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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2024
Earnings per share [abstract] |
Net Income and Weighted Average Number of Common Stocks Used in Calculation of Earnings Per Share | Net income and weighted average number of common stocks used in the calculation of earnings per share were as follows: Net Income
|  | Year Ended December 31 |
|  | 2022 |  |  | 2023 |  |  | 2024 |
|  | NT$ |  |  | NT$ |  |  | NT$ |
|  | (In Millions) |
Net income used to compute the basic earnings per share |  |  |  |  |  |  |  |  |
Net income attributable to the parent |  | $ | 36,358 |  |  | $ | 36,958 |  |  | $ | 37,189 |
Assumed conversion of all dilutive potential common stocks |  |  |  |  |  |  |  |  |
Employee stock options and employee compensation of subsidiaries |  |  | (7 | ) |  |  | (5 | ) |  |  | (3 | )
Net income used to compute the diluted earnings per share |  | $ | 36,351 |  |  | $ | 36,953 |  |  | $ | 37,186 |
Weighted Average Number of Common Stocks (Millions Shares)
|  | Year Ended December 31 |
|  | 2022 |  |  | 2023 |  |  | 2024 |
Weighted average number of common stocks used to compute the basic earnings per share |  |  | 7,757 |  |  |  | 7,757 |  |  |  | 7,757 |
Assumed conversion of all dilutive potential common stocks |  |  |  |  |  |  |  |  |
Employee compensation |  |  | 8 |  |  |  | 8 |  |  |  | 18 |
Weighted average number of common stocks used to compute the diluted earnings per share |  |  | 7,765 |  |  |  | 7,765 |  |  |  | 7,775 |
As Chunghwa may settle the employee compensation in shares or cash, Chunghwa shall presume that it will be settled in shares and take those shares into consideration when calculating the weighted average number of outstanding shares used in the calculation of diluted EPS if the shares have a dilutive effect. The dilutive effect of the shares needs to be considered until the approval of the number of shares to be distributed to employees as compensation in the following year.

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- Definition The disclosure of earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2024-01-01 -Paragraph 66 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2024-en-r&anchor=para_66&doctype=Standard -URIDate 2024-03-27 + Details
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