Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Goodwill and Other Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill [Roll Forward]
Goodwill, beginning balance		$ 1,894,794	$ 92,789	$ 0
Measurement period adjustments			22,288
Goodwill allocated to dispositions / and held for sale assets		(98,765)	(210,139)
Impairment		(139,655)	(223,064)
Goodwill, ending balance	$ 1,894,794	1,656,374	1,894,794	92,789
CapLease [Member]
Goodwill [Roll Forward]
Acquisitions and mergers				92,789
Measurement period adjustments			27,300
Cole Merger [Member]
Goodwill [Roll Forward]
Acquisitions and mergers			2,212,920
Measurement period adjustments	49,627
REI segment [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance		1,509,396	92,789	0
Measurement period adjustments			(27,339)
Goodwill allocated to dispositions / and held for sale assets		(98,765)	(210,139)
Impairment		0	0
Goodwill, ending balance	1,509,396	1,410,631	1,509,396	92,789
REI segment [Member] \| CapLease [Member]
Goodwill [Roll Forward]
Acquisitions and mergers				92,789
REI segment [Member] \| Cole Merger [Member]
Goodwill [Roll Forward]
Acquisitions and mergers			1,654,085
Cole Capital Segment [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance		385,398	0	0
Measurement period adjustments			49,627
Goodwill allocated to dispositions / and held for sale assets		0	0
Impairment		(139,655)	(223,064)
Goodwill, ending balance	$ 385,398	$ 245,743	385,398	0
Cole Capital Segment [Member] \| CapLease [Member]
Goodwill [Roll Forward]
Acquisitions and mergers				$ 0
Cole Capital Segment [Member] \| Cole Merger [Member]
Goodwill [Roll Forward]
Acquisitions and mergers			$ 558,835