Dispositions, Assets Held for Sale and Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Real property dispositions:
Total dispositions	$ 0	$ 120,420
Net loss (gain) on sales of properties	0	56,845
Proceeds from sales of real property	0	177,265
Triple Net [Member]
Real property dispositions:
Total dispositions	0	110,998
Outpatient Medical [Member]
Real property dispositions:
Total dispositions	$ 0	$ 9,422

The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

Name:	us-gaap_GainLossOnSaleOfProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration