SEGMENT INFORMATION - Revenue and Net Real Estate Property (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2015 |
Jun. 30, 2014 |
Jun. 30, 2015 |
Jun. 30, 2014 |
Dec. 31, 2014 |
|
| Revenues: | |||||
| Total revenues | $ 891,322 | $ 751,254 | $ 1,775,346 | $ 1,492,724 | |
| Net real estate property: | |||||
| Total net real estate property | 21,365,096 | 21,365,096 | $ 18,985,559 | ||
| United States | |||||
| Revenues: | |||||
| Total revenues | 840,830 | 724,725 | 1,675,287 | 1,444,833 | |
| Net real estate property: | |||||
| Total net real estate property | 19,858,871 | 19,858,871 | 17,547,255 | ||
| Canada | |||||
| Revenues: | |||||
| Total revenues | 44,736 | 21,821 | 88,786 | 43,038 | |
| Net real estate property: | |||||
| Total net real estate property | 1,163,102 | 1,163,102 | 1,269,710 | ||
| United Kingdom | |||||
| Revenues: | |||||
| Total revenues | 5,756 | $ 4,708 | 11,273 | $ 4,853 | |
| Net real estate property: | |||||
| Total net real estate property | $ 343,123 | $ 343,123 | $ 168,594 | ||