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Other Investments (Net Lease Venture II) (Details) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity interest | 51.90% | 51.90% |  |
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 |  |  |
Net Lease Venture II |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity interest | 51.90% | 51.90% |  |
Net Lease Venture II | Net income from discontinued operations |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Management fee revenue from related party |  | $ 1.7 | $ 1.5 | $ 1.5

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