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Investment Activity (Tenant Purchase and Sale Agreement) (Details) - Senior Living Campuses - Disposal Group, Held-for-sale, Not Discontinued Operations - 2025 Disposal Group - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Real Estate [Line Items] |  |  |  |
Purchase price | $ 39.0 |  | $ 39.0 |
Rental income | 0.6 | $ 0.7 | 2.0 | $ 2.1
Net real estate balance | $ 18.6 |  | $ 18.6 |

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