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Consolidated Statements of Changes in Equity shares in Millions, $ in Millions, $ in Millions | TWD ($) | USD ($) | Capital Stock - Common Stock [member] TWD ($) shares | Capital Stock - Common Stock [member] USD ($) shares | Capital Surplus [member] TWD ($) | Capital Surplus [member] USD ($) | Retained Earnings - Legal Capital Reserve [member] TWD ($) | Retained Earnings - Legal Capital Reserve [member] USD ($) | Retained Earnings - Special Capital Reserve [member] TWD ($) | Retained Earnings - Unappropriated Earnings [member] TWD ($) | Retained Earnings - Unappropriated Earnings [member] USD ($) | Retained Earnings [member] TWD ($) | Retained Earnings [member] USD ($) | Others - Foreign Currency Translation Reserve [member] TWD ($) | Others - Foreign Currency Translation Reserve [member] USD ($) | Other - Unrealized Gain (Loss) on Financial Assets at Fair Value Through Other Comprehensive Income [member] TWD ($) | Other - Unrealized Gain (Loss) on Financial Assets at Fair Value Through Other Comprehensive Income [member] USD ($) | Other - Gain (Loss) on Hedging Instruments [member] TWD ($) | Other - Gain (Loss) on Hedging Instruments [member] USD ($) | Others - Unearned Stock-Based Employee Compensation [member] TWD ($) | Others - Unearned Stock-Based Employee Compensation [member] USD ($) | Others - Total [member] TWD ($) | Others - Total [member] USD ($) | Treasury shares [member] TWD ($) | Total Equity Attributable to Shareholders of the Parent [member] TWD ($) | Total Equity Attributable to Shareholders of the Parent [member] USD ($) | Non-controlling Interests [member] TWD ($) | Non-controlling Interests [member] USD ($)
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Beginning balance at Dec. 31, 2020 | $ 1,835,763.8 |  | $ 259,303.8 |  | $ 56,347.2 |  | $ 311,147.0 |  | $ 42,259.1 | $ 1,220,434.0 |  | $ 1,573,840.1 |  | $ (57,001.6) |  | $ 2,321.8 |  |  |  |  |  | $ (54,679.8) |  |  | $ 1,834,811.3 |  | $ 952.5 |
Beginning balance, shares at Dec. 31, 2020 | shares |  |  | 25,930.3 | 25,930.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Special capital reserve |  |  |  |  |  |  |  |  | 17,045.1 | (17,045.1) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends to shareholders | (278,751.6) |  |  |  |  |  |  |  |  | (278,751.6) |  | (278,751.6) |  |  |  |  |  |  |  |  |  |  |  |  | (278,751.6) |  |  |
Total | (278,751.6) |  |  |  |  |  |  |  | 17,045.1 | (295,796.7) |  | (278,751.6) |  |  |  |  |  |  |  |  |  |  |  |  | (278,751.6) |  |  |
Net income | 592,880.6 |  |  |  |  |  |  |  |  | 592,359.2 |  | 592,359.2 |  |  |  |  |  |  |  |  |  |  |  |  | 592,359.2 |  | 521.4 |
Other comprehensive income (loss), net of income tax | (7,619.4) |  |  |  |  |  |  |  |  | 167.5 |  | 167.5 |  | (6,301.7) |  | (1,559.8) |  | $ 72.1 |  |  |  | (7,789.4) |  |  | (7,621.9) |  | 2.5 |
Total comprehensive income (loss) | 585,261.2 |  |  |  |  |  |  |  |  | 592,526.7 |  | 592,526.7 |  | (6,301.7) |  | (1,559.8) |  | 72.1 |  |  |  | (7,789.4) |  |  | 584,737.3 |  | 523.9 |
Disposal of investments in equity instruments at fair value through other comprehensive income |  |  |  |  |  |  |  |  |  | 187.7 |  | 187.7 |  |  |  | (187.7) |  |  |  |  |  | (187.7) |  |  |  |  |  |
Basis adjustment for gain (loss) on hedging instruments | 48.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 48.5 |  |  |  | 48.5 |  |  | 48.5 |  |  |
Adjustments to share of changes in equities of associates | 4.8 |  |  |  | 4.8 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.8 |  |  |
From difference between the consideration received and the carrying amount of the subsidiaries' net assets during actual disposal | 9,451.8 |  |  |  | 8,406.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8,406.3 |  | 1,045.5 |
From share of changes in equities of subsidiaries |  |  |  |  | (7.9) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (7.9) |  | 7.9 |
Donation from shareholders | 11.2 |  |  |  | 11.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11.1 |  | 0.1 |
Effect of acquisition of subsidiary | 0.2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.2 |
Decrease in non-controlling interests | (107.4) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (107.4) |
Ending balance at Dec. 31, 2021 | 2,151,682.5 |  | $ 259,303.8 |  | 64,761.5 |  | 311,147.0 |  | 59,304.2 | 1,517,351.7 |  | 1,887,802.9 |  | (63,303.3) |  | 574.3 |  | 120.6 |  |  |  | (62,608.4) |  |  | 2,149,259.8 |  | 2,422.7 |
Ending balance, shares at Dec. 31, 2021 | shares |  |  | 25,930.3 | 25,930.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Special capital reserve |  |  |  |  |  |  |  |  | (56,149.9) | 56,149.9 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends to shareholders | (285,234.2) |  |  |  |  |  |  |  |  | (285,234.2) |  | (285,234.2) |  |  |  |  |  |  |  |  |  |  |  |  | (285,234.2) |  |  |
Total | (285,234.2) |  |  |  |  |  |  |  | (56,149.9) | (229,084.3) |  | (285,234.2) |  |  |  |  |  |  |  |  |  |  |  |  | (285,234.2) |  |  |
Net income | 993,294.7 |  |  |  |  |  |  |  |  | 992,923.4 |  | 992,923.4 |  |  |  |  |  |  |  |  |  |  |  |  | 992,923.4 |  | 371.3 |
Other comprehensive income (loss), net of income tax | 42,430.1 |  |  |  |  |  |  |  |  | (49.5) |  | (49.5) |  | 51,560.0 |  | (10,327.4) |  | 1,411.6 |  |  |  | 42,644.2 |  |  | 42,594.7 |  | (164.6) |
Total comprehensive income (loss) | 1,035,724.8 |  |  |  |  |  |  |  |  | 992,873.9 |  | 992,873.9 |  | 51,560.0 |  | (10,327.4) |  | 1,411.6 |  |  |  | 42,644.2 |  |  | 1,035,518.1 |  | 206.7 |
Treasury stock acquired | (871.6) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (871.6) | (871.6) |  |  |
Treasury stock retired |  |  | $ (13.9) |  | (3.0) |  |  |  |  | (854.7) |  | (854.7) |  |  |  |  |  |  |  |  |  |  |  | $ 871.6 |  |  |  |
Treasury stock retired, shares | shares |  |  | (1.4) | (1.4) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based payment arrangements | 266.7 |  | $ 13.9 |  | 438.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (185.2) |  | (185.2) |  |  | 266.7 |  |  |
Share-based payment arrangements, shares | shares |  |  | 1.4 | 1.4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal of investments in equity instruments at fair value through other comprehensive income |  |  |  |  |  |  |  |  |  | 303.3 |  | 303.3 |  |  |  | (303.3) |  |  |  |  |  | (303.3) |  |  |  |  |  |
Basis adjustment for gain (loss) on hedging instruments | (52.9) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (52.9) |  |  |  | (52.9) |  |  | (52.9) |  |  |
Adjustments to share of changes in equities of associates | 4.6 |  |  |  | 4.6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.6 |  |  |
From share of changes in equities of subsidiaries | 16,466.3 |  |  |  | 4,116.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,116.0 |  | 12,350.3 |
Donation from shareholders | 13.2 |  |  |  | 13.2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13.2 |  |  |
Decrease in non-controlling interests | (167.0) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (167.0) |
Ending balance at Dec. 31, 2022 | 2,917,832.4 |  | $ 259,303.8 |  | 69,330.3 |  | 311,147.0 |  | 3,154.3 | 2,280,589.9 |  | 2,594,891.2 |  | (11,743.3) |  | (10,056.4) |  | 1,479.3 |  | (185.2) |  | (20,505.6) |  |  | 2,903,019.7 |  | 14,812.7 |
Ending balance, shares at Dec. 31, 2022 | shares |  |  | 25,930.3 | 25,930.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Special capital reserve |  |  |  |  |  |  |  |  | (3,154.3) | 3,154.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends to shareholders | (317,663.2) |  |  |  |  |  |  |  |  | (317,663.2) |  | (317,663.2) |  |  |  |  |  |  |  |  |  |  |  |  | (317,663.2) |  |  |
Total | (317,663.2) |  |  |  |  |  |  |  | $ (3,154.3) | (314,508.9) |  | (317,663.2) |  |  |  |  |  |  |  |  |  |  |  |  | (317,663.2) |  |  |
Net income | 851,027.7 | $ 27,793.2 |  |  |  |  |  |  |  | 851,740.0 |  | 851,740.0 |  |  |  |  |  |  |  |  |  |  |  |  | 851,740.0 |  | (712.3) |
Other comprehensive income (loss), net of income tax | (8,813.7) | (287.8) |  |  |  |  |  |  |  | (484.9) |  | (484.9) |  | (13,573.5) |  | 6,108.4 |  | (38.2) |  |  |  | (7,503.3) |  |  | (7,988.2) |  | (825.5) |
Total comprehensive income (loss) | 842,214.0 | 27,505.4 |  |  |  |  |  |  |  | 851,255.1 |  | 851,255.1 |  | (13,573.5) |  | 6,108.4 |  | (38.2) |  |  |  | (7,503.3) |  |  | 843,751.8 |  | (1,537.8) |
Disposal of investments accounted for using equity method | (18.5) |  |  |  | (18.1) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (18.1) |  | (0.4) |
Employee restricted shares retired | 4.6 |  | $ (4.2) |  | 4.2 |  |  |  |  | 4.6 |  | 4.6 |  |  |  |  |  |  |  |  |  |  |  |  | 4.6 |  |  |
Employee restricted shares retired, shares | shares |  |  | (0.4) | (0.4) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based payment arrangements | 477.7 |  | $ 21.1 |  | 564.9 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (108.3) |  | (108.3) |  |  | 477.7 |  |  |
Share-based payment arrangements, shares | shares |  |  | 2.1 | 2.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal of investments in equity instruments at fair value through other comprehensive income |  |  |  |  |  |  |  |  |  | 151.9 |  | 151.9 |  |  |  | (151.9) |  |  |  |  |  | (151.9) |  |  |  |  |  |
Basis adjustment for gain (loss) on hedging instruments | (45.2) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (45.2) |  |  |  | (45.2) |  |  | (45.2) |  |  |
From share of changes in equities of subsidiaries | 11,244.7 |  |  |  | (21.3) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (21.3) |  | 11,266.0 |
Donation from shareholders | 16.4 |  |  |  | 16.4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 16.4 |  |  |
Decrease in non-controlling interests | (196.4) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (196.4) |
Ending balance at Dec. 31, 2023 | $ 3,453,866.5 | $ 112,797.8 | $ 259,320.7 | $ 8,469.0 | $ 69,876.4 | $ 2,282.1 | $ 311,147.0 | $ 10,161.5 |  | $ 2,817,492.6 | $ 92,014.8 | $ 3,128,639.6 | $ 102,176.3 | $ (25,316.8) | $ (826.8) | $ (4,099.9) | $ (133.9) | $ 1,395.9 | $ 45.6 | $ (293.5) | $ (9.6) | $ (28,314.3) | $ (924.7) |  | $ 3,429,522.4 | $ 112,002.7 | $ 24,344.1 | $ 795.1
Ending balance, shares at Dec. 31, 2023 | shares |  |  | 25,932.0 | 25,932.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The increase (decrease) in equity resulting from share-based payment transactions. [Refer: Equity] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 106 -Subparagraph d -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_106_d_iii&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The increase (decrease) in equity resulting from transactions with owners. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 106 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_106_d&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The increase (decrease) in equity resulting from treasury share transactions. [Refer: Equity; Treasury shares] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 106 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_106_d&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The number of shares that have been authorised and issued, reduced by treasury shares held. [Refer: Treasury shares] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 79 -Subparagraph a -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_79_a_iv&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of income and expense (including reclassification adjustments) that is not recognised in profit or loss as required or permitted by IFRSs. [Refer: IFRSs [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2023-01-01 -Paragraph B12 -Subparagraph b -Clause viii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2023-en-r&anchor=para_B12_b_viii&doctype=Appendix&subtype=B -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 81A -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_81A_b&doctype=Standard -URIDate 2023-03-23 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 91 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_91_a&doctype=Standard -URIDate 2023-03-23 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 106 -Subparagraph d -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_106_d_ii&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The total of income less expenses from continuing and discontinued operations, excluding the components of other comprehensive income. [Refer: Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2023-01-01 -Paragraph 18 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2023-en-r&anchor=para_18_b&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 1 -IssueDate 2023-01-01 -Paragraph 32 -Subparagraph a -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2023-en-r&anchor=para_32_a_ii&doctype=Standard -URIDate 2023-03-23 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 1 -IssueDate 2023-01-01 -Paragraph 24 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2023-en-r&anchor=para_24_b&doctype=Standard -URIDate 2023-03-23 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2023-01-01 -Paragraph 28 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2023-en-r&anchor=para_28_b&doctype=Standard -URIDate 2023-03-23 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2023-01-01 -Paragraph 23 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2023-en-r&anchor=para_23&doctype=Standard -URIDate 2023-03-23 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 12 -IssueDate 2023-01-01 -Paragraph B10 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2023-en-r&anchor=para_B10_b&doctype=Appendix&subtype=B -URIDate 2023-03-23 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 17 -IssueDate 2023-01-01 -Paragraph 113 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2023-en-r&anchor=para_113_b&doctype=Standard -URIDate 2023-03-23 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 81A -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_81A_a&doctype=Standard -URIDate 2023-03-23 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 106 -Subparagraph d -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_106_d_i&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition Decrease increase through tax on share based payment transactions shares. + References No definition available. + Details
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- Definition From difference between the consideration received and the carrying amount of the subsidiaries' net assets during actual disposal. + References No definition available. + Details
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- Definition Increase decrease through basis adjustment for loss on hedging instruments. + References No definition available. + Details
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- Definition Increase (decrease) through change in associates and joint venture. + References No definition available. + Details
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- Definition Increase (decrease) through disposal of investments accounted for using equity method. + References No definition available. + Details
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- Definition Increase (decrease) through disposal of investments in equity instruments at fair value through other comprehensive income. + References No definition available. + Details
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- Definition Increase (decrease) through transfer to special capital reserve. + References No definition available. + Details
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