Concentration of Credit Risk (Minimum Rents) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Future contracted minimum rentals leases
2014	$ 1,233,735
2015	1,158,768
2016	1,108,769
2017	1,050,588
2018	979,174
Thereafter	5,152,498
Total	10,683,532
BROOKDALE SENIOR LIVING
Future contracted minimum rentals leases
2014	153,861
2015	137,037
2016	135,267
2017	135,267
2018	135,267
Thereafter	164,725
Total	861,424
KINDRED
Future contracted minimum rentals leases
2014	208,883
2015	176,484
2016	178,383
2017	180,331
2018	146,025
Thereafter	616,588
Total	1,506,694
Other
Future contracted minimum rentals leases
2014	870,991
2015	845,247
2016	795,119
2017	734,990
2018	697,882
Thereafter	4,371,185
Total	$ 8,315,414