v2.4.0.6
Concentration of Credit Risk (Details 2) (USD $)
 1 Months Ended 12 Months Ended
Nov. 30, 2011
bundle
asset
Apr. 30, 2012
Dec. 31, 2011
notice
property
lease
asset
bundle
renewal
Future contracted minimum rentals leases      
2012     $ 1,019,968,000
2013     925,558,000
2014     864,252,000
2015     738,226,000
2016     640,745,000
Thereafter     3,409,149,000
Total     7,597,898,000
Brookdale Senior Living
      
Future contracted minimum rentals leases      
2012     161,203,000
2013     160,018,000
2014     149,316,000
2015     138,514,000
2016     136,846,000
Thereafter     439,387,000
Total     1,185,284,000
KINDRED
      
Future contracted minimum rentals leases      
2012     260,530,000
2013     181,126,000
2014     142,730,000
2015     48,785,000
2016     1,009,000
Total     634,180,000
Number of renewals during lease term     3
Term of lease renewal (in years)     5 years
Number of bundles set to expire     10
Number of triple-net lease properties set to expire under terms of lease     89
Minimum number of renewal notices needed on bundles set to expire in following year in order to extend lease term     1
Minimum number of properties in each bundle     6
Minimum number of hospitals in each bundle     1
Amount of annual base rent of triple-net lease properties set to expire under terms of lease   99,000,000  
Minimum period to reposition triple-net lease properties with new operators if a renewal notice on is not received (in years)     1 year
Number of Early Renewal Assets 16    
Number of Early Renewal Bundles 2    
Current aggregate annual base rent for the Early Renewal Assets 23,000,000    
Number of Remaining 2013 Renewal Assets     73
Number of Remaining 2013 Renewal Bundles     8
Number of remaining reset bundles 4    
Number of Remaining Reset Assets 37    
Current aggregate annual base rent for the Remaining Reset Assets 43,000,000    
Number of sequential renewal options     2
Number of properties excluding Renewal Assets, set to expire under terms of lease     108
Number of leases     197
KINDRED | Minimum
      
Future contracted minimum rentals leases      
Term of lease (in years)     10 years
KINDRED | Maximum
      
Future contracted minimum rentals leases      
Term of lease (in years)     15 years
SUNRISE
      
Future contracted minimum rentals leases      
Term of agreement (in years)     30 years
SUNRISE | Minimum
      
Future contracted minimum rentals leases      
Percentage of revenues charged for managing real estate properties     3.75%
SUNRISE | 2012 Plan
      
Future contracted minimum rentals leases      
Percentage of revenues charged for managing real estate properties     6.00%
SUNRISE | 2012 Plan | Minimum
      
Future contracted minimum rentals leases      
Percentage of revenues charged for managing real estate properties     5.00%
SUNRISE | 2012 Plan | Maximum
      
Future contracted minimum rentals leases      
Percentage of revenues charged for managing real estate properties     7.00%
ATRIA
      
Future contracted minimum rentals leases      
Term of agreement (in years)     10 years
Successive automatic renewal period (in years)     10 years
Other
      
Future contracted minimum rentals leases      
2012     598,235,000
2013     584,414,000
2014     572,206,000
2015     550,927,000
2016     502,890,000
Thereafter     2,969,762,000
Total     $ 5,778,434,000
Long-term accute care hospital assets
      
Future contracted minimum rentals leases      
Number of Early Renewal Assets 3    
Seniors housing communities
      
Future contracted minimum rentals leases      
Number of seniors housing communities under long-term management agreements     197