Investments in and Advances to Real Estate Joint Ventures - Joint Venture Investments Accounted for Under the Equity Method, Debt Details (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Mar. 31, 2025	Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]
Mortgage and notes payable		$ 1,471.1	$ 1,473.7
Prudential Investment Program [Member]
Schedule of Equity Method Investments [Line Items]
Mortgage and notes payable		$ 267.8	$ 268.5
Weighted average interest rate		5.38%	5.47%
Weighted average remaining term (Month)	[1]	29 months 6 days	19 months 18 days
KIR [Member]
Schedule of Equity Method Investments [Line Items]
Mortgage and notes payable		$ 274.0	$ 273.9
Weighted average interest rate		4.70%	5.82%
Weighted average remaining term (Month)	[1]	24 months 6 days	27 months 6 days
R2G Venture LLC [Member]
Schedule of Equity Method Investments [Line Items]
Mortgage and notes payable		$ 69.2	$ 68.7
Weighted average interest rate		2.90%	2.90%
Weighted average remaining term (Month)	[1]	71 months 21 days	74 months 18 days
CPP [Member]
Schedule of Equity Method Investments [Line Items]
Mortgage and notes payable		$ 80.3	$ 80.6
Weighted average interest rate		4.88%	4.88%
Weighted average remaining term (Month)	[1]	16 months	19 months
Other Institutional Joint Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Mortgage and notes payable		$ 234.9	$ 234.7
Weighted average interest rate		5.99%	5.76%
Weighted average remaining term (Month)	[1]	20 months 21 days	23 months 21 days
Other Joint Venture Programs [Member]
Schedule of Equity Method Investments [Line Items]
Mortgage and notes payable		$ 544.9	$ 547.3
Weighted average interest rate		4.96%	4.98%
Weighted average remaining term (Month)	[1]	37 months 24 days	40 months 24 days

[1] Includes extension options