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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2021
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The following table sets forth the calculation of basic and diluted earnings per share:
| Basic |  | Diluted
| Second Quarter
| 2021 |  | 2020 |  | 2021 |  | 2020
| ($ in millions, except per share amounts, shares in millions)
Net income | $ | 819 |  |  | $ | 392 |  |  | $ | 819 |  |  | $ | 392 |
Dividend equivalent payments | — |  |  | — |  |  | — |  |  | — |
Income available to common stockholders | $ | 819 |  |  | $ | 392 |  |  | $ | 819 |  |  | $ | 392 |
Weighted-average shares outstanding | 248.9 |  |  | 255.4 |  |  | 248.9 |  |  | 255.4 |
Dilutive effect of outstanding options and share-settled awards |  |  |  |  | 1.1 |  |  | 1.3 |
Adjusted weighted-average shares outstanding |  |  |  |  | 250.0 |  |  | 256.7 |
Earnings per share | $ | 3.29 |  |  | $ | 1.53 |  |  | $ | 3.28 |  |  | $ | 1.53 |
| Basic |  | Diluted
| First Six Months
| 2021 |  | 2020 |  | 2021 |  | 2020
| ($ in millions, except per share amounts, shares in millions)
Net income | $ | 1,492 |  |  | $ | 773 |  |  | $ | 1,492 |  |  | $ | 773 |
Dividend equivalent payments | (1) |  |  | (1) |  |  | — |  |  | (1) |
Income available to common stockholders | $ | 1,491 |  |  | $ | 772 |  |  | $ | 1,492 |  |  | $ | 772 |
Weighted-average shares outstanding | 250.1 |  |  | 256.3 |  |  | 250.1 |  |  | 256.3 |
Dilutive effect of outstanding options and share-settled awards |  |  |  |  | 1.2 |  |  | 1.4 |
Adjusted weighted-average shares outstanding |  |  |  |  | 251.3 |  |  | 257.7 |
Earnings per share | $ | 5.96 |  |  | $ | 3.01 |  |  | $ | 5.94 |  |  | $ | 3.00 |

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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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