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CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (Unaudited) (USD $) In Thousands, unless otherwise specified | Total | PREFERRED SHARES | COMMON SHARES, $0.01 PAR VALUE | Additional Paid-in Capital [Member] | RETAINED EARNINGS | Accumulated Other Comprehensive (Loss) | OPERATING PARTNERSHIP | Partially Owned Properties [Member]
--- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance, Noncontrolling Interest at Dec. 31, 2013 | $ 337,995 |  |  |  |  |  | $ 211,412 | $ 126,583
Beginning Balance, Parent at Dec. 31, 2013 | 10,507,201 | 50,000 | 3,605 | 8,561,500 | 2,047,258 | (155,162) |  |
Common Share Issuance: |  |  |  |  |  |  |  |
Conversion of OP Units held by Noncontrolling Interests into OP Units held by General Partner |  |  | 1 | 1,429 |  |  | (1,430) |
Exercise of share options |  |  | 8 | 25,677 |  |  |  |
Stock Issued During Period, Value, Employee Stock Purchase Plan |  |  |  | 2,218 |  |  |  |
Share-based employee compensation expense: |  |  |  |  |  |  |  |
Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition |  |  | 2 | 6,981 |  |  |  |
Share options |  |  |  | 5,330 |  |  |  |
ESPP discount |  |  |  | 587 |  |  |  |
Payments for Repurchase of Common Stock | (1,777) |  |  | (1,777) |  |  |  |
Supplemental Executive Retirement Plan (SERP) |  |  |  | 4,212 |  |  |  |
Acquisition Noncontrolling Interests Partially Owned Properties |  |  |  | (2,308) |  |  |  | (2,244)
Change in market value | (80,615) |  |  | (80,615) |  |  |  |
Adjustment for Noncontrolling Interests ownership in Operating Partnership |  |  |  | 4,146 |  |  | (4,146) |
Net income attributable to controlling interests | 191,825 |  |  |  | 191,825 |  |  |
Common Share distributions |  |  |  |  | (361,279) |  |  |
Dividends, Preferred Stock, Cash |  |  |  |  | (2,072) |  |  |
Other comprehensive (loss) income – derivative instruments: |  |  |  |  |  |  |  |
Unrealized holding (losses) arising during the period | (21,881) |  |  |  |  | (21,881) |  |
Losses reclassified into earnings from other comprehensive income | (8,335) |  |  |  |  | 8,335 |  |
Currency translation adjustments arising during the period | 1,718 |  |  |  |  | 1,718 |  |
Issuance of LTIP Units to Noncontrolling Interests |  |  |  |  |  |  | 3 |
Equity Compensation associated with Noncontrolling Interests |  |  |  |  |  |  | 10,319 |
Net (Income) Attributable to Noncontrolling Interest | 7,535 |  |  |  |  |  | 7,535 | 1,092
Contributions by Noncontrolling Interests | 5,684 |  |  |  |  |  |  | 5,684
Distributions to Noncontrolling Interests |  |  |  |  |  |  | (14,364) | (5,272)
Change in carrying value |  |  |  |  |  |  | 3,709 |
Ending Balance, Noncontrolling Interest at Jun. 30, 2014 | 338,881 |  |  |  |  |  | 213,038 | 125,843
Ending Balance, Parent at Jun. 30, 2014 | $ 10,289,738 | $ 50,000 | $ 3,616 | $ 8,527,380 | $ 1,875,732 | $ (166,990) |  |

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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration