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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2021
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
| 2021 |  | 2020 |  | 2019 |  | 2021 |  | 2020 |  | 2019
| ($ in millions except per share amounts, shares in millions)
Net income | $ | 3,005 |  |  | $ | 2,013 |  |  | $ | 2,722 |  |  | $ | 3,005 |  |  | $ | 2,013 |  |  | $ | 2,722 |
Dividend equivalent payments | (2) |  |  | (3) |  |  | (5) |  |  | — |  |  | (2) |  |  | — |
Income available to common stockholders | $ | 3,003 |  |  | $ | 2,010 |  |  | $ | 2,717 |  |  | $ | 3,005 |  |  | $ | 2,011 |  |  | $ | 2,722 |
Weighted-average shares outstanding | 246.9 |  |  | 255.1 |  |  | 263.3 |  |  | 246.9 |  |  | 255.1 |  |  | 263.3 |
Dilutive effect of outstanding options |  |  |  |  |  |  |  |  |  |  |
and share-settled awards |  |  |  |  |  |  | 1.2 |  |  | 1.5 |  |  | 2.3 |
Adjusted weighted-average shares outstanding |  |  |  |  |  |  | 248.1 |  |  | 256.6 |  |  | 265.6 |
Earnings per share | $ | 12.16 |  |  | $ | 7.88 |  |  | $ | 10.32 |  |  | $ | 12.11 |  |  | $ | 7.84 |  |  | $ | 10.25 |

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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=124432515&loc=d3e3550-109257 + Details
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