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Earnings per Share (Tables) | 9 Months Ended
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Sep. 30, 2021
Earnings Per Share [Abstract] |
Schedule of computations of basic and diluted earnings per share |
| Three Months Ended September 30, |  | Nine Months Ended September 30,
2021 |  | 2020 | 2021 |  | 2020
(in millions, except per share amounts)
Numerator: |  |  |  |  |  |  |
Net income | $ | 1,031 |  |  | $ | (140) |  |  | $ | 2,059 |  |  | $ | 1,357 |
Denominator: |  |  |  |  |  |  |
Basic: Weighted-average common shares outstanding | 116.4 |  |  | 123.0 |  |  | 118.2 |  |  | 124.8 |
Effect of potentially dilutive nonqualified stock options and other share-based awards | 2.8 |  |  | 1.9 |  |  | 2.7 |  |  | 1.7 |
Diluted: Weighted-average common shares outstanding | 119.2 |  |  | 124.9 |  |  | 120.9 |  |  | 126.5 |
Earnings per share: |  |  |  |  |  |  |
Basic | $ | 8.86 |  |  | $ | (1.14) |  |  | $ | 17.42 |  |  | $ | 10.87 |
Diluted | $ | 8.65 |  |  | $ | (1.14) |  | (1) | $ | 17.03 |  |  | $ | 10.73 |
(1) Diluted shares used in this calculation represent basic shares due to the net loss. Using actual diluted shares would result in anti-dilution.

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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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