v3.24.1
Financial Instruments - Summary of Maturity Analysis for Non-derivative Financial Liabilities (Detail)
$ in Thousands, $ in Thousands
Dec. 31, 2023
TWD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
TWD ($)
Less than 1 month [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts $ 84,501,335 $ 2,759,678 $ 87,258,757
Less than 1 month [member] | Obligation under leases [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 123,436 4,031 120,733
Less than 1 month [member] | Non interest bearing [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 52,472,703 1,713,674 65,356,106
Less than 1 month [member] | Floating interest rate [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 19,534,908 637,979 9,251,237
Less than 1 month [member] | Fixed interest rate [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 12,370,288 403,994 12,530,681
1 to 3 months [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 66,640,052 2,176,357 54,280,316
1 to 3 months [member] | Obligation under leases [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 219,960 7,184 201,686
1 to 3 months [member] | Non interest bearing [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 33,530,541 1,095,053 33,887,460
1 to 3 months [member] | Floating interest rate [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 9,967,914 325,536 10,982,036
1 to 3 months [member] | Fixed interest rate [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 22,921,637 748,584 9,209,134
3 months to 1 year [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 34,983,988 1,142,521 30,644,761
3 months to 1 year [member] | Obligation under leases [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 884,309 28,880 790,427
3 months to 1 year [member] | Non interest bearing [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 13,358,363 436,263 11,145,612
3 months to 1 year [member] | Floating interest rate [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 9,505,587 310,437 9,652,804
3 months to 1 year [member] | Fixed interest rate [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 11,235,729 366,941 9,055,918
1-5 years [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 106,829,736 3,488,888 141,300,566
1-5 years [member] | Obligation under leases [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 2,867,502 93,648 2,685,977
1-5 years [member] | Non interest bearing [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 4,478,467 146,260 20,498
1-5 years [member] | Floating interest rate [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 78,388,027 2,560,027 93,837,521
1-5 years [member] | Fixed interest rate [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 21,095,740 688,953 44,756,570
More than 5 years [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 14,373,773 469,424 10,899,888
More than 5 years [member] | Obligation under leases [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 5,505,095 179,787 5,147,266
More than 5 years [member] | Non interest bearing [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts 83,594 2,730 74,643
More than 5 years [member] | Floating interest rate [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts $ 8,785,084 $ 286,907 5,648,699
More than 5 years [member] | Fixed interest rate [member]      
Disclosure of maturity analysis for non-derivative financial liabilities [line items]      
Non-derivative financial liabilities undiscounted amounts     $ 29,280