Investments in Partially Owned Entities (85 Tenth Avenue) (Details) - 85 Tenth Avenue - USD ($)	Sep. 24, 2024	Sep. 30, 2024
Schedule Of Equity Method Investments
Equity method ownership percentage		49.90%
JV \| Residential Building
Schedule Of Equity Method Investments
Equity method ownership percentage	49.90%
Mortgages Payable: \| Mortgage 85 Tenth Avenue \| JV
Schedule Of Equity Method Investments
Debt amount	$ 625,000,000
Mortgages Payable: \| 3.82% Senior Notes \| JV
Schedule Of Equity Method Investments
Debt amount	$ 396,000,000
Stated rate (in percent)	3.82%
Mortgages Payable: \| Mezzanine A Note \| JV
Schedule Of Equity Method Investments
Debt amount	$ 129,000,000
Stated rate (in percent)	5.20%
Non-default accrued interest rate waiver	50.00%
Mortgages Payable: \| Mezzanine B Note \| JV
Schedule Of Equity Method Investments
Debt amount	$ 100,000,000
Stated rate (in percent)	6.60%
Non-default accrued interest rate waiver	50.00%

Face (par) amount of debt instrument at time of issuance.

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