Organization (Details 2) |
6 Months Ended |
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Jun. 30, 2019 | |
| Corporate Office Properties, L.P. | Common Units | |
| Forms of ownership in Operating Partnership and ownership percentage by the entity | |
| Percentage ownership in operating partnership | 98.60% |
| X | ||||||||||
- Definition Line items related to the percentage of classes of ownership in a subsidiary that are owned by the parent. No definition available.
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| X | ||||||||||
- Definition Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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