Subsequent Events (Details) (USD $)	12 Months Ended						0 Months Ended	2 Months Ended			0 Months Ended
	Dec. 31, 2013 property sqft		Dec. 31, 2012 property	Feb. 26, 2014 property sqft		Dec. 31, 2013 Vacant [Member] property	Jan. 08, 2014 Subsequent Event [Member]	Feb. 26, 2014 Property Acquisition [Member] sqft property		Feb. 26, 2014 Cole Merger [Member] property	Jan. 08, 2014 Former Manager [Member] Subsequent Event [Member]
Subsequent Event [Line Items]
Number of Real Estate Properties	1,329	[1]		3,771	[1]
Number of properties acquired	569		524					1,390		1,052
Square feet of property	34,185,054	[1]		102,796,053	[1]
Square feet of acquired property								22,194,026		46,416,973
Real Estate Investment, Aggregate Purchase Price	$ 5,162,688,000	[1],[2]
Real Estate Investment Property, at Cost, Acquisitions								2,999,222,000	[2]
Number Of Real Estate Properties, Held for Sale	1		2			1
Payment Received for Management Services											10,000,000
Transition Services Agreement Term	60 days
Payments to Acquire Property, Plant, and Equipment							$ 10,000,000

[1] Total portfolio excludes one vacant property contributed in September 2011, which was classified as held for sale as of December 31, 2013.

[2] Contract purchase price, excluding acquisition and transaction related costs.