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v3.21.2

Noncontrolling Interests - Narrative (Details) | 1 Months Ended | 12 Months Ended |
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May 31, 2021 joint_venture | Dec. 31, 2020 joint_venture | Jun. 30, 2021 noncontrolling_interest joint_venture
Noncontrolling interests |  |  |
Number of noncontrolling interests consolidated | noncontrolling_interest |  |  | 4
Number of development joint ventures |  |  | 2
Number of development joint ventures acquired | 1 | 1 |
Consolidated joint venture |  |  |
Noncontrolling interests |  |  |
Ownership interest (as a percent) |  |  | 68.00%

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- Definition Number Of Development Joint Ventures + References No definition available. + Details
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- Definition Number Of Development Joint Ventures Acquired + References No definition available. + Details
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Namespace Prefix: | o_
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Balance Type: | na
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- Definition Number Of Noncontrolling Interests Consolidated + References No definition available. + Details
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Namespace Prefix: | o_
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Balance Type: | na
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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. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |