Organization, Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Operating Partnership's Equity Interest (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)
Fund II and Mervyns II
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Operating Partnership Share of Capital	61.67%	[1]
Capital Called	$ 559.4	[1],[2]
Unfunded Commitment	$ 0.0	[1],[2]
Equity interest held by Operating Partnership	61.67%	[1],[3]
Preferred Return	8.00%	[1]
Total Distributions	$ 172.9	[1],[2]
Fund III
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Operating Partnership Share of Capital	24.54%
Capital Called	$ 448.1	[2]
Unfunded Commitment	$ 1.9	[2]
Equity interest held by Operating Partnership	24.54%	[3]
Preferred Return	6.00%
Total Distributions	$ 603.5	[2]
Fund IV
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Operating Partnership Share of Capital	23.12%
Capital Called	$ 503.4	[2]
Unfunded Commitment	$ 26.6	[2]
Equity interest held by Operating Partnership	23.12%	[3]
Preferred Return	6.00%
Total Distributions	$ 221.4	[2]
Fund V
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Operating Partnership Share of Capital	20.10%
Capital Called	$ 407.4	[2]
Unfunded Commitment	$ 112.6	[2]
Equity interest held by Operating Partnership	20.10%	[3]
Preferred Return	6.00%
Total Distributions	$ 105.8	[2]

[1] In January 2023, following the expiration of the lock-up period, Mervyns II distributed the 2.5 million shares of its investment in Albertsons to its partners; the Company received 1.6 million shares (Note 4, Note 8). The Company’s ownership in Mervyns II is 40.0%.

[2] Represents the total for the Funds, including the Operating Partnership and noncontrolling interests’ shares.

[3] Amount represents the current economic ownership at December 31, 2023, which could differ from the stated legal ownership based upon the cumulative preferred returns of the respective Fund.