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Supplemental Disclosures of Cash Flow Information - Schedule of Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands | 9 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024
Supplemental disclosures: |  |
Cash paid for interest | $ 810,632 | $ 732,123
Cash paid for income taxes | 67,050 | 29,818
Non-cash activities: |  |
Net decrease in fair value of derivatives | (88,060) | (44,050)
Realty Income, L.P. |  |
Non-cash activities: |  |
Issuance/conversion of common partnership units of Realty Income, L.P. | 0 | 47,253
Term loans assumed at fair value |  |
Non-cash activities: |  |
Term loans and notes payable assumed at fair value | 0 | 1,300,000
Notes payable assumed at fair value |  |
Non-cash activities: |  |
Term loans and notes payable assumed at fair value | $ 0 | $ 2,481,486

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