v2.4.0.6
Segment Reporting (Details) (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Segment Reporting        
Net income $ 156,821,000 $ 43,192,000 $ 214,430,000 $ 73,728,000
Interest expense, net 33,193,000 44,544,000 66,819,000 87,515,000
Loss on extinguishment of debt, net     1,179,000  
General and administrative expense 8,316,000 8,145,000 18,026,000 15,437,000
Equity in income of unconsolidated entities (2,073,000) (395,000) (4,248,000) (898,000)
Depreciation expense 64,875,000 60,836,000 127,436,000 120,059,000
Gain on sale of real estate assets     (95,329,000) (7,675,000)
Income from discontinued operations (1,152,000) (283,000) (2,870,000) (303,000)
Segment net operating income
        
Segment Reporting        
Net operating income 175,668,000 158,759,000 346,182,000 307,127,000
Reconciling items
        
Segment Reporting        
Indirect operating expenses, net of corporate income 8,617,000 7,701,000 16,653,000 14,729,000
Investments and investment management expense 1,499,000 1,341,000 2,945,000 2,532,000
Expensed development and other pursuit costs 901,000 1,353,000 1,141,000 2,003,000
Interest expense, net 33,193,000 44,544,000 66,819,000 87,515,000
Loss on extinguishment of debt, net     1,179,000  
General and administrative expense 8,316,000 8,145,000 18,026,000 15,437,000
Equity in income of unconsolidated entities (2,073,000) (395,000) (4,248,000) (898,000)
Depreciation expense 64,875,000 60,836,000 127,436,000 120,059,000
Gain on sale of real estate assets (95,329,000) (7,675,000) (95,329,000) (7,675,000)
Income from discontinued operations $ (1,152,000) $ (283,000) $ (2,870,000) $ (303,000)