Number of partnership units outstanding.

No definition available.

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- Definition

Partnership Units Redeemed

+ References

No definition available.

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended
	Feb. 21, 2019	Jan. 31, 2019	Jan. 03, 2019	Dec. 31, 2018	Dec. 31, 2017
Realty Income, L.P.
Subsequent events
Number of partnership units outstanding				373,797	88,182
Tau Operating Partnership
Subsequent events
Ownership interest (as a percent)				99.40%
Subsequent event
Subsequent events
Common stock, dividends declared (in dollars per share)	$ 0.2255	$ 0.2255
Subsequent event \| Realty Income, L.P.
Subsequent events
Number of partnership units outstanding			373,797
Subsequent event \| Tau Operating Partnership
Subsequent events
Number of partnership units redeemed		317,022
Ownership interest (as a percent)		100.00%
Subsequent event \| $70 million senior unsecured term loan \| Senior Unsecured Term Loans
Subsequent events
Repayments of long-term debt		$ 70.0