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Contents of Significant Accounts - Inventories, Net (Detail)
$ in Thousands, $ in Thousands
Dec. 31, 2023
TWD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
TWD ($)
Classes Of Inventories [Abstract]      
Raw materials $ 10,995,569   $ 6,335,428
Supplies and spare parts 6,443,172   7,161,216
Work in process 15,560,517   14,897,926
Finished goods 2,713,300   2,675,390
Total $ 35,712,558 $ 1,166,315 $ 31,069,960