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Business Combinations - Summary of Assets Acquired and Liabilities Assumed at the Date of Acquisition (Detail)
$ in Thousands
Dec. 31, 2022
TWD ($)
FAFG [member]  
Disclosure of detailed information about business combination [Line Items]  
Cash and cash equivalents $ 2,349,164
Trade and other receivables 4,434,296
Inventories 4,836,819
Property, plant and equipment 2,882,720
Intangible assets 1,541,155
Others 1,919,118
Trade and other payables (4,575,720)
Borrowings and bonds payables (356,417)
Others (3,155,051)
Fair value of identifiable net assets acquired 9,876,084
ITGEU  
Disclosure of detailed information about business combination [Line Items]  
Cash and cash equivalents 68,719
Trade and other receivables 41,832
Property, plant and equipment 94
Intangible assets 32
Others 2,828
Trade and other payables (29,165)
Others (858)
Fair value of identifiable net assets acquired 83,482
SER [Member]  
Disclosure of detailed information about business combination [Line Items]  
Cash and cash equivalents 18,850
Trade and other receivables 40,671
Inventories 375,912
Property, plant and equipment 37,672
Intangible assets 368
Others 186,377
Trade and other payables (214,883)
Others (227,048)
Fair value of identifiable net assets acquired $ 217,919