Summary of Significant Accounting Policies - Principles of Consolidation and Basis of Presentation (Details) - shares	3 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Principles of Consolidation and Basis of Presentation
Partnership units, surrendered (in shares)	2,900,000
VEREIT Operating Partnership, L.P. [Member] | Common Stock [Member]
Principles of Consolidation and Basis of Presentation
Limited Partner OP Units outstanding (shares)	20,793,463	23,715,908
Limited partners', units issued (shares)	20,793,463	23,715,908
VEREIT Operating Partnership, L.P. [Member] | Preferred Stock [Member]
Principles of Consolidation and Basis of Presentation
Limited Partner OP Units outstanding (shares)	49,766	86,874
Limited partners', units issued (shares)	49,766	86,874