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Stockholders' Equity and Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2021
Stockholders' Equity and Earnings Per Share [Abstract] |
Schedule of earnings per share calculations | The following table presents the basic and diluted EPS calculations for the three months ended March 31, 2021 and 2020. For more information on the calculation of EPS, see Note 1 — Summary of Significant Accounting Policies — Significant Accounting Policies — Earnings Per Share to the Consolidated Financial Statements of the Company’s 2020 Form 10-K.
($ and shares in thousands, except per share data) |  | Three Months Ended March 31, |  |  |  |  |
| 2021 |  | 2020 |  |  |  |  |  |  |
Basic: |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 204,994 |  |  | $ | 144,824 |  |  |  |  |  |  |  |
Basic weighted-average number of shares outstanding |  | 141,646 |  |  | 144,814 |  |  |  |  |  |  |  |
Basic EPS |  | $ | 1.45 |  |  | $ | 1.00 |  |  |  |  |  |  |  |
Diluted: |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 204,994 |  |  | $ | 144,824 |  |  |  |  |  |  |  |
Basic weighted-average number of shares outstanding |  | 141,646 |  |  | 144,814 |  |  |  |  |  |  |  |
Diluted potential common shares (1) |  | 1,198 |  |  | 471 |  |  |  |  |  |  |  |
Diluted weighted-average number of shares outstanding (1) |  | 142,844 |  |  | 145,285 |  |  |  |  |  |  |  |
Diluted EPS |  | $ | 1.44 |  |  | $ | 1.00 |  |  |  |  |  |  |  |
(1)Includes dilutive shares from RSUs for the three months ended March 31, 2021 and 2020.

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- Definition Stockholders' Equity and Earnings Per Share [Abstract] + References No definition available. + Details
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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 -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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