Real Property Acquisitions and Development (Details 1) - USD ($)		9 Months Ended
		Sep. 30, 2015		Sep. 30, 2014
Triple Net [Member]
Estimated Fair Value of Allocated Purchase Price of Asset and Liabilities
Land and land improvements		$ 111,674,000	[1]	$ 36,427,000
Buildings and improvements		1,025,232,000	[1]	303,273,000
Acquired lease intangibles		3,888,000	[1]	0
Restricted cash		6,000	[1]	0
Receivables and other assets		60,000	[1]	0
Total assets acquired		1,140,860,000	[1]	339,700,000
Accrued expenses and other liabilities		(2,447,000)	[1]	0
Total liabilities assumed		(2,447,000)	[1]	0
Non-cash acquisition related activity		(2,780,000)	[1]	(1,937,000)
Cash disbursed for acquisitions		1,135,633,000	[1]	337,763,000
Construction in progress additions		96,403,000	[1]	79,668,000
Less: Capitalized Interest		(4,453,000)	[1]	(3,258,000)
Less: Foreign currency translation		73,000	[1]	116,000
Cash disbursed for construction in progress		92,023,000	[1]	76,526,000
Capital improvements to existing properties		35,042,000	[1]	14,375,000
Total cash invested in real property		1,262,698,000	[1]	428,664,000
Triple Net [Member] | Preliminary [Member]
Estimated Fair Value of Allocated Purchase Price of Asset and Liabilities
Total cash invested in real property		688,288,000
Senior housing - operating [Member]
Estimated Fair Value of Allocated Purchase Price of Asset and Liabilities
Land and land improvements		98,444,000	[2]	40,764,000
Buildings and improvements		1,229,017,000	[2]	224,936,000
Acquired lease intangibles		74,091,000	[2]	10,021,000
Acquired Construction in Progress		0	[2]	27,957,000
Restricted cash		5,567,000	[2]	0
Receivables and other assets		23,928,000	[2]	5,679,000
Total assets acquired	[3]	1,431,047,000	[2]	309,357,000
Secured debt		(234,597,000)	[2]	(12,846,000)
Accrued expenses and other liabilities		(19,016,000)	[2]	(17,011,000)
Total liabilities assumed		(253,613,000)	[2]	(29,857,000)
Noncontrolling interests		(86,842,000)	[2]	0
Non-cash acquisition related activity		0	[2]	0
Cash disbursed for acquisitions		1,090,592,000	[2]	279,500,000
Construction in progress additions		39,493,000	[2]	6,984,000
Less: Capitalized Interest		(1,116,000)	[2]	(293,000)
Less: Foreign currency translation		(1,345,000)	[2]	(810,000)
Cash disbursed for construction in progress		37,032,000	[2]	5,881,000
Capital improvements to existing properties		61,911,000	[2]	52,177,000
Total cash invested in real property		1,189,535,000	[2]	337,558,000
Cash Acquired from Acquisition		3,390,000		8,476,000
Senior housing - operating [Member] | Preliminary [Member]
Estimated Fair Value of Allocated Purchase Price of Asset and Liabilities
Total cash invested in real property		1,344,831,000
Outpatient Medical [Member]
Estimated Fair Value of Allocated Purchase Price of Asset and Liabilities
Land and land improvements	[4]	737,000		29,588,000
Buildings and improvements	[4]	426,288,000		471,410,000
Acquired lease intangibles	[4]	19,373,000		17,440,000
Receivables and other assets		0	[4]	1,245,000
Total assets acquired	[4],[5]	446,398,000		519,683,000
Secured debt		(112,000,000)	[4]	(50,500,000)
Accrued expenses and other liabilities		(2,743,000)	[4]	(9,308,000)
Total liabilities assumed		(114,743,000)	[4]	(59,808,000)
Noncontrolling interests		(68,535,000)	[4]	(39,987,000)
Non-cash acquisition related activity	[6]	0	[4]	(45,836,000)
Cash disbursed for acquisitions		263,120,000	[4]	374,052,000
Construction in progress additions		38,919,000	[4]	71,245,000
Less: Capitalized Interest		(742,000)	[4]	(1,533,000)
Less: Accruals	[7]	(1,921,000)	[4]	(11,290,000)
Cash disbursed for construction in progress		36,256,000	[4]	58,422,000
Capital improvements to existing properties		25,687,000	[4]	19,772,000
Total cash invested in real property		325,063,000	[4]	452,246,000
Cash Acquired from Acquisition		4,372,000		$ 0
Outpatient Medical [Member] | Preliminary [Member]
Estimated Fair Value of Allocated Purchase Price of Asset and Liabilities
Total cash invested in real property		$ 440,220,000

[1] (1) Includes acquisitions with an aggregate purchase price of $844,298,000 for which the allocation of the purchase price consideration is preliminary and subject to change.

[2] (1) Includes acquisitions with an aggregate purchase price of $1,268,031,000 for which the allocation of the purchase price consideration is preliminary and subject to change.

[3] (2) Excludes $3,390,000 and $8,476,000 of cash acquired during the nine months ended September 30, 2015 and 2014, respectively.

[4] (1) Includes acquisitions with an aggregate purchase price of $440,220,000 for which the allocation of the purchase price consideration is preliminary and subject to change.

[5] (2) Excludes $4,372,000 and $0 of cash acquired during the nine months ended September 30, 2015 and 2014, respectively.

[6] (3) Relates to an acquisition of assets previously financed as real estate loans. Please refer to Note 6 for additional information.

[7] (4) Represents non-cash consideration accruals for amounts to be paid in future periods relating to properties that converted in the periods noted above.