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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2023
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share Calculation | The following table sets forth the calculation of basic and diluted earnings per share:
| Basic |  | Diluted
| First Quarter
| 2023 |  | 2022 |  | 2023 |  | 2022
| ($ in millions, except per share amounts, shares in millions)
Net income | $ | 466 |  |  | $ | 703 |  |  | $ | 466 |  |  | $ | 703 |
Dividend equivalent payments | (1) |  |  | — |  |  | — |  |  | — |
Income available to common stockholders | $ | 465 |  |  | $ | 703 |  |  | $ | 466 |  |  | $ | 703 |
Weighted-average shares outstanding | 227.7 |  |  | 239.3 |  |  | 227.7 |  |  | 239.3 |
Dilutive effect of outstanding options and share-settled awards |  |  |  |  | 0.6 |  |  | 0.9 |
Adjusted weighted-average shares outstanding |  |  |  |  | 228.3 |  |  | 240.2 |
Earnings per share | $ | 2.04 |  |  | $ | 2.94 |  |  | $ | 2.04 |  |  | $ | 2.93 |

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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 https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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