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Number of partnership units issued.

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Number of partnership units outstanding.

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The cash outflow or inflow increase (decrease) in distribution due to real estate partnership based upon payments and accruals.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).

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Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).

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Amount of Net Income (Loss) attributable to noncontrolling interest.

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Value of stock issued pursuant to acquisitions during the period.

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Noncontrolling Interests - Change in Carrying Value (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 28, 2019	Dec. 31, 2018	Apr. 30, 2018	Mar. 30, 2018	Jun. 27, 2013	Jan. 22, 2013
Change in the carrying value of all noncontrolling interests
Carrying value at beginning of the period	$ 32,236
Redemptions	(20,225)	$ 0
Allocation of net income	288	$ 152
Carrying value at end of the period	$ 25,181
Tau Operating Partnership
Change in the carrying value of all noncontrolling interests
Number of partnership units issued								317,022
Number of partnership units outstanding	0			317,022
Realty Income, L.P.
Change in the carrying value of all noncontrolling interests
Number of partnership units issued	89,322	242,007	89,322		131,790	242,007	534,546
Number of partnership units outstanding	463,119			373,797
Noncontrolling interests
Change in the carrying value of all noncontrolling interests
Carrying value at beginning of the period	$ 32,236
Redemptions	(13,356)	$ (1,468)
Shares issued in conjunction with acquisition	6,286
Distributions	(273)
Allocation of net income	288
Carrying value at end of the period	25,181
Noncontrolling interests \| Tau Operating Partnership
Change in the carrying value of all noncontrolling interests
Carrying value at beginning of the period	13,356
Redemptions	(13,356)
Shares issued in conjunction with acquisition	0
Distributions	0
Allocation of net income	0
Carrying value at end of the period	0
Noncontrolling interests \| Realty Income, L.P.
Change in the carrying value of all noncontrolling interests
Carrying value at beginning of the period	17,912
Redemptions	0
Shares issued in conjunction with acquisition	6,286
Distributions	(273)
Allocation of net income	284
Carrying value at end of the period	24,209
Noncontrolling interests \| Other Noncontrolling Interests
Change in the carrying value of all noncontrolling interests
Carrying value at beginning of the period	968
Redemptions	0
Shares issued in conjunction with acquisition	0
Distributions	0
Allocation of net income	4
Carrying value at end of the period	$ 972