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

Quarterly report pursuant to Section 13 or 15(d)

Cover
- Cover
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Fair Value Measures - Narrative (Details)

v3.24.3

Fair Value Measures - Narrative (Details) $ in Millions	9 Months Ended
Fair Value Measures - Narrative (Details) $ in Millions	Sep. 30, 2024 USD ($) property	Sep. 30, 2023 USD ($) property	Dec. 31, 2023 USD ($)	Nov. 13, 2023 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of properties \| property	8	6
Impairment of property held-for-use	$ 22.1	$ 14.0
Impairment of properties disposed of	$ 3.3	4.6
Number of properties sold \| property	1
Impairment of properties held for sale	$ 0.0	$ 8.4
Estimated Sales Price Per Agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of properties \| property	7	5
Discount Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of properties \| property	1
Measurement input (percent)	0.090
Capitalization Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input (percent)	0.085
Estimated Sales Price Per Market Data
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of properties \| property		1
Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative notional amount	$ 60.0		$ 60.0
Interest rate collars \| Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative notional amount	60.0		$ 60.0	$ 60.0
Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	$ 0.0

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