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Earnings Per Share ("EPS") (Tables) | 12 Months Ended
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Dec. 31, 2023
Earnings Per Share [Abstract] |
Computation Of Basic And Diluted Earnings Per Share | The following table sets forth the computation of basic and diluted earnings per share for the years ended December 31, 2023, 2022, and 2021 (in thousands, except per share data):
|  | Year Ended December 31, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Net income |  | $ | 522,536 |  |  | $ | 662,155 |  |  | $ | 824,858 |
Preferred dividends |  |  | 37,281 |  |  |  | 37,281 |  |  |  | 35,587 |
Net income available to common shareholders |  | $ | 485,255 |  |  | $ | 624,874 |  |  | $ | 789,271 |
Shares for basic and diluted calculation: |  |  |  |  |  |  |  |  |
Average shares used in basic computation |  |  | 106,661 |  |  |  | 108,848 |  |  |  | 107,536 |
Dilutive effect of stock options and units (1) |  |  | 6,792 |  |  |  | 8,692 |  |  |  | 10,994 |
Average shares used in diluted computation |  |  | 113,453 |  |  |  | 117,540 |  |  |  | 118,530 |
Earnings per common share: |  |  |  |  |  |  |  |  |
Basic |  | $ | 4.55 |  |  | $ | 5.74 |  |  | $ | 7.34 |
Diluted |  | $ | 4.28 |  |  | $ | 5.32 |  |  | $ | 6.66 |
(1) Diluted earnings per share is computed on the basis of the weighted-average number of shares of common stock plus the effect of dilutive potential common shares outstanding during the period using the treasury stock method. Diluted earnings per share include units.

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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://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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