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Earnings Per Share and Earnings Per Unit - Computation of Net Income per Share Basic and Net Income per Share Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Earnings Per Share [Abstract] |  |  |
Net income | $ 1,396,714 | $ 962,501 | $ 1,009,708
Allocation to Noncontrolling Interests – Operating Partnership | (45,900) | (34,010) | (36,034)
Net (income) loss attributable to Noncontrolling Interests – Partially Owned Properties | (17,964) | (14,855) | (3,297)
Preferred distributions | (3,090) | (3,090) | (3,090)
Net income available to Common Shares | 1,329,760 | 910,546 | 967,287
Numerator for net income per share – diluted | $ 1,375,660 | $ 944,556 | $ 1,003,321
Weighted average Common Shares outstanding | 373,833 | 371,791 | 370,461
OP Units | 12,263 | 13,003 | 12,907
Dilutive Securities Options | 1,924 | 1,080 | 2,965
ATM forward sales | 69 |  |
Denominator for net income per share – diluted | 388,089 | 385,874 | 386,333
Net income per share – basic | $ 3.56 | $ 2.45 | $ 2.61
Net income per share – diluted | $ 3.54 | $ 2.45 | $ 2.60

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