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Consolidated Statements of Changes in Equity
shares in Thousands, $ in Thousands, $ in Thousands
TWD ($)
USD ($)
Share capital [member]
TWD ($)
shares
Share capital [member]
USD ($)
shares
Capital surplus [member]
TWD ($)
Capital surplus [member]
USD ($)
Legal reserve [member]
TWD ($)
Legal reserve [member]
USD ($)
Special reserve [member]
TWD ($)
Special reserve [member]
USD ($)
Unappropriated earnings [member]
TWD ($)
Unappropriated earnings [member]
USD ($)
Retained earnings [member]
TWD ($)
Retained earnings [member]
USD ($)
Exchange differences on translating foreign operations [member]
TWD ($)
Exchange differences on translating foreign operations [member]
USD ($)
Unrealized gain (loss) on available-for-sale financial assets [member]
TWD ($)
Unrealized gain (loss) on financial assets at fair value through other comprehensive income [member]
TWD ($)
Unrealized gain (loss) on financial assets at fair value through other comprehensive income [member]
USD ($)
Gain loss on hedging instrument [Member]
TWD ($)
Gain loss on hedging instrument [Member]
USD ($)
Other equity[member]
TWD ($)
Other equity[member]
USD ($)
Treasury shares [member]
TWD ($)
Treasury shares [member]
USD ($)
Equity Attributable to Owners of the Company [member]
TWD ($)
Equity Attributable to Owners of the Company [member]
USD ($)
Non-controlling interests [member]
TWD ($)
Non-controlling interests [member]
USD ($)
Balance at January 1 (Adjusted Balance [member]) at Dec. 31, 2017 $ 201,914,633   $ 87,380,787   $ 40,624,328   $ 16,765,066   $ 3,353,938   $ 54,485,857   $ 74,604,861   $ (6,733,659)   $ 135,517 $ 0       $ (6,598,142)   $ (7,292,513)   $ 188,719,321   $ 13,195,312  
Balance at January 1 at Dec. 31, 2017                             (6,733,659)                         13,195,312  
Beginning balance, shares at Dec. 31, 2017 | shares     8,738,079 8,738,079                                                  
Appropriation of earnings                                                          
Appropriated retained earnings 16,559,193           2,203,895   3,548,844                                        
Change from investments in associates accounted for using the equity method 1,500,100       1,411,899           88,201   88,201                         1,500,100      
Cash dividends paid from the capital surplus (10,795,980)       (10,795,980)                                         (10,795,980)      
Other changes in the capital surplus 872       872                                         872      
Net profit for the year 27,424,309                   26,220,721   26,220,721                         26,220,721   1,203,588  
Other comprehensive income (loss) for the year, net of income tax (852,632)                   (146,194)   (146,194)   562,794   (1,016,860)         (454,066)       (600,260)   (252,372)  
Total comprehensive income (loss) 26,571,677                   26,074,527   26,074,527   562,794   (1,016,860)         (454,066)       25,620,461   951,216  
Effect of the joint share exchange     $ (43,183,919)   117,693,658   (16,765,066)       (57,744,673)   (74,509,739)                                
Effect of the joint share exchange, shares | shares     (4,318,392) (4,318,392)                                                  
Buy-back of ordinary shares (71,302)                                             (71,302)   (71,302)      
Cancellation of treasury shares     $ (1,218,520)   (1,480,903)           (2,705,285)   (2,705,285)                     5,404,708          
Cash dividends received by subsidiaries from the Company 182,354       182,354                                         182,354      
Disposal of interest in associates and joint ventures accounted for using the equity method (1,055,118)       (1,408,495)           204,450   204,450   282,291   (133,364)         148,927       (1,055,118)      
Cancellation of treasury shares, shares | shares     (121,852) (121,852)                                                  
Differences between consideration and carrying amount arising from acquisition or disposal of subsidiaries 1,640,159       (1,142,856)                                         (1,142,856)   2,783,015  
Changes in percentage of ownership interest in subsidiaries (1,919,986)       (1,118,102)                                         (1,118,102)   (801,884)  
Issue of ordinary shares under employee share options 788,141 $ 23,879 $ 238,796   549,345                                         788,141      
Cash dividends distributed by subsidiaries (424,815)                                                     (424,815)  
Additional non-controlling interest arising on issue of employee share options by subsidiaries 697,187       (1,239,456)                                         (1,239,456)   1,936,643  
Disposal of investments in equity instruments at fair value through other comprehensive income                     400   400       (400)         (400)              
Balance at December 31 at Dec. 31, 2018 219,027,922   $ 43,217,144   143,276,664       3,353,938   20,403,477   23,757,415   (5,888,574)   (1,015,107)         (6,903,681)   (1,959,107)   201,388,435   17,639,487  
Ending balance, shares at Dec. 31, 2018 | shares     4,321,714 4,321,714                                                  
Appropriation of earnings                                                          
Legal reserve             2,203,895       (2,203,895)                                    
Special reserve                 3,548,844   (3,548,844)                                    
Cash dividends distributed by the Company (10,806,454)                   (10,806,454)   (10,806,454)                         (10,806,454)      
Appropriated retained earnings 14,310,735           1,697,489   3,944,915                                        
Change from investments in associates accounted for using the equity method 3,604       3,604                                         3,604      
Other changes in the capital surplus 1,070       1,070                                         1,070      
Net profit for the year 18,268,565                   17,060,591   17,060,591                         17,060,591   1,207,974  
Other comprehensive income (loss) for the year, net of income tax (4,370,611)                   (280,461)   (280,461)   (4,874,110)   1,216,165         (3,657,945)       (3,938,406)   (432,205)  
Total comprehensive income (loss) 13,897,954                   16,780,130   16,780,130   (4,874,110)   1,216,165         (3,657,945)       13,122,185   775,769  
Issue of ordinary shares for capital increase by cash (10,806,454)           2,203,895   3,548,844   (16,559,193)   (10,806,454)                         (10,806,454)      
Cash dividends received by subsidiaries from the Company 182,354       182,354                                         182,354      
Disposal of interest in investments accounted for using the equity method (73,884)       (75,276)           1,392   1,392                         (73,884)      
Differences between consideration and carrying amount arising from acquisition or disposal of subsidiaries (7,114,703)       (2,779,613)                                         (2,779,613)   (4,335,090)  
Changes in percentage of ownership interest in subsidiaries (3,977,486)       (1,960,167)                                         (1,960,167)   (2,017,319)  
Issue of ordinary shares under employee share options 1,225,163   $ 88,143 $ 8,814 1,137,020                                         1,225,163      
Cash dividends distributed by subsidiaries (360,245)                                                     (360,245)  
Additional non-controlling interest arising on issue of employee share options by subsidiaries 797,017       (875,293)                                         (875,293)   1,672,310  
Disposal of investments in equity instruments at fair value through other comprehensive income                     404,156   404,156         (404,156)       (404,156)              
Balance at December 31 at Dec. 31, 2019 212,802,312   $ 43,305,287   138,910,363   2,203,895   6,902,782   21,029,962   30,136,639   (10,762,684) $ (383,286)   (203,098)       (10,965,782)   (1,959,107)   199,427,400   13,374,912 $ 476,315
Ending balance, shares at Dec. 31, 2019 | shares     4,330,528 4,330,528                                                  
Appropriation of earnings                                                          
Legal reserve             1,697,489       (1,697,489)                                    
Special reserve                 3,944,915   (3,944,915)                                    
Cash dividends distributed by the Company (8,668,331)                   (8,668,331)   (8,668,331)                         (8,668,331)      
Appropriated retained earnings (8,668,331)           1,697,489   3,944,915   (14,310,735)   (8,668,331)                         (8,668,331)      
Change from investments in associates accounted for using the equity method 22,774       22,774                                         22,774      
Other changes in the capital surplus 1,608       1,608                                         1,608   0  
Net profit for the year 28,651,900 1,020,366                 26,970,580   26,970,580                         26,970,580   1,681,320  
Other comprehensive income (loss) for the year, net of income tax 495,313 17,640                 (469,748)   (469,748)   (879,255)     2,248,414   $ (429,265)   939,894       470,146   25,167  
Total comprehensive income (loss) 29,147,213 1,038,006                 26,500,832   26,500,832   (879,255)     2,248,414   (429,265)   939,894       27,440,726   1,706,487  
Cash dividends received by subsidiaries from the Company         145,741                                         145,741      
Disposal of interest in investments accounted for using the equity method 2,313       2,199           (980)   (980)         1,094       1,094       2,313      
Differences between consideration and carrying amount arising from acquisition or disposal of subsidiaries (135,898)       (13,502)                                         (13,502)   (122,396)  
Changes in percentage of ownership interest in subsidiaries (4,128,788)       (780,533)           (2,760,175)   (2,760,175)                         (3,540,708)   (588,080)  
Issue of ordinary shares under employee share options 1,799,425   $ 21,064 $ 210,633 1,588,792                                         1,799,425      
Cash dividends distributed by subsidiaries (346,774)                                                     (346,774)  
Additional non-controlling interest arising on issue of employee share options by subsidiaries 1,089,565       (109,892)           (392,447)   (392,447)                         (502,339)   1,591,904  
Disposal of investments in equity instruments at fair value through other comprehensive income                     18,508   18,508         $ (18,508)       (18,508)              
Balance at December 31 at Dec. 31, 2020 $ 231,731,160 $ 8,252,534 $ 43,515,920 $ 1,549,712 $ 139,767,550 $ 4,977,477 $ 3,901,384 $ 138,938 $ 10,847,697 $ 386,314 $ 30,084,965 $ 1,071,402 $ 44,834,046 $ 1,596,654 $ (11,641,939) $ (414,599) $ 2,027,902   $ 72,219 $ (429,265) $ (15,287) $ (10,043,302) $ (357,667) $ (1,959,107) $ (69,769) $ 216,115,107 $ 7,696,407 $ 15,616,053 $ 556,127
Ending balance, shares at Dec. 31, 2020 | shares     4,351,592 4,351,592