Corporate Indebtedness - Schedule of Junior Subordinated Deferrable Interest Debentures and Principal Maturities (Details)	1 Months Ended
Jun. 30, 2005 USD ($) quarter	Jun. 30, 2024 USD ($)
Principal Repayments and Joint Venture Debt
Remaining 2024		$ 474,251,000
2025		530,493,000
2026		190,148,000
2027		2,140,000,000
2028		205,000,000
Thereafter		100,000,000
Total principal repayments		3,639,892,000
Trust Preferred Securities
Debt Instrument [Line Items]
Proceeds from issuance of debt	$ 100,000,000.0
Interest rate added to base rate (as a percent)	0.26%
Interest payment deferment, number of consecutive quarters \| quarter	8
Joint venture
Principal Repayments and Joint Venture Debt
Remaining 2024		1,432,137,000
2025		1,756,465,000
2026		362,120,000
2027		1,185,168,000
2028		0
Thereafter		2,130,300,000
Total principal repayments		6,866,190,000
Joint venture \| Mortgages and other loans payable
Scheduled Amortization
Remaining 2024		1,501,000
2025		0
2026		0
2027		0
2028		0
Thereafter		0
Total amortization of debt		1,501,000
Principal Repayments and Joint Venture Debt
Remaining 2024		272,750,000
2025		430,493,000
2026		190,148,000
2027		550,000,000
2028		205,000,000
Thereafter		0
Total principal repayments		1,648,391,000
Joint venture \| Revolving Credit Facility
Principal Repayments and Joint Venture Debt
Remaining 2024		0
2025		0
2026		0
2027		540,000,000
2028		0
Thereafter		0
Total principal repayments		540,000,000
Joint venture \| Unsecured Term Loans
Principal Repayments and Joint Venture Debt
Remaining 2024		200,000,000
2025		0
2026		0
2027		1,050,000,000
2028		0
Thereafter		0
Total principal repayments		1,250,000,000
Joint venture \| Trust Preferred Securities
Principal Repayments and Joint Venture Debt
Remaining 2024		0
2025		0
2026		0
2027		0
2028		0
Thereafter		100,000,000
Total principal repayments		100,000,000
Joint venture \| Senior Unsecured Notes
Principal Repayments and Joint Venture Debt
Remaining 2024		0
2025		100,000,000
2026		0
2027		0
2028		0
Thereafter		0
Total principal repayments		$ 100,000,000

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