Investments in and Advances to Real Estate Joint Ventures - Joint Venture Investments Accounted for Under the Equity Method, Debt Details (Details) - USD ($) $ in Millions		6 Months Ended	12 Months Ended
		Jun. 30, 2025	Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]
Mortgage and notes payable		$ 1,468.1	$ 1,473.7
Prudential Investment Program [Member]
Schedule of Equity Method Investments [Line Items]
Mortgage and notes payable		$ 266.9	$ 268.5
Weighted average interest rate		5.38%	5.47%
Weighted average remaining term (Month)	[1]	26 months 9 days	19 months 18 days
KIR [Member]
Schedule of Equity Method Investments [Line Items]
Mortgage and notes payable		$ 274.1	$ 273.9
Weighted average interest rate		4.70%	5.82%
Weighted average remaining term (Month)	[1]	21 months 6 days	27 months 6 days
R2G Venture LLC [Member]
Schedule of Equity Method Investments [Line Items]
Mortgage and notes payable		$ 69.7	$ 68.7
Weighted average interest rate		2.90%	2.90%
Weighted average remaining term (Month)	[1]	68 months 21 days	74 months 18 days
CPP [Member]
Schedule of Equity Method Investments [Line Items]
Mortgage and notes payable		$ 80.0	$ 80.6
Weighted average interest rate		4.88%	4.88%
Weighted average remaining term (Month)	[1]	13 months 3 days	19 months
Other Institutional Joint Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Mortgage and notes payable		$ 235.1	$ 234.7
Weighted average interest rate		5.31%	5.76%
Weighted average remaining term (Month)	[1]	17 months 21 days	23 months 21 days
Other Joint Venture Programs [Member]
Schedule of Equity Method Investments [Line Items]
Mortgage and notes payable		$ 542.3	$ 547.3
Weighted average interest rate		5.00%	4.98%
Weighted average remaining term (Month)	[1]	36 months 9 days	40 months 24 days

[1] Includes extension options