Annual report pursuant to Section 13 and 15(d)

Orion Office REIT, Derivative and Hedging Activities - Narrative (Details)

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Orion Office REIT, Derivative and Hedging Activities - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Reclassification of previous unrealized loss on interest rate derivatives into net income $ (90,000) $ 0 $ 0
Amount to be reclassified in next twelve months 400,000    
Designated as Hedging Instrument      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Unrealized gain on derivatives 200,000    
Reclassification of previous unrealized loss on interest rate derivatives into net income (100,000) $ 0 $ 0
Interest Rate Swap | Designated as Hedging Instrument      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative, notional amount $ 175,000,000