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Consolidated Statements Of Equity - USD ($) $ in Thousands | Total | Cumulative Effect, Period of Adoption, Adjustment | Common Stock [Member] | Preferred Stock [Member] | Additional Paid-In Capital [Member] | Dividends In Excess Of Earnings [Member] | Dividends In Excess Of Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment | Treasury Stock, at cost [Member] | Accumulated Other Comprehensive Loss [Member] | Noncontrolling Interests [Member] | Noncontrolling Interests [Member] Cumulative Effect, Period of Adoption, Adjustment | Noncontrolling interest - property partnerships [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Equity, shares at Dec. 31, 2019 |  |  | 154,790,000 |  |  |  |  |  |  |  |  |
Equity, value at Dec. 31, 2019 | $ 8,014,236 | $ (1,679) | $ 1,548 | $ 200,000 | $ 6,294,719 | $ (760,523) | $ (1,505) | $ (2,722) | $ (48,335) | $ 600,860 | $ (174) | $ 1,728,689
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Redemption of operating partnership units to common stock, shares |  |  | 462,000 |  |  |  |  |  |  |  |  |
Redemption of operating partnership units to common stock, value | 0 |  | $ 5 |  | 15,490 |  |  |  |  | (15,495) |  |
Allocated net income for the year | 577,146 |  |  |  |  | 500,121 |  |  |  | 57,539 |  | 19,486
Dividends/distributions declared | (172,277) |  |  |  |  | (154,833) |  |  |  | (17,444) |  |
Shares issued pursuant to stock purchase plan, shares |  |  | 2,000 |  |  |  |  |  |  |  |  |
Shares issued pursuant to stock purchase plan, value | 325 |  |  |  | 325 |  |  |  |  |  |  |
Net activity from stock option and incentive plan, shares |  |  | 61,000 |  |  |  |  |  |  |  |  |
Net activity from stock option and incentive plan, value | 23,060 |  |  |  | 7,383 |  |  |  |  | 15,677 |  |
Preferred Stock Redemption Charge | 0 |  |  |  |  |  |  |  |  |  |  |
Contributions from noncontrolling interests in property partnerships | 3,876 |  |  |  |  |  |  |  |  |  |  | 3,876
Distributions to noncontrolling interests in property partnerships | (15,750) |  |  |  |  |  |  |  |  |  |  | (15,750)
Effective portion of interest rate contracts | (9,720) |  |  |  |  |  |  |  | (8,732) | (988) |  |
Amortization of interest rate contracts | 1,666 |  |  |  |  |  |  |  | 1,367 | 155 |  | 144
Reallocation of noncontrolling interest | 0 |  |  |  | 3,558 |  |  |  |  | (3,558) |  |
Equity, shares at Mar. 31, 2020 |  |  | 155,315,000 |  |  |  |  |  |  |  |  |
Equity, value at Mar. 31, 2020 | $ 8,420,883 |  | $ 1,553 | 200,000 | 6,321,475 | (416,740) |  | (2,722) | (55,700) | 636,572 |  | 1,736,445
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Accounting Standards Update [Extensible List] | Accounting Standards Update 2018-09 | Accounting Standards Update 2018-09 |  |  |  |  |  |  |  |  |  |  |
Equity, shares at Dec. 31, 2020 | 155,718,825 |  | 155,719,000 |  |  |  |  |  |  |  |  |
Equity, value at Dec. 31, 2020 | $ 8,339,612 |  | $ 1,557 | 200,000 | 6,356,791 | (509,653) |  | (2,722) | (49,890) | 616,596 |  | 1,726,933
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Redemption of operating partnership units to common stock, shares |  |  | 118,000 |  |  |  |  |  |  |  |  |
Redemption of operating partnership units to common stock, value | 0 |  | $ 1 |  | 4,197 |  |  |  |  | (4,198) |  |
Allocated net income for the year | 128,147 |  |  |  |  | 100,596 |  |  |  | 11,084 |  | 16,467
Dividends/distributions declared | (172,800) |  |  |  |  | (155,513) |  |  |  | (17,287) |  |
Shares issued pursuant to stock purchase plan, shares |  |  | 5,000 |  |  |  |  |  |  |  |  |
Shares issued pursuant to stock purchase plan, value | 484 |  |  |  | 484 |  |  |  |  |  |  |
Net activity from stock option and incentive plan, shares |  |  | 232,000 |  |  |  |  |  |  |  |  |
Net activity from stock option and incentive plan, value | 38,467 |  | $ 3 |  | 20,002 |  |  |  |  | 18,462 |  |
Preferred Stock Redemption Charge | (6,412) |  |  |  |  | (6,412) |  |  |  |  |  |
Contributions from noncontrolling interests in property partnerships | 281 |  |  |  |  |  |  |  |  |  |  | 281
Distributions to noncontrolling interests in property partnerships | (18,225) |  |  |  |  |  |  |  |  |  |  | (18,225)
Effective portion of interest rate contracts | 3,740 |  |  |  |  |  |  |  | 3,370 | 370 |  | 0
Amortization of interest rate contracts | 1,676 |  |  |  |  |  |  |  | 1,381 | 151 |  | 144
Reallocation of noncontrolling interest | $ 0 |  |  |  | 5,072 |  |  |  |  | (5,072) |  |
Equity, shares at Mar. 31, 2021 | 156,074,200 |  | 156,074,000 |  |  |  |  |  |  |  |  |
Equity, value at Mar. 31, 2021 | $ 8,121,347 |  | $ 1,561 | 0 | 6,392,923 | $ (570,982) |  | $ (2,722) | $ (45,139) | $ 620,106 |  | $ 1,725,600
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Redemption Amount | $ (193,623) |  |  | $ (200,000) | $ (6,377) |  |  |  |  |  |  |

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