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Other Investments (Schedule of Other Investments) (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Schedule of Equity Method Investments [Line Items] |  |  |  |
Other investments | [1] | $ 1,526,019 |  | $ 1,297,281
Earnings (losses) from equity method investments |  | 25,032 | $ 11,768 |
Interest expense |  | 29,243 | 28,809 |
Mark-to-market gain |  | $ 5,100 |  |
Safehold Inc. |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Number of shares owned (in shares) |  | 40.1 |  |
Closing price (in dollars per share) |  | $ 55.45 |  |
Market value |  | $ 2,200,000 |  |
Dilution gain |  | 900 | 500 |
Equity Method Investment, Nonconsolidated Investee or Group of Investees |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Other investments |  | 1,526,019 |  | 1,297,281
Earnings (losses) from equity method investments |  | 25,032 | 11,768 |
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Other strategic investments |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Other investments |  | 29,373 |  | 66,770
Earnings (losses) from equity method investments |  | 3,623 | 958 |
Real estate equity investments | Equity Method Investment, Nonconsolidated Investee or Group of Investees |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Carrying value |  | 1,496,646 |  | 1,230,511
Earnings (losses) from equity method investments |  | 21,409 | 10,810 |
Real estate equity investments | Equity Method Investment, Nonconsolidated Investee or Group of Investees | Safehold Inc. |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Carrying value |  | 1,388,657 |  | 1,168,532
Earnings (losses) from equity method investments |  | 17,029 | 11,412 |
Real estate equity investments | Equity Method Investment, Nonconsolidated Investee or Group of Investees | Ground Lease Plus Fund |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Carrying value |  | 64,548 |  | 17,630
Earnings (losses) from equity method investments |  | 769 |  |
Real estate equity investments | Equity Method Investment, Nonconsolidated Investee or Group of Investees | Other real estate equity investments |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Carrying value |  | 43,441 |  | $ 44,349
Earnings (losses) from equity method investments |  | $ 3,611 | $ (602) |
[1] | Refer to Note 2 for details on the Company’s consolidated variable interest entities (“VIEs”).

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