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Condensed Consolidated Statements Of Equity And Perpetual Preferred Units (USD $) | Total | Common Shares Of Beneficial Interest | Additional Paid-In Capital | Distributions In Excess Of Net Income | Treasury Shares, At Cost | Accumulated Other Comprehensive Income (Loss) | Noncontrolling Interests | Perpetual Preferred Units
--- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2010 | $ 1,757,373,000 | $ 824,000 | $ 2,775,625,000 | $ (595,317,000) | $ (461,255,000) | $ (33,458,000) | $ 70,954,000 |
Perpetual Preferred Units, Beginning Balance at Dec. 31, 2010 |  |  |  |  |  |  |  | 97,925,000
Net income | 4,647,000 |  |  | 2,529,000 |  |  | 2,118,000 | 5,250,000
Other comprehensive income | 33,659,000 |  |  |  |  | 33,659,000 |  |
Common shares issued | 69,863,000 | 11,000 | 69,852,000 |  |  |  |  |
Net share awards | 10,304,000 | 4,000 | 9,597,000 |  | 703,000 |  |  |
Employee stock purchase plan | 1,817,000 |  | 482,000 |  | 1,335,000 |  |  |
Common share options exercised | 11,964,000 | 1,000 | 4,990,000 |  | 6,973,000 |  |  |
Conversions of operating partnership units |  | 1,000 | 591,000 |  |  |  | (592,000) |
Cash distributions declared to perpetual preferred units |  |  |  |  |  |  |  | (5,250,000)
Cash distributions declared to equity holders | (111,778,000) |  |  | (108,109,000) |  |  | (3,669,000) |
Redemption of perpetual preferred units | 0 |  |  |  |  |  |  |
Other |  | (2,000) | 2,000 |  |  |  |  |
Ending Balance at Sep. 30, 2011 | 1,777,849,000 | 839,000 | 2,861,139,000 | (700,897,000) | (452,244,000) | 201,000 | 68,811,000 |
Perpetual Preferred Units, Ending Balance at Sep. 30, 2011 |  |  |  |  |  |  |  | 97,925,000
Beginning Balance at Dec. 31, 2011 | 1,827,768,000 | 845,000 | 2,901,024,000 | (690,466,000) | (452,003,000) | (683,000) | 69,051,000 |
Perpetual Preferred Units, Beginning Balance at Dec. 31, 2011 |  |  |  |  |  |  |  | 97,925,000
Net income | 144,903,000 |  |  | 141,224,000 |  |  | 3,679,000 | 2,851,000
Other comprehensive income | 23,000 |  |  |  |  | 23,000 |  |
Common shares issued | 693,375,000 | 112,000 | 693,263,000 |  |  |  |  |
Net share awards | 11,619,000 |  | (2,477,000) |  | 14,096,000 |  |  |
Employee stock purchase plan | 1,331,000 |  | 613,000 |  | 718,000 |  |  |
Common share options exercised | 13,273,000 |  | 1,840,000 |  | 11,433,000 |  |  |
Conversions of operating partnership units |  | 2,000 | (450,000) |  |  |  | 448,000 |
Cash distributions declared to perpetual preferred units |  |  |  |  |  |  |  | (776,000)
Cash distributions declared to equity holders | (148,943,000) |  |  | (142,993,000) |  |  | (5,950,000) |
Redemption of perpetual preferred units | 100,000,000 |  |  |  |  |  |  | (100,000,000)
Purchase of noncontrolling interests | (10,241,000) |  | (13,285,000) |  |  |  | 3,044,000 |
Ending Balance at Sep. 30, 2012 | 2,533,108,000 | 959,000 | 3,580,528,000 | (692,235,000) | (425,756,000) | (660,000) | 70,272,000 |
Perpetual Preferred Units, Ending Balance at Sep. 30, 2012 |  |  |  |  |  |  |  | $ 0

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