Business (Details)	Sep. 30, 2016 properties
Business [Line Items]
Number of properties in diversified portfolio	1,399	[1]
Controlling [Member]
Business [Line Items]
Number of properties in diversified portfolio	1,464

[1] (1) Genesis Healthcare is in our triple-net segment. Sunrise Senior Living and Revera are in our seniors housing operating segment. Benchmark Senior Living and Brookdale Senior Living are in both our triple-net and seniors housing operating segments.