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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2023
Earnings Per Share [Abstract] |
Schedule of Calculation for Basic and Diluted Earnings per Share | The calculation of basic and diluted EPS for the periods ended September 30 is as follows:
(in millions, except per share amounts) | Three Months |  | Nine Months
| 2023 |  | 2022 |  | 2023 |  | 2022
Amounts attributable to S&P Global Inc. common shareholders: |  |  |  |  |  |  |
Net income | $ | 742 |  |  | $ | 608 |  |  | $ | 2,047 |  |  | $ | 2,815 |
Basic weighted-average number of common shares outstanding | 317.5 |  |  | 329.6 |  |  | 319.4 |  |  | 314.5 |
Effect of stock options and other dilutive securities | 0.5 |  |  | 1.3 |  |  | 0.5 |  |  | 1.2 |
Diluted weighted-average number of common shares outstanding | 318.0 |  |  | 330.9 |  |  | 319.9 |  |  | 315.7 |
Earnings per share attributable to S&P Global Inc. common shareholders: |  |  |  |  |  |  |
Net income: |  |  |  |  |  |  |
Basic | $ | 2.34 |  |  | $ | 1.84 |  |  | $ | 6.41 |  |  | $ | 8.95 |
Diluted | $ | 2.33 |  |  | $ | 1.84 |  |  | $ | 6.40 |  |  | $ | 8.91 |

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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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