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Business Combinations - Summary of Assets Acquired and Liabilities Assumed at the Date of Acquisition (Detail) - Dec. 31, 2019 $ in Thousands, $ in Thousands | TWD ($) | USD ($)
--- | --- | ---
SPIL [member] |  |
Disclosure of detailed information about business combination [Line Items] |  |
Cash and cash equivalents | $ 20,088,970 |
Trade and other receivables | 15,840,649 |
Inventories | 5,693,644 |
Property, plant and equipment | 81,985,622 |
Intangible assets | 31,354,386 |
Others | 24,945,922 |
Trade and other payables | (19,755,598) |
Borrowings and bonds payables | (24,157,174) |
Others | (3,963,201) |
Fair value of identifiable net assets acquired | 132,033,220 |
AMPI [member] |  |
Disclosure of detailed information about business combination [Line Items] |  |
Cash and cash equivalents | 349,496 | $ 11,685
Trade and other receivables | 371,144 | 12,409
Inventories | 403,887 | 13,503
Property, plant and equipment | 683,207 | 22,842
Intangible assets | 128,900 | 4,310
Others | 237,766 | 7,949
Trade and other payables | (224,295) | (7,499)
Borrowings and bonds payables | (951,519) | (31,813)
Others | (148,723) | (4,972)
Fair value of identifiable net assets acquired | 849,863 | 28,414
ASEEE [member] |  |
Disclosure of detailed information about business combination [Line Items] |  |
Cash and cash equivalents | 23,197 | 776
Trade and other receivables | 5,732 | 192
Inventories | 11,033 | 369
Property, plant and equipment | 1,361,572 | 45,522
Intangible assets | 290,757 | 9,721
Others | 317,888 | 10,628
Trade and other payables | (133,278) | (4,456)
Borrowings and bonds payables | (1,371,395) | (45,851)
Others | (290,273) | (9,705)
Fair value of identifiable net assets acquired | 215,233 | 7,196
UGPL [Member] |  |
Disclosure of detailed information about business combination [Line Items] |  |
Cash and cash equivalents | 108,718 | 3,635
Trade and other receivables | 58,713 | 1,963
Inventories | 229 | 8
Property, plant and equipment | 525,048 | 17,554
Intangible assets | 11,704 | 391
Others | 99,112 | 3,314
Trade and other payables | (217,887) | (7,285)
Borrowings and bonds payables | (190,737) | (6,377)
Others | (63,708) | (2,130)
Fair value of identifiable net assets acquired | $ 331,192 | $ 11,073

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