Orion Office REIT Inc. Quarterly report pursuant to Section 13 or 15(d)

VEREIT Office Assets, Real Estate Investments and Related Intangibles - Impairments (Details)	3 Months Ended	6 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) property	Jun. 30, 2021 USD ($) property
Real Estate Properties [Line Items]
Number of properties \| property		6
Provisions for impairment \| $		$ 9,360,000	$ 0
VEREIT Office Assets
Real Estate Properties [Line Items]
Number of properties \| property			2
Provisions for impairment \| $	$ 400,000		$ 21,600,000
VEREIT Office Assets \| Discount Rate \| Assets impaired during the ten months ended October 31, 2021 \| Weighted Average
Real Estate Properties [Line Items]
Alternative investment, measurement input	0.086		0.086
VEREIT Office Assets \| Capitalization Rate \| Assets impaired during the ten months ended October 31, 2021 \| Weighted Average
Real Estate Properties [Line Items]
Alternative investment, measurement input	0.081		0.081