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Noncontrolling Interests - Narrative (Details) | Sep. 30, 2025 entity
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Noncontrolling Interest [Abstract] |
Number of noncontrolling interests consolidated | 11

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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