Quarterly report pursuant to Section 13 or 15(d)

Organization (Details 2)

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Organization (Details 2) (Corporate Office Properties, L.P.)
9 Months Ended
Sep. 30, 2014
Common Units
 
Forms of ownership in Operating Partnership and ownership percentage by the entity  
Percentage ownership in operating partnership 95.80%
Preferred Units
 
Forms of ownership in Operating Partnership and ownership percentage by the entity  
Percentage ownership in operating partnership 95.50%