| Orion Office REIT, Debt, Net - CMBS Loan (Details) $ in Millions | Feb. 10, 2022  USD ($)  property | Dec. 31, 2022  USD ($) | 
|---|---|---|
| Unconsolidated Joint Venture | ||
| Debt Instrument [Line Items] | ||
| Consolidated debt outstanding | $ 136.7 | |
| CMBS Loan | ||
| Debt Instrument [Line Items] | ||
| Number properties used to secure debt | property | 19 | |
| Debt Instrument, Interest Rate, Stated Percentage | 4.971% | |
| Loan reserves, amount funded | $ 35.5 | |
| Prepayment lockout period | 2 years | |
| Covenant, net worth requirement, minimum | $ 355.0 | |
| Covenant, liquid asset requirement, minimum | 10.0 | |
| CMBS Loan | CMBS Loan | ||
| Debt Instrument [Line Items] | ||
| Debt instrument, face amount | $ 355.0 | 
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- Definition Debt Instrument, Covenant, Net Worth Requirement, Minimum No definition available. 
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- Definition Debt Instrument, Prepayment Lockout Period No definition available. 
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- Definition Loan Reserves, Amount Funded No definition available. 
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- Definition Number Of Real Estate Properties Used To Secure Debt No definition available. 
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Face (par) amount of debt instrument at time of issuance. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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