Supplemental Disclosures of Cash Flow Information - Schedule of Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	9 Months Ended
	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