Business (Details)	Sep. 30, 2013 Number properties
Business [Line Items]
Number of properties in diversified portfolio	1,140	[1],[2]
Number of states in diversified portfolio	46
Controlling [Member]
Business [Line Items]
Number of properties in diversified portfolio	1,197

[1] Excludes our share of investments in unconsolidated entities. Please see Note 7 for additional information.

[2] Genesis is in our seniors housing triple-net segment. Sunrise, Revera, and Belmont Village are in our seniors housing operating segment. Benchmark is in both our seniors housing triple-net and seniors housing operating segments.