Orion Office REIT Inc. Annual report pursuant to Section 13 and 15(d)

VEREIT Office Assets, Real Estate Investments and Related Intangibles - Impairments (Details) $ in Thousands	10 Months Ended	12 Months Ended
	Oct. 31, 2021 USD ($) property	Dec. 31, 2023 USD ($) property	Dec. 31, 2022 USD ($) property	Dec. 31, 2021 USD ($) property
Real Estate Properties [Line Items]
Number of properties \| property		8	18	10
Provisions for impairment \| $		$ 33,112	$ 66,359	$ 49,859
VEREIT Office Assets
Real Estate Properties [Line Items]
Number of properties \| property	4
Provisions for impairment \| $	$ 28,064
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	0.090
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	0.085