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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 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
| 2023 |  | 2022 |  | 2021 |  | 2023 |  | 2022 |  | 2021
| ($ in millions except per share amounts, shares in millions)
Net income | $ | 1,827 |  |  | $ | 3,270 |  |  | $ | 3,005 |  |  | $ | 1,827 |  |  | $ | 3,270 |  |  | $ | 3,005 |
Dividend equivalent payments | (3) |  |  | (2) |  |  | (2) |  |  | (3) |  |  | (1) |  |  | — |
Income available to common stockholders | $ | 1,824 |  |  | $ | 3,268 |  |  | $ | 3,003 |  |  | $ | 1,824 |  |  | $ | 3,269 |  |  | $ | 3,005 |
Weighted-average shares outstanding | 226.9 |  |  | 234.8 |  |  | 246.9 |  |  | 226.9 |  |  | 234.8 |  |  | 246.9 |
Dilutive effect of outstanding options |  |  |  |  |  |  |  |  |  |  |
and share-settled awards |  |  |  |  |  |  | 0.5 |  |  | 0.8 |  |  | 1.2 |
Adjusted weighted-average shares outstanding |  |  |  |  |  |  | 227.4 |  |  | 235.6 |  |  | 248.1 |
Earnings per share | $ | 8.04 |  |  | $ | 13.92 |  |  | $ | 12.16 |  |  | $ | 8.02 |  |  | $ | 13.88 |  |  | $ | 12.11 |

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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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