PROPERTIES (Leased Property) (Narrative) (Detail) $ in Millions	Dec. 31, 2019 USD ($)	Dec. 31, 2019 facility	Dec. 31, 2019 property	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Real Estate Properties [Line Items]
Number of real estate properties		987
Capitalized interest | $	$ 13.9			$ 11.1	$ 8.0
Skill Nursing Facilities Leases [Member]
Real Estate Properties [Line Items]
Number of real estate properties		784	782
Assisted Living Facilities Leased [Member]
Real Estate Properties [Line Items]
Number of real estate properties		114	114
Specialty Facilities Leased [Member]
Real Estate Properties [Line Items]
Number of real estate properties		28	28
Medical Office Buildings Leased [Member]
Real Estate Properties [Line Items]
Number of real estate properties		2