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CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Thousands, $ in Thousands | Total | Common Stock | Additional Paid-In Capital | Cumulative Dividends In Excess Of Earnings | Accumulated Other Comprehensive Income (Loss) | Total Stockholders’ Equity | Total Noncontrolling Interests | Cumulative Effect, Period of Adoption, Adjustment | Cumulative Effect, Period of Adoption, Adjustment Cumulative Dividends In Excess Of Earnings | Cumulative Effect, Period of Adoption, Adjustment Total Stockholders’ Equity | Cumulative Effect, Period of Adoption, Adjusted Balance | Cumulative Effect, Period of Adoption, Adjusted Balance Common Stock | Cumulative Effect, Period of Adoption, Adjusted Balance Additional Paid-In Capital | Cumulative Effect, Period of Adoption, Adjusted Balance Cumulative Dividends In Excess Of Earnings | Cumulative Effect, Period of Adoption, Adjusted Balance Accumulated Other Comprehensive Income (Loss) | Cumulative Effect, Period of Adoption, Adjusted Balance Total Stockholders’ Equity | Cumulative Effect, Period of Adoption, Adjusted Balance Total Noncontrolling Interests
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Balance (in shares) at Dec. 31, 2018 |  | 477,496 |  |  |  |  |  |  |  |  |  |  |  |  | 477,496 |  |  |  |  |
Balance at Dec. 31, 2018 | $ 6,512,591 | $ 477,496 | $ 8,398,847 | $ (2,927,196) | $ (4,708) | $ 5,944,439 | $ 568,152 | $ 590 | [1] | $ 590 | [1] | $ 590 | [1] | $ 6,513,181 | $ 477,496 | $ 8,398,847 | $ (2,926,606) | $ (4,708) | $ 5,945,029 | $ 568,152
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | 12,702 |  |  | 2,010 |  | 2,010 | 10,692 |  |  |  |  |  |  |  |  |  |  |  |  |
Other comprehensive income (loss) | (515) |  |  |  | (515) | (515) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock, net (in shares) |  | 17,272 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock, net | 509,242 | $ 17,272 | 491,970 |  |  | 509,242 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of DownREIT units to common stock (in shares) |  | 184 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of DownREIT units to common stock | 0 | $ 184 | 3,890 |  |  | 4,074 | (4,074) |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of common stock (in shares) |  | (159) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of common stock | (4,931) | $ (159) | (4,772) |  |  | (4,931) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise of stock options (in shares) |  | 55 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise of stock options | 1,435 | $ 55 | 1,380 |  |  | 1,435 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of deferred compensation | 14,529 |  | 14,529 |  |  | 14,529 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common dividends | (536,660) |  |  | (536,660) |  | (536,660) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions to noncontrolling interests | (17,724) |  |  |  |  |  | (17,724) |  |  |  |  |  |  |  |  |  |  |  |  |
Issuances of noncontrolling interests | 33,318 |  |  |  |  |  | 33,318 |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase of noncontrolling interests | (1,218) |  | (1,079) |  |  | (1,079) | (139) |  |  |  |  |  |  |  |  |  |  |  |  |
Balance (in shares) at Sep. 30, 2019 |  | 494,848 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at Sep. 30, 2019 | $ 6,523,359 | $ 494,848 | 8,904,765 | (3,461,256) | (5,223) | 5,933,134 | 590,225 |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting Standards Update [Extensible List] | us-gaap:AccountingStandardsUpdate201613Member |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance (in shares) at Dec. 31, 2018 |  | 477,496 |  |  |  |  |  |  |  |  |  |  |  |  | 477,496 |  |  |  |  |
Balance at Dec. 31, 2018 | $ 6,512,591 | $ 477,496 | 8,398,847 | (2,927,196) | (4,708) | 5,944,439 | 568,152 | 590 | [1] | 590 | [1] | 590 | [1] | 6,513,181 | $ 477,496 | 8,398,847 | (2,926,606) | (4,708) | 5,945,029 | 568,152
Balance (in shares) at Dec. 31, 2019 |  | 505,222 |  |  |  |  |  |  |  |  |  |  |  |  | 505,222 |  |  |  |  |
Balance at Dec. 31, 2019 | 6,667,474 | $ 505,222 | 9,183,892 | (3,601,199) | (2,857) | 6,085,058 | 582,416 | (1,524) | [2] | (1,524) | [2] | (1,524) | [2] | 6,665,950 | $ 505,222 | 9,183,892 | (3,602,723) | (2,857) | 6,083,534 | 582,416
Balance (in shares) at Jun. 30, 2019 |  | 491,109 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at Jun. 30, 2019 | 6,619,272 | $ 491,109 | 8,801,037 | (3,233,283) | (4,459) | 6,054,404 | 564,868 |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | (42,308) |  |  | (45,863) |  | (45,863) | 3,555 |  |  |  |  |  |  |  |  |  |  |  |  |
Other comprehensive income (loss) | (764) |  |  |  | (764) | (764) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock, net (in shares) |  | 3,703 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock, net | 102,429 | $ 3,703 | 98,726 |  |  | 102,429 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of common stock (in shares) |  | (10) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of common stock | (349) | $ (10) | (339) |  |  | (349) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise of stock options (in shares) |  | 46 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise of stock options | 1,216 | $ 46 | 1,170 |  |  | 1,216 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of deferred compensation | 4,171 |  | 4,171 |  |  | 4,171 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common dividends | (182,110) |  |  | (182,110) |  | (182,110) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions to noncontrolling interests | (7,901) |  |  |  |  |  | (7,901) |  |  |  |  |  |  |  |  |  |  |  |  |
Issuances of noncontrolling interests | 29,703 |  |  |  |  |  | 29,703 |  |  |  |  |  |  |  |  |  |  |  |  |
Balance (in shares) at Sep. 30, 2019 |  | 494,848 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at Sep. 30, 2019 | 6,523,359 | $ 494,848 | 8,904,765 | (3,461,256) | (5,223) | 5,933,134 | 590,225 |  |  |  |  |  |  |  |  |  |  |  |  |
Balance (in shares) at Dec. 31, 2019 |  | 505,222 |  |  |  |  |  |  |  |  |  |  |  |  | 505,222 |  |  |  |  |
Balance at Dec. 31, 2019 | 6,667,474 | $ 505,222 | 9,183,892 | (3,601,199) | (2,857) | 6,085,058 | 582,416 | $ (1,524) | [2] | $ (1,524) | [2] | $ (1,524) | [2] | $ 6,665,950 | $ 505,222 | $ 9,183,892 | $ (3,602,723) | $ (2,857) | $ 6,083,534 | $ 582,416
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | 278,008 |  |  | 267,169 |  | 267,169 | 10,839 |  |  |  |  |  |  |  |  |  |  |  |  |
Other comprehensive income (loss) | (379) |  |  |  | (379) | (379) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock, net (in shares) |  | 33,248 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock, net | 1,065,900 | $ 33,248 | 1,032,652 |  |  | 1,065,900 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of DownREIT units to common stock (in shares) |  | 120 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of DownREIT units to common stock | 0 | $ 120 | 3,957 |  |  | 4,077 | (4,077) |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of common stock (in shares) |  | (289) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of common stock | (10,273) | $ (289) | (9,984) |  |  | (10,273) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise of stock options (in shares) |  | 54 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise of stock options | 1,806 | $ 54 | 1,752 |  |  | 1,806 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of deferred compensation | 15,817 |  | 15,817 |  |  | 15,817 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common dividends | (587,596) |  |  | (587,596) |  | (587,596) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions to noncontrolling interests | (22,925) |  |  |  |  |  | (22,925) |  |  |  |  |  |  |  |  |  |  |  |  |
Balance (in shares) at Sep. 30, 2020 |  | 538,355 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at Sep. 30, 2020 | 7,406,308 | $ 538,355 | 10,228,086 | (3,923,150) | (3,236) | 6,840,055 | 566,253 |  |  |  |  |  |  |  |  |  |  |  |  |
Balance (in shares) at Jun. 30, 2020 |  | 538,318 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at Jun. 30, 2020 | 7,668,721 | $ 538,318 | 10,222,728 | (3,660,187) | (2,186) | 7,098,673 | 570,048 |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | (59,581) |  |  | (63,417) |  | (63,417) | 3,836 |  |  |  |  |  |  |  |  |  |  |  |  |
Other comprehensive income (loss) | (1,050) |  |  |  | (1,050) | (1,050) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock, net (in shares) |  | 47 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock, net | 511 | $ 47 | 464 |  |  | 511 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of common stock (in shares) |  | (10) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of common stock | (275) | $ (10) | (265) |  |  | (275) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of deferred compensation | 5,159 |  | 5,159 |  |  | 5,159 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common dividends | (199,546) |  |  | (199,546) |  | (199,546) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions to noncontrolling interests | (7,631) |  |  |  |  |  | (7,631) |  |  |  |  |  |  |  |  |  |  |  |  |
Balance (in shares) at Sep. 30, 2020 |  | 538,355 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at Sep. 30, 2020 | $ 7,406,308 | $ 538,355 | $ 10,228,086 | $ (3,923,150) | $ (3,236) | $ 6,840,055 | $ 566,253 |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | On January 1, 2019, the Company adopted a series of ASUs related to accounting for leases and recognized the cumulative-effect of adoption to beginning retained earnings. Refer to Note 2 for a detailed impact of adoption.
[2] | On January 1, 2020, the Company adopted a series of Accounting Standards Updates (“ASUs”) related to accounting for credit losses and recognized the cumulative-effect of adoption to beginning retained earnings. Refer to Note 2 for a detailed impact of adoption.

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- Definition Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. 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