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Merger with VEREIT, Inc. and Orion Office REIT Inc. Divestiture - Narrative (Details) |  |  | 2 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Nov. 01, 2021 USD ($) Rate | Jun. 16, 2021 lawsuit | Dec. 31, 2021 USD ($) | Jul. 23, 2021 lawsuit | Oct. 27, 2021 lawsuit | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Apr. 29, 2021 subsidiary
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Merger and integration-related costs |  |  |  |  |  | $ 167,413,000 | $ 0 | $ 0 |
VEREIT |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Agreement and Plan of Merger, newly formed subsidiaries | subsidiary |  |  |  |  |  |  |  |  | 2
Disclosure challenges, purported stockholders of VEREIT |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of lawsuits filed | lawsuit |  |  |  | 12 |  |  |  |  |
Number of complaints voluntarily dismissed | lawsuit |  |  |  |  | 12 |  |  |  |
Disclosure challenges, purported stockholders of Realty Income |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of lawsuits filed | lawsuit |  | 1 |  |  |  |  |  |  |
Number of complaints voluntarily dismissed | lawsuit |  |  |  |  | 1 |  |  |  |
VEREIT |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Conversion for common stock and common units per merger agreement | Rate | 70.50% |  |  |  |  |  |  |  |
Preliminary allocation to goodwill | $ 3,660,000,000 |  |  |  |  |  |  |  |
Goodwill expected to be deductible for tax purposes | $ 0 |  |  |  |  |  |  |  |
Merger and integration-related costs |  |  |  |  |  | $ 161,400,000 |  |  |
Revenues associated with VEREIT OP since merger closing date |  |  | $ 176,300,000 |  |  |  |  |  |
Net loss associated with VEREIT OP since merger closing date |  |  | $ 36,700,000 |  |  |  |  |  |

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