.0	$ 81.0
Fair value gains			114.6	213.5	47.2
Fair value of unconsolidated investments	$ 2,093.7	$ 1,794.8	2,093.7	1,794.8
Income from unconsolidated investment			$ 41.8
Number of joint ventures with unfulfilled capital commitments \| joint_venture			9
Income from unconsolidated investments	$ 178.4	389.0	$ 178.4	389.0	81.0
Gibraltar, Pounds \| Foreign Currency Translation
Schedule of Equity Method Investments [Line Items]
Percentage of Debt Hedged by Interest Rate Derivatives	92.00%		92.00%
Equity Method Investments
Schedule of Equity Method Investments [Line Items]
Unfunded capital commitments	$ 246.6		$ 246.6
Equity Method Investments Closed-End Funds
Schedule of Equity Method Investments [Line Items]
Unfunded capital commitments	$ 76.8		$ 76.8
Number of closed-end funds \| fund	4		4
Development Project Equity Commitments
Schedule of Equity Method Investments [Line Items]
Unfunded capital commitments	$ 87.4		$ 87.4
Recurring
Schedule of Equity Method Investments [Line Items]
Fair value of unconsolidated investments	$ 2,093.7	1,794.8	2,093.7	1,794.8
Joint Venture
Schedule of Equity Method Investments [Line Items]
Payments to joint venture			$ 361.3
Joint Venture \| Office Property \| Ireland
Schedule of Equity Method Investments [Line Items]
Number of properties generating distribution \| property			1
Joint Venture \| Multifamily \| Ireland
Schedule of Equity Method Investments [Line Items]
Number of properties generating distribution \| property			3
Montiavo
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage (as a percent)	49.00%		49.00%
Deconsolidation, gain (loss)			$ 31.9
Vintage Housing Holdings
Schedule of Equity Method Investments [Line Items]
Investments in joint ventures	$ 272.3	$ 157.9	272.3	157.9
Income from unconsolidated investments			119.8	41.4	22.8
MF Seed Portfolio
Schedule of Equity Method Investments [Line Items]
Income (Loss) From Equity Method Investments, Fair Value Accounting			43.8	92.1
Fair value gains			28.6	73.3
Income from unconsolidated investment			9.9	3.2
Income (loss) from unconsolidated investments, performance allocations			5.2	15.7
Income from unconsolidated investments			45.1	88.9
VHH
Schedule of Equity Method Investments [Line Items]
Income (Loss) From Equity Method Investments, Fair Value Accounting			119.8
Fair value gains			108.4
Income from unconsolidated investment			11.4
Income from unconsolidated investments			$ 119.8	$ 41.4	$ 22.8
Minimum \| Various Comingled Funds And Separate Accounts
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage (as a percent)	5.00%		5.00%
Maximum \| Various Comingled Funds And Separate Accounts
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage (as a percent)	50.00%		50.00%