Fair Value Measurements (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Fair Value of Financial Instruments
Marketable securities available-for-sale	$ 12,039	$ 24,146
Interest rate cap and swap agreements (included in Other assets)	59,285	1,896
Interest rate cap and swap agreements (included in Other liabilities)	3,592	29,912
Debt and preferred equity investments	663,985	1,088,723
Carrying Value
Fair Value of Financial Instruments
Debt and preferred equity investments	663,985	1,088,723
Fixed rate debt	4,497,238	3,274,324
Variable rate debt	1,140,148	801,051
Total	5,637,386	4,075,375
Fair Value
Fair Value of Financial Instruments
Total	5,417,519	4,137,135
Estimated fair value of debt and preferred equity investments, low end of range	600,000	1,000,000
Estimated fair value of debt and preferred equity investments, high end of range	700,000	1,100,000
Level 1
Fair Value of Financial Instruments
Marketable securities available-for-sale	0	0
Interest rate cap and swap agreements (included in Other assets)	0	0
Interest rate cap and swap agreements (included in Other liabilities)	0	0
Level 2
Fair Value of Financial Instruments
Marketable securities available-for-sale	12,039	24,146
Interest rate cap and swap agreements (included in Other assets)	59,285	1,896
Interest rate cap and swap agreements (included in Other liabilities)	3,592	29,912
Level 3
Fair Value of Financial Instruments
Marketable securities available-for-sale	0	0
Interest rate cap and swap agreements (included in Other assets)	0	0
Interest rate cap and swap agreements (included in Other liabilities)	0	0
Level 3 \| Fair Value
Fair Value of Financial Instruments
Fixed rate debt	4,284,029	3,336,463
Variable rate debt	$ 1,133,490	$ 800,672

Represents the high end of the range of estimated fair value for investments in mortgage loans on real estate.

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- Definition

Represents the low end of the range of estimated fair value for investments in mortgage loans on real estate.

+ References

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- Definition

Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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-Publisher FASB
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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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The portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

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The portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time.

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The balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio.

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