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Other Investments (Net Lease Venture II) (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended
--- | --- | ---
Nov. 30, 2021 | Mar. 31, 2022
Schedule of Equity Method Investments [Line Items] |  |
Payments to acquire property | $ 33.3 |
Net Lease Venture II | Office laboratory property |  |
Schedule of Equity Method Investments [Line Items] |  |
Payments to acquire property | 0.6 |
Net Lease Venture II | Office laboratory property | Liabilities associated with real estate held for sale and classified as discontinued operations |  |
Schedule of Equity Method Investments [Line Items] |  |
Mortgage liability assumed | $ 44.4 |
Safehold Inc. | Net Lease Venture II | Office laboratory property |  |
Schedule of Equity Method Investments [Line Items] |  |
Payment to terminate a real estate purchase option |  | $ 0.3

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