Real Estate Investments (Detail) (USD $)	3 Months Ended				6 Months Ended				36 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013		Dec. 31, 2013		Jun. 27, 2013 Property	Sep. 30, 2013
Business Acquisition [Line Items]
Acquisition related	$ 7,201,000	[1],[2]	$ 37,266,000	[1],[2]	$ 20,618,000	[1],[2]	$ 47,593,000	[1],[2]
Merger and other transaction related	7,422,000	[1],[3],[4]	5,865,000	[1],[3],[4]	167,720,000	[1],[3],[5]	129,433,000	[1],[3],[5]
Future Minimum Operating Lease Base Rent Payments
Future Minimum Payments, July 1, 2014 - December 31, 2014	677,188,000				677,188,000
Future Minimum Payments, 2015	1,214,297,000				1,214,297,000
Future Minimum Payments, 2016	1,191,214,000				1,191,214,000
Future Minimum Payments, 2017	1,142,109,000				1,142,109,000
Future Minimum Payments, 2018	1,087,444,000				1,087,444,000
Future Minimum Payments, Thereafter	7,706,549,000				7,706,549,000
Future Minimum Payments, Total	13,018,801,000				13,018,801,000
Future Minimum Direct Financing Lease Payments
Future Minimum Direct Financing Lease Payments, July 1, 2014 - December 31, 2014	2,485,000	[6]			2,485,000	[6]
Future Minimum Direct Financing Lease Payments, 2015	4,757,000	[6]			4,757,000	[6]
Future Minimum Direct Financing Lease Payments, 2016	4,674,000	[6]			4,674,000	[6]
Future Minimum Direct Financing Lease Payments, 2017	4,273,000	[6]			4,273,000	[6]
Future Minimum Direct Financing Lease Payments, 2018	3,183,000	[6]			3,183,000	[6]
Future Minimum Direct Financing Lease Payments, Thereafter	10,052,000	[6]			10,052,000	[6]
Future Minimum Direct Financing Lease Payments, Total	29,424,000	[6]			29,424,000	[6]
Future minimum lease payments receivable	29,685,000				29,685,000				33,729,000
Unguaranteed residual value of property	43,884,000				43,884,000				46,172,000
Unearned income	(11,475,000)				(11,475,000)				(13,789,000)
Investment in direct financing leases, net	62,094,000	[1]	76,410,000		62,094,000	[1]	76,410,000		66,112,000	[1]
Land and construction in progress	62,594,000	[1]			62,594,000	[1]			21,839,000	[1]
2014 Acquisitions [Member]
Business Acquisition [Line Items]
Number of land parcels acquired					18
Number of properties acquired	122		899		337		1,011
Land	109,075,000		416,887,000		239,663,000		493,029,000
Buildings, fixtures and improvements	482,074,000		1,129,906,000		1,185,641,000		1,424,900,000
Total tangible assets	591,149,000		1,546,793,000		1,425,304,000		1,917,929,000
In-place leases	30,801,000		165,576,000		128,581,000		211,748,000
Above-market leases	5,511,000		0		21,145,000		0
Below-market leases	(1,869,000)		0		(3,321,000)		0
Fair value adjustment of assumed notes payable	0		0		(23,589,000)		0
Total purchase price of assets acquired, net	625,592,000		1,712,369,000		1,548,120,000		2,129,677,000
Notes payable assumed	0		0		(301,532,000)		0
Cash paid for acquired real estate investments	625,592,000		1,712,369,000		1,246,588,000		2,129,677,000
Future Minimum Direct Financing Lease Payments
Estimated cost to complete construction					15,300,000
Land	8,200,000				8,200,000
Acquisitions, 2014, Cole Merger and American Realty Capital Trust IV [Member]
Business Acquisition [Line Items]
Acquisition related					20,600,000		47,600,000
Merger and other transaction related					167,700,000		129,400,000
Pro forma revenues					828,299,000		155,269,000
Pro forma net income (loss) attributable to stockholders					(64,362,000)		2,023,000
Acquisitions, 2014, Excluding Cole Merger, ARCT IV Merger And CCPT Merger [Member]
Business Acquisition [Line Items]
Number of land parcels acquired					18
Business combination, consideration transferred					1,500,000,000
Number of properties acquired					337
GE Capital Portfolio [Member]
Future Minimum Direct Financing Lease Payments
Capital Leased Assets, Number of Units											47
Geographic Concentration Risk [Member] | Lease Revenue [Member] | Texas
Future Minimum Direct Financing Lease Payments
Concentration risk, percentage					12.90%
Columbia, South Carolina [Member]
Future Minimum Direct Financing Lease Payments
Estimated cost to complete construction					1,700,000
Number of square feet	450,000				450,000
Investment amount, total					22,000,000
Land and construction in progress	20,400,000				20,400,000
Interest costs capitalized					37,000
The Woodlands, Texas [Member]
Future Minimum Direct Financing Lease Payments
Estimated cost to complete construction					14,000,000
Number of square feet	150,000				150,000
Investment amount, total					34,000,000
Land and construction in progress	20,000,000				20,000,000
Interest costs capitalized					68,000
Proceeds from senior corporate credit facility					$ 17,000,000
Equity contributions percentage									90.00%
Cost overruns percentage split					50.00%
Percentage of square footage leased												95.00%
The Woodlands, Texas [Member] | Developer Partner [Member]
Future Minimum Direct Financing Lease Payments
Equity contributions percentage									10.00%

[1] For discussion on the restatement adjustments, see Note 2 - Restatement of Previously Issued Financial Statements.

[2] Includes $113,000 and $19.9 million to affiliates for the three months ended June 30, 2014 and 2013, respectively, and $1.7 million and $26.8 million to affiliates for the six months ended June 30, 2014 and 2013, respectively.

[3] Includes $40,000 and $255,000 to affiliates for the three months ended June 30, 2014 and 2013, respectively, and $137.8 million and $107.0 million to affiliates for the six months ended June 30, 2014 and 2013, respectively.

[4] This line item caption has been updated to "merger and other non-routine transactions" in the accompanying consolidated statements of operations.

[5] This line item caption has been updated to merger and other non-routine transactions in the accompanying consolidated statements of operations.

[6] 47 properties are subject to direct financing leases and, therefore, revenue is recognized as direct financing lease income on the discounted cash flows of the lease payments. Amounts reflected are the cash rent on these respective properties.