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Information by Business Segment - Narrative (Details) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2025 property | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($)
Segment financial information for real estate operations |  |  |
Number of properties reclassified between segments | property | 2 |  |
Unconsolidated real estate joint ventures owning operating properties | Defense/IT Portfolio | Data Center Shells |  |  |
Segment financial information for real estate operations |  |  |
Carrying values of investments in UJVs owning operating properties, net of deficit investment balances | $ |  | $ 13.8 | $ 36.4

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