Noncontrolling Interests - Change in Carrying Value (Details) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($) property shares	Sep. 30, 2022 USD ($) shares	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) shares	Sep. 30, 2021 USD ($)	Dec. 31, 2021 shares
Change in the carrying value of all noncontrolling interests
Carrying value at beginning of the period				$ 76,826
Allocation of net income		$ 720	$ 280	1,937	$ 865
Carrying value at end of the period	$ 127,138	127,138		127,138
Issuance of common partnership units		$ 51,221		$ 51,221	2,106
Realty Income, L.P.
Change in the carrying value of all noncontrolling interests
Number of partnership units outstanding (in units) | shares	1,795,167	1,795,167		1,795,167		1,060,709
Number of partnership units issued (in units) | shares	734,458	734,458		734,458
Properties acquired | property	9
Noncontrolling interests
Change in the carrying value of all noncontrolling interests
Carrying value at beginning of the period				$ 76,826
Contributions				51,221
Distributions				(2,846)
Allocation of net income				1,937
Carrying value at end of the period	$ 127,138	$ 127,138		127,138
Issuance of common partnership units	51,200	51,221		51,221	$ 2,106
Noncontrolling interests | Realty Income, L.P.
Change in the carrying value of all noncontrolling interests
Carrying value at beginning of the period				62,416
Contributions				51,221
Distributions				(2,623)
Allocation of net income				1,784
Carrying value at end of the period	112,798	112,798		112,798
Noncontrolling interests | Other Noncontrolling Interests
Change in the carrying value of all noncontrolling interests
Carrying value at beginning of the period				14,410
Contributions				0
Distributions				(223)
Allocation of net income				153
Carrying value at end of the period	$ 14,340	$ 14,340		$ 14,340