Noncontrolling Interests - Schedule of the Change in the Carrying Value of all Noncontrolling Interests (Details) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Jul. 31, 2024 USD ($) partnership shares	Sep. 30, 2024 USD ($) shares	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) shares	Sep. 30, 2023 USD ($)	Dec. 31, 2023 shares
Change in the carrying value of all noncontrolling interests
Carrying value at beginning of the period				$ 165,502
Allocation of net income		$ 1,639	$ 404	4,831	$ 3,248
Issuance of common partnership units		46,485		46,485
Carrying value at end of the period		$ 211,918		$ 211,918
Realty Income, L.P.
Change in the carrying value of all noncontrolling interests
Number of partnership units outstanding (in units) | shares	156,621	2,681,808		2,681,808		1,795,167
Number of consolidated property partnerships interests converted by joint venture partner | partnership	2
Non-controlling interests
Change in the carrying value of all noncontrolling interests
Carrying value at beginning of the period				$ 165,502
Contributions				1,770
Distributions				(7,438)
Allocation of net income				4,831
Issuance of common partnership units		$ 47,253		47,253
Carrying value at end of the period		211,918		211,918
Non-controlling interests | Realty Income, L.P.
Change in the carrying value of all noncontrolling interests
Carrying value at beginning of the period				114,072
Contributions				0
Distributions				(4,627)
Allocation of net income				4,287
Issuance of common partnership units				54,643
Carrying value at end of the period		168,375		168,375
Non-controlling interests | Other Noncontrolling Interests
Change in the carrying value of all noncontrolling interests
Carrying value at beginning of the period				51,430
Contributions				1,770
Distributions				(2,811)
Allocation of net income				544
Issuance of common partnership units				(7,390)
Carrying value at end of the period		43,543		43,543
Common stock and paid in capital
Change in the carrying value of all noncontrolling interests
Issuance of common partnership units		$ (768)		$ (768)
Common stock and paid in capital | Realty Income, L.P.
Change in the carrying value of all noncontrolling interests
Issuance of common partnership units	$ 800