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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2023
Earnings Per Share [Abstract] |
Computation of Basic and Diluted Earnings Per Share | Basic and diluted earnings per share are as follows (in millions, except share data):
| Three Months Ended March 31, |
| 2023 |  |  | 2022 |
Numerator: |  |  |  |  |
Net income attributable to NOW Inc. | $ | 31 |  |  | $ | 30 |
Less: net income attributable to participating securities |  | — |  |  |  | — |
Net income attributable to NOW Inc. stockholders | $ | 31 |  |  | $ | 30 |
Denominator: |  |  |  |  |
Weighted average basic common shares outstanding |  | 110,006,858 |  |  |  | 110,602,943 |
Effect of dilutive securities |  | 1,209,998 |  |  |  | 219,574 |
Weighted average diluted common shares outstanding |  | 111,216,856 |  |  |  | 110,822,517 |
Earnings per share attributable to NOW Inc. stockholders: |  |  |  |  |
Basic | $ | 0.28 |  |  | $ | 0.27 |
Diluted | $ | 0.28 |  |  | $ | 0.27 |

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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 https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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