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v3.20.4

Organization, Basis of Presentation, and Significant Accounting Policies (Details 3) | 12 Months Ended
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Dec. 31, 2020 USD ($) community home $ / shares shares | Dec. 31, 2019 USD ($) $ / shares shares | Dec. 31, 2018 USD ($) $ / shares shares
Basic and diluted shares outstanding |  |  |
Weighted average common shares—basic | shares | 140,094,722 | 139,054,191 | 137,844,755
Weighted average DownREIT units outstanding (in shares) | shares | 7,500 | 7,500 | 7,500
Effect of dilutive securities (in shares) | shares | 332,973 | 509,859 | 436,986
Weighted average common shares - diluted (in shares) | shares | 140,435,195 | 139,571,550 | 138,289,241
Calculation of Earnings per Share—basic |  |  |
Net Income (Loss) Available to Common Stockholders, Basic | $ 827,630,000 | $ 785,974,000 | $ 974,525,000
Net income allocated to unvested restricted shares | (1,955,000) | (2,063,000) | (2,839,000)
Net income attributable to common stockholders, adjusted | $ 825,675,000 | $ 783,911,000 | $ 971,686,000
Weighted average common shares—basic | shares | 140,094,722 | 139,054,191 | 137,844,755
Earnings per common share - basic (in dollars per share) | $ / shares | $ 5.89 | $ 5.64 | $ 7.05
Calculation of Earnings per Share—diluted |  |  |
Net Income (Loss) Available to Common Stockholders, Basic | $ 827,630,000 | $ 785,974,000 | $ 974,525,000
Add: noncontrolling interests of DownREIT unitholders in consolidated partnerships, including discontinued operations | 48,000 | 46,000 | 44,000
Adjusted net income attributable to common stockholders | $ 827,678,000 | $ 786,020,000 | $ 974,569,000
Weighted average common shares—diluted | shares | 140,435,195 | 139,571,550 | 138,289,241
Earnings per common share - diluted (in dollars per share) | $ / shares | $ 5.89 | $ 5.63 | $ 7.05
Real Estate [Line Items] |  |  |
Operating Lease, Lease Income | $ 2,297,442,000 | $ 2,319,666,000 | $ 2,280,963,000
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |
Abandoned pursuits costs | 12,317,000 | 4,896,000 | 4,388,000
Casualty and impairment loss, net | 0 | 0 | 215,000
Impairment of investment in unconsolidated entities | 0 | 0 | 0
Management, development and other fees | 3,819,000 | 4,960,000 | 3,572,000
Revenues | $ 2,301,261,000 | 2,324,626,000 | 2,284,535,000
Number of real estate properties | community | 273 |  |
Number of Units in Real Estate Property | home | 80,094 |  |
New York City, NY |  |  |
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |
Abandoned pursuits costs | $ 7,264,000 |  |
Land |  |  |
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |
Casualty and impairment loss, net | 0 | 0 | 826,000
Continuing Operations |  |  |
Real Estate [Line Items] |  |  |
Operating Lease, Lease Income | 2,242,282,000 | 2,236,405,000 | 2,084,704,000
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |
Management, development and other fees | 13,643,000 | 13,612,000 | 9,818,000
Business interruption insurance proceeds | 385,000 | 1,441,000 | 26,000
Revenues | 2,256,310,000 | 2,251,458,000 | 2,094,548,000
Management, Development And Other [Member] | Continuing Operations |  |  |
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |
Management, development and other fees | 3,819,000 | 4,960,000 | 3,572,000
Rental and non-rental related income | Continuing Operations |  |  |
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |
Management, development and other fees | 9,824,000 | 8,652,000 | 6,246,000
Corporate, Non-Segment [Member] |  |  |
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |
Revenues | 3,819,000 | 4,960,000 | 3,572,000
Corporate, Non-Segment [Member] | Continuing Operations |  |  |
Real Estate [Line Items] |  |  |
Operating Lease, Lease Income | 0 | 0 | 0
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |
Management, development and other fees | 3,819,000 | 4,960,000 | 3,572,000
Business interruption insurance proceeds | 0 | 0 | 0
Revenues | 3,819,000 | 4,960,000 | 3,572,000
Corporate, Non-Segment [Member] | Management, Development And Other [Member] | Continuing Operations |  |  |
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |
Management, development and other fees | 3,819,000 | 4,960,000 | 3,572,000
Corporate, Non-Segment [Member] | Rental and non-rental related income | Continuing Operations |  |  |
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |
Management, development and other fees | 0 | 0 | 0
Established Communities | Operating segment |  |  |
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |
Revenues | 2,028,317,000 | 2,107,288,000 | 1,731,570,000
Established Communities | Operating segment | Continuing Operations |  |  |
Real Estate [Line Items] |  |  |
Operating Lease, Lease Income | 2,021,232,000 | 2,099,273,000 | 1,727,299,000
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |
Management, development and other fees | 6,970,000 | 7,028,000 | 4,245,000
Business interruption insurance proceeds | 115,000 | 987,000 | 26,000
Revenues | 2,028,317,000 | 2,107,288,000 | 1,731,570,000
Established Communities | Operating segment | Management, Development And Other [Member] | Continuing Operations |  |  |
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |
Management, development and other fees | 0 | 0 | 0
Established Communities | Operating segment | Rental and non-rental related income | Continuing Operations |  |  |
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |
Management, development and other fees | 6,970,000 | 7,028,000 | 4,245,000
Other Stabilized Communities | Operating segment |  |  |
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |
Revenues | 140,173,000 | 110,434,000 | 238,584,000
Other Stabilized Communities | Operating segment | Continuing Operations |  |  |
Real Estate [Line Items] |  |  |
Operating Lease, Lease Income | 138,113,000 | 108,756,000 | 236,852,000
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |
Management, development and other fees | 1,790,000 | 1,224,000 | 1,732,000
Business interruption insurance proceeds | 270,000 | 454,000 | 0
Revenues | 140,173,000 | 110,434,000 | 238,584,000
Other Stabilized Communities | Operating segment | Management, Development And Other [Member] | Continuing Operations |  |  |
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |
Management, development and other fees | 0 | 0 | 0
Other Stabilized Communities | Operating segment | Rental and non-rental related income | Continuing Operations |  |  |
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |
Management, development and other fees | 1,790,000 | 1,224,000 | 1,732,000
Development/Redevelopment Communities | Operating segment | Continuing Operations |  |  |
Real Estate [Line Items] |  |  |
Operating Lease, Lease Income | 82,937,000 | 28,376,000 | 120,553,000
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |
Management, development and other fees | 1,064,000 | 400,000 | 269,000
Business interruption insurance proceeds | 0 | 0 | 0
Revenues | 84,001,000 | 28,776,000 | 120,822,000
Development/Redevelopment Communities | Operating segment | Management, Development And Other [Member] | Continuing Operations |  |  |
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |
Management, development and other fees | 0 | 0 | 0
Development/Redevelopment Communities | Operating segment | Rental and non-rental related income | Continuing Operations |  |  |
Casualty Loss, Abandoned Pursuit Costs and Impairment of Long-Lived Assets |  |  |
Management, development and other fees | $ 1,064,000 | $ 400,000 | $ 269,000

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