XML 190 R174.htm IDEA: XBRL DOCUMENT v3.21.1
Equity - Noncontrolling Interests (Detail)
$ in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2020
TWD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
TWD ($)
Dec. 31, 2018
TWD ($)
Beginning balance $ 384,272   $ 384,529 $ 382,124
Profit Allocated to Noncontrolling Interests 1,285 $ 46 974 1,024
Income tax relating to remeasurements of defined benefit pension plans (239)   (305) 243
Cash dividends distributed by subsidiaries (775)   (710) (958)
Partial disposal of interests in subsidiaries       1,175
Share-based payment transactions of subsidiaries 89   21 53
Change in additional paid-in capital from investments in associates and joint ventures accounted for using equity method (2)      
Net increase (decrease) in noncontrolling interests 476   (1) 294
Ending balance 387,273 13,791 384,272 384,529
Noncontrolling interests [Member]        
Beginning balance 10,115   9,857 8,470
Effect of retrospective application of IFRS 16     (20)  
Profit Allocated to Noncontrolling Interests 1,285   974 1,024
Exchange differences arising from the translation of the net investment in foreign operations (14)   8 (3)
Unrealized gain or loss on financial assets at FVOCI (3)   (26) (1)
Remeasurements of defined benefit pension plans 17   15 (9)
Income tax relating to remeasurements of defined benefit pension plans (3)   (3) 3
Share of other comprehensive income (loss) of associates and joint ventures accounted for using equity method (1)   (1) 1
Cash dividends distributed by subsidiaries (775)   (710) (958)
Partial disposal of interests in subsidiaries 0   0 349
Share-based payment transactions of subsidiaries 63   22 42
Change in additional paid-in capital for not proportionately participating in the capital increase of subsidiaries 0   0 700
Change in additional paid-in capital from investments in associates and joint ventures accounted for using equity method (2)   0 0
Other changes in additional paid-in capital of subsidiaries 0   0 0
Net increase (decrease) in noncontrolling interests 476   (1) 239
Ending balance 11,158 $ 397 10,115 9,857
As Adjusted [Member] | Noncontrolling interests [Member]        
Beginning balance $ 10,115   9,837 8,470
Ending balance     $ 10,115 $ 9,837