Noncontrolling Interests - Change in Carrying Value (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Change in the carrying value of all noncontrolling interests
Carrying value at beginning of the period	$ 130,140
Allocation of net income	1,106	$ 602
Carrying value at end of the period	128,232
Non-cash reduction of noncontrolling interest	1,500
Realty Income, L.P.
Change in the carrying value of all noncontrolling interests
Number of partnership units outstanding (in units)			1,795,167
Noncontrolling interests
Change in the carrying value of all noncontrolling interests
Carrying value at beginning of the period	130,140
Distributions (2)	(3,014)
Allocation of net income	1,106
Carrying value at end of the period	128,232
Noncontrolling interests | Realty Income, L.P.
Change in the carrying value of all noncontrolling interests
Carrying value at beginning of the period	115,801
Distributions (2)	(1,411)
Allocation of net income	973
Carrying value at end of the period	115,363
Noncontrolling interests | Other Noncontrolling Interests
Change in the carrying value of all noncontrolling interests
Carrying value at beginning of the period	14,339
Distributions (2)	(1,603)
Allocation of net income	133
Carrying value at end of the period	$ 12,869