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v3.23.1

Noncontrolling Interests - Narrative (Details) | 1 Months Ended |
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May 31, 2021 joint_venture | Dec. 31, 2020 joint_venture | Mar. 31, 2023 joint_venture noncontrollingInterest
Noncontrolling Interest [Abstract] |  |  |
Number of noncontrolling interests consolidated | noncontrollingInterest |  |  | 4
Number of development joint ventures |  |  | 2
Number of development joint ventures acquired | 1 | 1 |

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- Definition Number Of Development Joint Ventures + References No definition available. + Details
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Namespace Prefix: | o_
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Balance Type: | na
Period Type: | instant

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- Definition Number Of Development Joint Ventures Acquired + References No definition available. + Details
Name: | o_NumberOfDevelopmentJointVenturesAcquired
Namespace Prefix: | o_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Number Of Noncontrolling Interests Consolidated + References No definition available. + Details
Name: | o_NumberOfNoncontrollingInterestsConsolidated
Namespace Prefix: | o_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_NoncontrollingInterestAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration