Organization (Details)	3 Months Ended			6 Months Ended
	Jun. 30, 2013 property		Jun. 30, 2012 property	Jun. 30, 2013 property		Jun. 30, 2012 property
Operations [Line Items]
Number of Properties Acquired	433	[1]	116	481	[1]	170
General Partner [Member] | ARC Properties Operating Partnership, L.P. [Member]
Operations [Line Items]
General partner ownership interest in OP, Percent				95.30%
Affiliated Entity [Member] | Contributor [Member] | ARC Real Estate Partners, LLC [Member]
Operations [Line Items]
Limited partner ownership interest in OP, Percent				4.30%
Unaffiliated Third Party [Member]
Operations [Line Items]
Limited partner ownership interest in OP, Percent				0.40%
GE Capital Portfolio [Member]
Operations [Line Items]
Number of Properties Acquired				447
Minimum [Member]
Operations [Line Items]
Real Estate Property, Weighted Average Remaining Lease Term	10 years			10 years
Maximum [Member]
Operations [Line Items]
Real Estate Property, Weighted Average Remaining Lease Term	12 years			12 years
Long Term [Member]
Operations [Line Items]
Real Estate Portfolio, Property Concentration, Percentage	70.00%			70.00%
Short Term [Member] [Member]
Operations [Line Items]
Real Estate Portfolio, Property Concentration, Percentage	30.00%			30.00%

[1] Excludes 47 properties comprised of $67.5 million of net investments subject to direct financing leases