Derivatives and Hedging Activities - Cash Flow Hedges of Interest Rate Risk (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Nov. 01, 2019	Feb. 06, 2019
Derivative [Line Items]
Reclassification of previous unrealized loss (gain) on interest rate derivatives into net (loss) income	$ 2,457,000	$ 313,000	$ (70,000)
Gain (loss) to be reclassified in next twelve months	8,300,000
Interest Rate Swap [Member]
Derivative [Line Items]
Notional amount	400,000,000.0				$ 900,000,000.0
VEREIT Operating Partnership, L.P. [Member]
Derivative [Line Items]
Reclassification of previous unrealized loss (gain) on interest rate derivatives into net (loss) income	$ 2,457,000	313,000	(70,000)
VEREIT Operating Partnership, L.P. [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Interest rate				3.59%
Line of Credit [Member] | VEREIT Operating Partnership, L.P. [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Basis spread on variable rate	1.10%
LIBOR [Member] | Line of Credit [Member] | VEREIT Operating Partnership, L.P. [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Basis spread on variable rate	25.00%
Cash Flow Hedging [Member]
Derivative [Line Items]
Amount of (loss) gain recognized in income on cash flow hedges	$ (29,900,000)	0	100,000
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Maximum length of time hedged in cash flow hedge	120 months
Reclassification of previous unrealized loss (gain) on interest rate derivatives into net (loss) income	$ 2,500,000	$ 300,000	200,000
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Loss reclassified from accumulated oci into income, effective portion			800,000
Public Debt [Member]
Derivative [Line Items]
Public debt term	10 years
Loans Payable [Member] | Line of Credit [Member]
Derivative [Line Items]
Gain (loss) reclassified from accumulated oci into income, effective portion, net			$ 1,100,000