SEGMENT INFORMATION (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Capital expenditures
Payments to acquire productive assets	$ 1,127,177	$ 221,948
Triple-Net Leased Properties
Capital expenditures
Payments to acquire productive assets	457,018	192,052
Senior Living Operations
Capital expenditures
Payments to acquire productive assets	282,432	16,863
MOB Operations
Capital expenditures
Payments to acquire productive assets	$ 387,727	$ 13,033