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Consolidated Statements of Equity - USD ($) $ in Thousands | Total | Limited Partner [Member] | General Partner [Member] | AOCI Attributable to Noncontrolling Interest [Member] | Noncontrolling Interests-Consolidated Real Estate Entities [Member] | Redeemable Common Stock [Member] | Preferred Stock [Member] | Common Stock [Member] | Additional Paid-In Capital [Member] | Accumulated Distributions in Excess Of Net Income [Member] | Accumulated Other Comprehensive (Loss) Income [Member] | Noncontrolling Interests Operating Partnership [Member] | Noncontrolling Interests-Consolidated Real Estate Entities [Member] | Redeemable Common Stock [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2016 | $ 6,642,101 |  |  |  |  |  | $ 9 | $ 1,133 | $ 7,109,012 | $ (707,479) | $ 1,144 | $ 235,976 | $ 2,306 | $ 10,073
Beginning Balance, Shares at Dec. 31, 2016 |  |  |  |  |  |  | 868 | 113,415 |  |  |  |  |  |
Net income | 340,536 | $ 12,157 |  |  |  |  |  |  |  | 328,379 |  | 12,157 |  |
Other comprehensive income - derivative instruments | 1,049 |  |  | $ 1,049 |  |  |  |  |  |  | 1,013 | 36 |  |
Issuance and registration of common shares | 616 |  |  |  |  |  |  | $ 1 | 615 |  |  |  |  | 1,588
Issuance and registration of common shares, Shares |  |  |  |  |  |  |  | 137 |  |  |  |  |  |
Issuance and registration of preferred shares | 2,007 |  |  |  |  |  |  |  | 2,007 |  |  |  |  |
Shares repurchased and retired | (4,782) |  | $ (4,782) |  |  |  |  |  | (4,782) |  |  |  |  |
Shares repurchased and retired, Shares |  |  |  |  |  |  |  | (51) |  |  |  |  |  |
Exercise of stock options | 218 |  | 218 |  |  |  |  |  | 218 |  |  |  |  |
Exercise of stock options, Shares |  |  |  |  |  |  |  | 10 |  |  |  |  |  |
Shares issued in exchange for common units |  |  |  |  |  |  |  |  | 1,602 |  |  | (1,602) |  |
Shares issued in exchange for common units, Shares |  |  |  |  |  |  |  | 29 |  |  |  |  |  |
Shares issued in exchange for redeemable stock | 1,482 |  | 1,482 |  |  | $ (1,482) |  |  | 1,482 |  |  |  |  | (1,482)
Redeemable stock fair market value adjustment | (229) |  | (229) |  |  | 229 |  |  |  | (229) |  |  |  | 229
Adjustment for noncontrolling interests in Operating Partnership |  | (6) | 6 |  |  |  |  |  | 42 |  |  | (42) |  |
Amortization of unearned compensation | 10,802 |  |  |  |  |  |  |  | 10,916 | (114) |  |  |  |
Dividends on preferred stock | (3,688) |  |  |  |  |  |  |  |  | (3,688) |  |  |  |
Dividends on common stock | (401,369) |  |  |  |  |  |  |  |  | (401,369) |  |  |  |
Dividends on noncontrolling interests units | (14,849) |  |  |  |  |  |  |  |  |  |  | (14,849) |  |
Ending Balance at Dec. 31, 2017 | 6,573,894 |  |  |  |  |  | $ 9 | $ 1,134 | 7,121,112 | (784,500) | 2,157 | 231,676 | 2,306 | 10,408
Ending Balance, Shares at Dec. 31, 2017 |  |  |  |  |  |  | 868 | 113,540 |  |  |  |  |  |
Partners' Capital at Dec. 31, 2016 | 6,642,082 | 235,976 | 6,337,721 | 1,246 | $ 2,306 | 10,073 |  |  |  | 64,833 |  |  |  |
Net Income (Loss) Allocated to General Partners |  |  | 324,691 |  |  |  |  |  |  |  |  |  |  |
Dividends, Preferred Stock, Cash | 3,688 |  |  |  |  |  |  |  |  | 3,688 |  |  |  |
Issuance of units | 2,623 |  | 616 |  |  | 1,588 |  |  |  | 2,007 |  |  |  |
General partner units issued in exchange for limited partner units |  | (1,602) | 1,602 |  |  |  |  |  |  |  |  |  |  |
Amortization of unearned compensation | 10,802 |  | 10,802 |  |  |  |  |  |  |  |  |  |  |
Dividends, Preferred Stock, Cash | (3,688) |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions to common unitholders | (416,218) | (14,849) | (401,369) |  |  |  |  |  |  |  |  |  |  |
Partners' Capital at Dec. 31, 2017 | 6,573,875 | 231,676 | 6,270,758 | 2,295 | 2,306 | 10,408 |  |  |  | 66,840 |  |  |  |
Net income | 231,022 | 8,123 |  |  |  |  |  |  |  | 222,899 |  | 8,123 |  |
Other comprehensive income - derivative instruments | (2,689) |  |  | (2,689) |  |  |  |  |  |  | (2,602) | (87) |  |
Issuance and registration of common shares | (263) |  |  |  |  |  |  | $ 1 | (264) |  |  |  |  | 1,482
Issuance and registration of common shares, Shares |  |  |  |  |  |  |  | 142 |  |  |  |  |  |
Shares repurchased and retired | (2,921) |  | (2,921) |  |  |  |  |  | (2,921) |  |  |  |  |
Shares repurchased and retired, Shares |  |  |  |  |  |  |  | (34) |  |  |  |  |  |
Exercise of stock options | 916 |  | 916 |  |  |  |  |  | 916 |  |  |  |  |
Exercise of stock options, Shares |  |  |  |  |  |  |  | 18 |  |  |  |  |  |
Shares issued in exchange for common units |  |  |  |  |  |  |  | $ 1 | 4,443 |  |  | (4,444) |  |
Shares issued in exchange for common units, Shares |  |  |  |  |  |  |  | 80 |  |  |  |  |  |
Shares issued in exchange for redeemable stock | 1,915 |  | 1,915 |  |  | (1,915) |  |  | 1,915 |  |  |  |  | (1,915)
Redeemable stock fair market value adjustment | 561 |  | 561 |  |  | (561) |  |  |  | 561 |  |  |  | (561)
Adjustment for noncontrolling interests in Operating Partnership |  | (153) | 153 |  |  |  |  |  | 66 |  |  | (66) |  |
Cumulative adjustment due to adoption of ASU 2017-12 |  |  | (233) | 233 |  |  |  |  |  | (233) | 233 |  |  |
Amortization of unearned compensation | 12,903 |  |  |  |  |  |  |  | 12,903 |  |  |  |  |
Dividends on preferred stock | (3,688) |  |  |  |  |  |  |  |  | (3,688) |  |  |  |
Dividends on common stock | (424,302) |  |  |  |  |  |  |  |  | (424,302) |  |  |  |
Dividends on noncontrolling interests units | (15,159) |  |  |  |  |  |  |  |  |  |  | (15,159) |  |
Ending Balance at Dec. 31, 2018 | 6,372,189 |  |  |  |  |  | $ 9 | $ 1,136 | 7,138,170 | (989,263) | (212) | 220,043 | 2,306 | 9,414
Ending Balance, Shares at Dec. 31, 2018 |  |  |  |  |  |  | 868 | 113,746 |  |  |  |  |  |
Net Income (Loss) Allocated to General Partners |  |  | 219,211 |  |  |  |  |  |  |  |  |  |  |
Dividends, Preferred Stock, Cash | 3,688 |  |  |  |  |  |  |  |  | 3,688 |  |  |  |
Issuance of units | (264) |  | (264) |  |  | 1,482 |  |  |  |  |  |  |  |
General partner units issued in exchange for limited partner units |  | (4,444) | 4,444 |  |  |  |  |  |  |  |  |  |  |
Amortization of unearned compensation | 12,904 |  | 12,904 |  |  |  |  |  |  |  |  |  |  |
Dividends, Preferred Stock, Cash | (3,688) |  |  |  |  |  |  |  |  | (3,688) |  |  |  |
Distributions to common unitholders | (439,461) | (15,159) | (424,302) |  |  |  |  |  |  |  |  |  |  |
Partners' Capital at Dec. 31, 2018 | 6,372,170 | 220,043 | 6,083,142 | (161) | 2,306 | 9,414 |  |  |  | 66,840 |  |  |  |
Net income | 366,618 | 12,671 |  |  | 136 |  |  |  |  | 353,811 |  | 12,671 | 136 |
Other comprehensive income - derivative instruments | (13,423) |  |  | (13,423) |  |  |  |  |  |  | (12,966) | (457) |  |
Issuance and registration of common shares | 20,500 |  |  |  |  |  |  | $ 4 | 20,496 |  |  |  |  | 1,651
Issuance and registration of common shares, Shares |  |  |  |  |  |  |  | 338 |  |  |  |  |  |
Shares repurchased and retired | (3,724) |  | (3,724) |  |  |  |  |  | (3,724) |  |  |  |  |
Shares repurchased and retired, Shares |  |  |  |  |  |  |  | (37) |  |  |  |  |  |
Exercise of stock options | $ 2,881 |  | 2,881 |  |  |  |  |  | 2,881 |  |  |  |  |
Exercise of stock options, Shares | 69,852 |  |  |  |  |  |  | 48 |  |  |  |  |  |
Shares issued in exchange for common units |  |  |  |  |  |  |  |  | 2,366 |  |  | (2,366) |  |
Shares issued in exchange for common units, Shares |  |  |  |  |  |  |  | 44 |  |  |  |  |  |
Shares issued in exchange for redeemable stock | $ 575 |  | 575 |  |  | (575) |  |  | 575 |  |  |  |  | (575)
Redeemable stock fair market value adjustment | (3,641) |  | (3,641) |  |  | 3,641 |  |  |  | (3,641) |  |  |  | 3,641
Adjustment for noncontrolling interests in Operating Partnership | 6,126 | 359 | (359) |  | 6,126 |  |  |  | (816) |  |  | 816 |  |
Amortization of unearned compensation | 14,684 |  |  |  |  |  |  |  | 14,684 |  |  |  |  |
Dividends on preferred stock | (3,688) |  |  |  |  |  |  |  |  | (3,688) |  |  |  |
Dividends on common stock | (442,698) |  |  |  |  |  |  |  |  | (442,698) |  |  |  |
Dividends on noncontrolling interests units | (16,060) |  |  |  |  |  |  |  |  |  |  | (16,060) |  |
Acquisition of noncontrolling interest | (10,880) |  | (8,559) |  | (2,321) |  |  |  | (8,559) |  |  |  | (2,321) |
Contributions From Non Controlling Interest | 6,126 |  |  |  |  |  |  |  |  |  |  |  | 6,126 |
Ending Balance at Dec. 31, 2019 | 6,289,459 |  |  |  |  |  | $ 9 | $ 1,140 | $ 7,166,073 | (1,085,479) | $ (13,178) | $ 214,647 | $ 6,247 | $ 14,131
Ending Balance, Shares at Dec. 31, 2019 |  |  |  |  |  |  | 868 | 114,139 |  |  |  |  |  |
Net Income (Loss) Allocated to General Partners |  |  | 350,123 |  |  |  |  |  |  |  |  |  |  |
Dividends, Preferred Stock, Cash | 3,688 |  |  |  |  |  |  |  |  | 3,688 |  |  |  |
Issuance of units | 20,500 |  | 20,500 |  |  | 1,651 |  |  |  |  |  |  |  |
General partner units issued in exchange for limited partner units |  | (2,366) | 2,366 |  |  |  |  |  |  |  |  |  |  |
Amortization of unearned compensation | 14,684 |  | 14,684 |  |  |  |  |  |  |  |  |  |  |
Dividends, Preferred Stock, Cash | (3,688) |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions to common unitholders | (458,758) | (16,060) | (442,698) |  |  |  |  |  |  |  |  |  |  |
Partners' Capital at Dec. 31, 2019 | $ 6,289,440 | $ 214,647 | $ 6,015,290 | $ (13,584) | $ 6,247 | $ 14,131 |  |  |  | $ 66,840 |  |  |  |

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