PROPERTIES AND INVESTMENTS - Leased Property (Narrative) (Detail)	3 Months Ended
	Mar. 31, 2017 Facility Healthcare_facility
Real Estate Properties [Line Items]
Number of real estate properties | Healthcare_facility	985
Property available for operating lease | Minimum
Real Estate Properties [Line Items]
Lease term	5 years
Increase in the specific annual percentage over the prior year's rent	2.00%
Property available for operating lease | Maximum
Real Estate Properties [Line Items]
Lease term	15 years
Increase in the specific annual percentage over the prior year's rent	3.00%
SNF's
Real Estate Properties [Line Items]
Number of real estate properties	808
ALFs
Real Estate Properties [Line Items]
Number of real estate properties	101
Specialty facilities
Real Estate Properties [Line Items]
Number of real estate properties	16
Medical office building
Real Estate Properties [Line Items]
Number of real estate properties	1