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Disposal of Subsidiaries - Summary of Analysis of Assets and Liabilities on Date Control was Lost (Detail) - SPIL Cayman Holdings Limited [member] $ in Thousands, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 TWD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 TWD ($) | Dec. 31, 2021 USD ($)
Current assets |  |  |  |
Cash and cash equivalents | $ 2,625,715 | $ 94,655 | $ 200,347 |
Inventories | 2,284,880 | 82,368 | 239,865 |
Other current assets | 1,215,992 | 43,835 | 111,913 |
Trade and other receivables | 4,505,531 |  | 318,425 | $ 162,420
Non-Current Assets |  |  |  |
Property, plant and equipment | 16,693,129 | 601,770 | 7,546,413 |
Right-of-use assets | 181,855 | 6,556 | 812,861 |
Investment property | 787,250 | 28,379 |  |
Goodwill | 310,711 | 11,201 |  |
Deferred tax assets | 659,972 | 23,792 | 298,217 |
Other non-current assets | 308,500 | 11,122 | 43,482 |
Current Liabilities |  |  |  |
Short-term borrowings | (2,443,005) | (88,068) |  |
Trade and other payables | (5,949,592) | (214,477) | (1,739,330) |
Current portion of long-term borrowings |  |  | (1,746,000) |
Other current liabilities | (647,027) | (23,325) | (24,564) |
Non-Current Liabilities |  |  |  |
Long-term borrowings |  |  | (2,947,682) |
Deferred tax liabilities | (200,899) | (7,242) | (796) |
Lease liabilities – non-current | (8,150) | (294) |  |
Other non-current liabilities | (156,863) | (5,655) |  |
Net assets disposed of | $ 20,167,999 | $ 727,037 | $ 3,113,151 |

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