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v3.19.1

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 ($) | Retained Earnings - Special Capital Reserve [member] USD ($) | 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 ($) | Others - Foreign Currency Translation Reserve [member] USD ($) | Others - Unrealized Gain/Loss from Available-for-sale Financial Assets [member] TWD ($) | Other - Unrealized Gain/Loss on Financial Assets at Fair Value Through Other Comprehensive Income [member] TWD ($) | Other - Unrealized Gain/Loss on Financial Assets at Fair Value Through Other Comprehensive Income [member] USD ($) | Others - Cash Flow Hedges Reserve [member] TWD ($) | Other - Gain (Loss) on Hedging Instruments [member] TWD ($) | Other - Gain (Loss) on Hedging Instruments [member] USD ($) | Others - Stock-Based Employee Compensation [member] TWD ($) | Others - Stock-Based Employee Compensation [member] USD ($) | Others - Total [member] TWD ($) | Others - Total [member] USD ($) | 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, 2015 | $ 1,194,970.1 |  | $ 259,303.8 |  | $ 56,300.2 |  | $ 177,640.6 |  |  |  | $ 688,989.0 |  | $ 866,629.6 |  | $ 11,039.9 |  | $ 734.8 |  |  | $ (0.6) |  |  |  |  | $ 11,774.1 |  | $ 1,194,007.7 |  | $ 962.4 |
Beginning balance, shares at Dec. 31, 2015 | shares |  |  | 25,930.3 | 25,930.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Legal capital reserve |  |  |  |  |  |  | 30,657.4 |  |  |  | (30,657.4) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends to shareholders-NT$6, NT$7 and NT$8 per share for the years ended December 31, 2016, 2017 and 2018 | (155,582.3) |  |  |  |  |  |  |  |  |  | (155,582.3) |  | (155,582.3) |  |  |  |  |  |  |  |  |  |  |  |  |  | (155,582.3) |  |  |
Total | (155,582.3) |  |  |  |  |  | 30,657.4 |  |  |  | (186,239.7) |  | (155,582.3) |  |  |  |  |  |  |  |  |  |  |  |  |  | (155,582.3) |  |  |
Net income(loss) | 331,797.3 |  |  |  |  |  |  |  |  |  | 331,713.7 |  | 331,713.7 |  |  |  |  |  |  |  |  |  |  |  |  |  | 331,713.7 |  | 83.6 |
Other comprehensive income (loss), net of income tax | (11,067.2) |  |  |  |  |  |  |  |  |  | (950.3) |  | (950.3) |  | (9,378.7) |  | (732.2) |  |  | 0.7 |  |  |  |  | (10,110.2) |  | (11,060.5) |  | (6.7) |
Total comprehensive income (loss) | 320,730.1 |  |  |  |  |  |  |  |  |  | 330,763.4 |  | 330,763.4 |  | (9,378.7) |  | (732.2) |  |  | 0.7 |  |  |  |  | (10,110.2) |  | 320,653.2 |  | 76.9 |
Disposal of investments accounted for using equity method | (56.1) |  |  |  | (56.1) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (56.1) |  |  |
Adjustments to share of changes in equities of associates | 21.2 |  |  |  | 21.2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 21.2 |  |  |
From share of changes in equities of subsidiaries |  |  |  |  | 7.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7.0 |  | (7.0) |
Decrease in non-controlling interests | (235.2) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (235.2) |
Effect of disposal of subsidiary | (2.0) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (2.0) |
Ending balance at Dec. 31, 2016 | 1,359,845.8 |  | $ 259,303.8 |  | 56,272.3 |  | 208,298.0 |  |  |  | 833,512.7 |  | 1,041,810.7 |  | 1,661.2 |  | 2.6 |  |  | 0.1 |  |  |  |  | 1,663.9 |  | 1,359,050.7 |  | 795.1 |
Ending balance, shares at Dec. 31, 2016 | shares |  |  | 25,930.3 | 25,930.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Legal capital reserve |  |  |  |  |  |  | 33,424.7 |  |  |  | (33,424.7) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends to shareholders-NT$6, NT$7 and NT$8 per share for the years ended December 31, 2016, 2017 and 2018 | (181,512.7) |  |  |  |  |  |  |  |  |  | (181,512.7) |  | (181,512.7) |  |  |  |  |  |  |  |  |  |  |  |  |  | (181,512.7) |  |  |
Total | (181,512.7) |  |  |  |  |  | 33,424.7 |  |  |  | (214,937.4) |  | (181,512.7) |  |  |  |  |  |  |  |  |  |  |  |  |  | (181,512.7) |  |  |
Net income(loss) | 345,039.0 |  |  |  |  |  |  |  |  |  | 344,998.3 |  | 344,998.3 |  |  |  |  |  |  |  |  |  |  |  |  |  | 344,998.3 |  | 40.7 |
Other comprehensive income (loss), net of income tax | (28,821.6) |  |  |  |  |  |  |  |  |  | (245.0) |  | (245.0) |  | (28,358.9) |  | (216.7) |  |  | 4.1 |  |  |  |  | (28,571.5) |  | (28,816.5) |  | (5.1) |
Total comprehensive income (loss) | 316,217.4 |  |  |  |  |  |  |  |  |  | 344,753.3 |  | 344,753.3 |  | (28,358.9) |  | (216.7) |  |  | 4.1 |  |  |  |  | (28,571.5) |  | 316,181.8 |  | 35.6 |
Adjustments to share of changes in equities of associates | (3.2) |  |  |  | 7.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (10.3) |  | (10.3) |  | (3.2) |  |  |
From share of changes in equities of subsidiaries |  |  |  |  | 11.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11.0 |  | (11.0) |
Donation from shareholders | 20.9 |  |  |  | 19.2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 19.2 |  | 1.7 |
Decrease in non-controlling interests | (113.7) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (113.7) |
Effect of disposal of subsidiary | (8.0) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (8.0) |
Ending balance (Previously stated under IAS 39 [member]) at Dec. 31, 2017 | 1,494,446.5 |  | $ 259,303.8 |  | 56,309.6 |  | 241,722.7 |  |  |  | 963,328.6 |  | 1,205,051.3 |  | (26,697.7) |  | (214.1) |  |  | 4.2 |  |  | (10.3) |  | (26,917.9) |  | 1,493,746.8 |  | 699.7 |
Ending balance (Effect of retrospective application) at Dec. 31, 2017 | 1,245.8 |  |  |  |  |  |  |  |  |  | 1,556.3 |  | 1,556.3 |  |  |  | $ 214.1 | $ (524.9) |  | $ (4.2) | $ 4.2 |  |  |  | (310.8) |  | 1,245.5 |  | 0.3 |
Ending balance (ADJUSTED BALANCE) at Dec. 31, 2017 | 1,495,692.3 |  | $ 259,303.8 |  | 56,309.6 |  | 241,722.7 |  |  |  | 964,884.9 |  | 1,206,607.6 |  | (26,697.7) |  |  | (524.9) |  |  | 4.2 |  | (10.3) |  | (27,228.7) |  | 1,494,992.3 |  | 700.0 |
Ending balance at Dec. 31, 2017 | 1,494,446.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending balance, shares (Previously stated under IAS 39 [member]) at Dec. 31, 2017 | shares |  |  | 25,930.3 | 25,930.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending balance, shares (ADJUSTED BALANCE) at Dec. 31, 2017 | shares |  |  | 25,930.3 | 25,930.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Legal capital reserve |  |  |  |  |  |  | 34,311.2 |  |  |  | (34,311.2) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Special capital reserve |  |  |  |  |  |  |  |  | $ 26,907.5 |  | (26,907.5) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends to shareholders-NT$6, NT$7 and NT$8 per share for the years ended December 31, 2016, 2017 and 2018 | (207,443.0) |  |  |  |  |  |  |  |  |  | (207,443.0) |  | (207,443.0) |  |  |  |  |  |  |  |  |  |  |  |  |  | (207,443.0) |  |  |
Total | (207,443.0) |  |  |  |  |  | 34,311.2 |  | 26,907.5 |  | (268,661.7) |  | (207,443.0) |  |  |  |  |  |  |  |  |  |  |  |  |  | (207,443.0) |  |  |
Net income(loss) | 363,106.2 | $ 11,862.3 |  |  |  |  |  |  |  |  | 363,052.7 |  | 363,052.7 |  |  |  |  |  |  |  |  |  |  |  |  |  | 363,052.7 |  | 53.5 |
Other comprehensive income (loss), net of income tax | 9,837.0 | 321.4 |  |  |  |  |  |  |  |  | (765.3) |  | (765.3) |  | 14,655.3 |  |  | (4,097.5) |  |  | 41.6 |  |  |  | 10,599.4 |  | 9,834.1 |  | 2.9 |
Total comprehensive income (loss) | 372,943.2 | 12,183.7 |  |  |  |  |  |  |  |  | 362,287.4 |  | 362,287.4 |  | 14,655.3 |  |  | (4,097.5) |  |  | 41.6 |  |  |  | 10,599.4 |  | 372,886.8 |  | 56.4 |
Disposal of investments in equity instruments at fair value through other comprehensive income |  |  |  |  |  |  |  |  |  |  | (1,193.1) |  | (1,193.1) |  |  |  |  | 1,193.1 |  |  |  |  |  |  | 1,193.1 |  |  |  |  |
Basis adjustment for loss on hedging instruments | (22.2) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (22.2) |  |  |  | (22.2) |  | (22.2) |  |  |
Adjustments to share of changes in equities of associates | 2.1 |  |  |  | (6.4) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8.5 |  | 8.5 |  | 2.1 |  |  |
From share of changes in equities of subsidiaries |  |  |  |  | 2.7 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.7 |  | (2.7) |
Donation from shareholders | 10.1 |  |  |  | 10.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.1 |  |  |
Decrease in non-controlling interests | (77.4) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (77.4) |
Ending balance at Dec. 31, 2018 | $ 1,661,105.1 | $ 54,266.8 | $ 259,303.8 | $ 8,471.2 | $ 56,316.0 | $ 1,839.8 | $ 276,033.9 | $ 9,017.8 | $ 26,907.5 | $ 879.0 | $ 1,057,317.5 | $ 34,541.6 | $ 1,360,258.9 | $ 44,438.4 | $ (12,042.4) | $ (393.4) |  | $ (3,429.3) | $ (112.0) |  | $ 23.6 | $ 0.8 | $ (1.8) | $ (0.1) | $ (15,449.9) | $ (504.7) | $ 1,660,428.8 | $ 54,244.7 | $ 676.3 | $ 22.1
Ending balance, shares at Dec. 31, 2018 | shares |  |  | 25,930.3 | 25,930.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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