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
	Mar. 31, 2022 USD ($) property	Mar. 31, 2021 USD ($) property
Real Estate Properties [Line Items]
Number of properties \| property	2
Provisions for impairment \| $	$ 1,602,000	$ 0
VEREIT Office Assets
Real Estate Properties [Line Items]
Number of properties \| property		1
Provisions for impairment \| $		$ 21,200,000
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
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