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v3.19.1

Equity - Noncontrolling Interests (Detail) $ in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 TWD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 TWD ($) | Dec. 31, 2016 TWD ($)
Beginning balance | $ 369,410 |  | $ 366,928 | $ 369,339
Effect of retrospective application of IFRS 9 |  |  | 883 |
Profit Allocated to Noncontrolling Interests | 1,024 | $ 33 | 1,172 | 1,141
Unrealized gain or loss on available-for-sale financial assets |  |  | 605 | (721)
Income tax relating to unrealized gain and loss on available-for-sale financial assets | 0 |  | (3) | (2)
Income tax relating to remeasurements of defined benefit pension plans | 243 |  | 344 | 347
Cash dividends distributed by subsidiaries | (958) |  | (942) | (710)
Partial disposal of interests in subsidiaries | 1,175 |  | 106 | 83
Other changes in additional paid-in capital of subsidiaries |  |  | 0 |
Share-based payment transactions of subsidiaries | 53 |  | 22 | 17
Net increase in noncontrolling interests | 294 |  | 223 | 5
Ending balance | 384,529 | 12,562 | 369,410 | 366,928
Noncontrolling interests [Member] |  |  |  |
Beginning balance | 8,474 |  | 6,272 | 5,065
Effect of retrospective application of IFRS 9 | (4) |  | 0 | 0
Profit Allocated to Noncontrolling Interests | 1,024 |  | 1,172 | 1,141
Exchange differences arising from the translation of the net investment in foreign operations | (3) |  | (12) | (41)
Unrealized gain or loss on financial assets at FVOCI | (1) |  | 0 | 0
Unrealized gain or loss on available-for-sale financial assets | 0 |  | (2) | 0
Income tax relating to unrealized gain and loss on available-for-sale financial assets | 0 |  | 1 | 0
Remeasurements of defined benefit pension plans | (9) |  | (8) | (18)
Income tax relating to remeasurements of defined benefit pension plans | 3 |  | 0 | 3
Share of other comprehensive income or loss of associates accounted for using equity method | 1 |  | (2) | (1)
Cash dividends distributed by subsidiaries | (958) |  | (942) | (710)
Partial disposal of interests in subsidiaries | 349 |  | 29 | 25
Change in additional paid-in capital for not proportionately participating in the capital increase of subsidiaries | 700 |  | 1,750 | 786
Other changes in additional paid-in capital of subsidiaries |  |  | 0 |
Share-based payment transactions of subsidiaries | 42 |  | 20 | 17
Net increase in noncontrolling interests | 239 |  | 196 | 5
Ending balance | 9,857 | $ 322 | 8,474 | 6,272
As Adjusted [Member] | Noncontrolling interests [Member] |  |  |  |
Beginning balance | $ 8,470 |  | 6,272 | 5,065
Ending balance |  |  | $ 8,470 | $ 6,272

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