Summary of Significant Accounting Policies - Principles of Consolidation and Basis of Presentation (Details) - VEREIT Operating Partnership, L.P. [Member] - shares	Dec. 31, 2020	Dec. 31, 2019
Common Stock [Member]
Principles of Consolidation and Basis of Presentation
Limited partners', units issued (shares)	152,033	157,343
Limited partners', units outstanding (shares)	152,033	157,343
Preferred Stock [Member]
Principles of Consolidation and Basis of Presentation
Limited partners', units issued (shares)	49,766	49,766
Limited partners', units outstanding (shares)	49,766	49,766
Limited Partner [Member] | Common Stock [Member]
Principles of Consolidation and Basis of Presentation
Limited partners', units issued (shares)	200,000	200,000
Limited partners', units outstanding (shares)	200,000	200,000