Noncontrolling Interests - Change in Carrying Value (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Change in the carrying value of all noncontrolling interests
Carrying value at beginning of the period	$ 165,502
Allocation of net income	1,615	$ 1,106
Carrying value at end of the period	$ 165,063
Realty Income, L.P.
Change in the carrying value of all noncontrolling interests
Number of partnership units outstanding (in units)	1,795,167		1,795,167
Non-controlling interests
Change in the carrying value of all noncontrolling interests
Carrying value at beginning of the period	$ 165,502
Contributions	214
Distributions	(2,268)
Allocation of net income	1,615
Carrying value at end of the period	165,063
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	(1,423)
Allocation of net income	1,402
Carrying value at end of the period	114,051
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	214
Distributions	(845)
Allocation of net income	213
Carrying value at end of the period	$ 51,012