Noncontrolling Interests (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		11 Months Ended	12 Months Ended	0 Months Ended	3 Months Ended	12 Months Ended	0 Months Ended	3 Months Ended	6 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Jan. 22, 2013 Tau Operating Partnership, L.P.	Mar. 31, 2014 Tau Operating Partnership, L.P.	Dec. 31, 2013 Tau Operating Partnership, L.P.	Jun. 27, 2013 Realty Income, L.P.	Mar. 31, 2014 Realty Income, L.P.	Dec. 31, 2013 Realty Income, L.P.
Noncontrolling interests
Third party partnership units, ownership interest (as a percent)									2.20%
Realty Income partnership units, ownership interest (as a percent)						99.30%			97.80%
Conversion ratio	1
Change in the carrying value of all noncontrolling interests
Fair value of units issued at beginning of the period				$ 36,563	$ 13,962			$ 22,601
Reallocation of equity	(6,647)								(6,647)
Distributions	(466)		(1,371)			(173)	(691)		(293)	(680)
Allocation of net income	332	9	719			(53)	(218)		(279)	(501)
Carrying value at end of the period	29,130		35,911	35,911		13,369	13,489		15,761	22,422
Units held by third party					317,022	317,022		534,546	534,546
Payment rate per annum (as a percent)					2.00%
Carrying value of preferred units	$ 6,750		$ 6,750	$ 6,750