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Earnings Per Share and Earnings Per Unit (Tables) | 12 Months Ended
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Dec. 31, 2019
Schedule of Calculation of Numerator and Denominator in Earnings Per Share and Earnings Per Unit | The following tables set forth the computation of net income per share – basic and net income per share – diluted for the Company (amounts in thousands except per share amounts):
|  | Year Ended December 31, |
|  | 2019 |  |  | 2018 |  |  | 2017 |
Numerator for net income per share – basic: |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 1,009,708 |  |  | $ | 685,192 |  |  | $ | 628,381 |
Allocation to Noncontrolling Interests – Operating Partnership |  |  | (36,034 | ) |  |  | (24,939 | ) |  |  | (22,604 | )
Net (income) loss attributable to Noncontrolling Interests – Partially Owned Properties |  |  | (3,297 | ) |  |  | (2,718 | ) |  |  | (2,323 | )
Preferred distributions |  |  | (3,090 | ) |  |  | (3,090 | ) |  |  | (3,091 | )
Numerator for net income per share – basic |  | $ | 967,287 |  |  | $ | 654,445 |  |  | $ | 600,363 |
Numerator for net income per share – diluted: |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 1,009,708 |  |  | $ | 685,192 |  |  | $ | 628,381 |
Net (income) loss attributable to Noncontrolling Interests – Partially Owned Properties |  |  | (3,297 | ) |  |  | (2,718 | ) |  |  | (2,323 | )
Preferred distributions |  |  | (3,090 | ) |  |  | (3,090 | ) |  |  | (3,091 | )
Numerator for net income per share – diluted |  | $ | 1,003,321 |  |  | $ | 679,384 |  |  | $ | 622,967 |
Denominator for net income per share – basic and diluted: |  |  |  |  |  |  |  |  |  |  |  |
Denominator for net income per share – basic |  |  | 370,461 |  |  |  | 368,052 |  |  |  | 366,968 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
OP Units |  |  | 12,907 |  |  |  | 12,869 |  |  |  | 12,901 |
Long-term compensation shares/units |  |  | 2,965 |  |  |  | 2,774 |  |  |  | 2,809 |
Denominator for net income per share – diluted |  |  | 386,333 |  |  |  | 383,695 |  |  |  | 382,678 |
Net income per share – basic |  | $ | 2.61 |  |  | $ | 1.78 |  |  | $ | 1.64 |
Net income per share – diluted |  | $ | 2.60 |  |  | $ | 1.77 |  |  | $ | 1.63 |
ERPOP [Member] |
Schedule of Calculation of Numerator and Denominator in Earnings Per Share and Earnings Per Unit | The following tables set forth the computation of net income per Unit – basic and net income per Unit – diluted for the Operating Partnership (amounts in thousands except per Unit amounts):
|  | Year Ended December 31, |
|  | 2019 |  |  | 2018 |  |  | 2017 |
Numerator for net income per Unit – basic and diluted: |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 1,009,708 |  |  | $ | 685,192 |  |  | $ | 628,381 |
Net (income) loss attributable to Noncontrolling Interests – Partially Owned Properties |  |  | (3,297 | ) |  |  | (2,718 | ) |  |  | (2,323 | )
Allocation to Preference Units |  |  | (3,090 | ) |  |  | (3,090 | ) |  |  | (3,091 | )
Numerator for net income per Unit – basic and diluted |  | $ | 1,003,321 |  |  | $ | 679,384 |  |  | $ | 622,967 |
Denominator for net income per Unit – basic and diluted: |  |  |  |  |  |  |  |  |  |  |  |
Denominator for net income per Unit – basic |  |  | 383,368 |  |  |  | 380,921 |  |  |  | 379,869 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
Dilution for Units issuable upon assumed exercise/vesting of the Company’s long-term compensation shares/units |  |  | 2,965 |  |  |  | 2,774 |  |  |  | 2,809 |
Denominator for net income per Unit – diluted |  |  | 386,333 |  |  |  | 383,695 |  |  |  | 382,678 |
Net income per Unit – basic |  | $ | 2.61 |  |  | $ | 1.78 |  |  | $ | 1.64 |
Net income per Unit – diluted |  | $ | 2.60 |  |  | $ | 1.77 |  |  | $ | 1.63 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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