Derivatives and Hedging Activities - Cash Flow Hedges of Interest Rate Risk (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Jan. 24, 2019	Dec. 31, 2018
Derivative [Line Items]
Gain (loss) to be reclassified in next twelve months	$ 1.3
Interest Rate Swap [Member]
Derivative [Line Items]
Notional amount			$ 900.0
Derivative				$ 0.0
Line of Credit [Member] | Loans Payable [Member] | VEREIT Operating Partnership, L.P. [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Interest rate			3.84%
Deferred Rent, Derivative Liabilities and Other Liabilities [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Derivative liabilities	(11.3)
LIBOR [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Basis spread on variable rate			1.35%
Cash Flow Hedging [Member]
Derivative [Line Items]
Amount of (loss) gain recognized in income on cash flow hedges	(11.3)
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Reclassification of previous unrealized loss on interest rate derivatives into net income	$ 0.1	$ 0.1