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Bonds Payable - Summary of Domestic Unsecured Bonds And Overseas Unsecured Bonds (Detail) $ in Millions | 3 Months Ended
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Apr. 14, 2022 TWD ($)
Disclosure of detailed information about borrowings [line items] |
Repayment and Interest Payment | Bullet repayment; interest payable annually
Domestic Unsecured Bonds Hundred And Eleven One Green Bond [Member] | Tranche A [member] | Taiwan [member] | Nonadjusting Events After Reporting Period [Member] |
Disclosure of detailed information about borrowings [line items] |
Issuance starting period | 2022-01
Issuance ending period | 2027-01
Domestic unsecured bonds | $ 2,100.0
Coupon Rate | 0.63%
Repayment and Interest Payment | Bullet repayment; interest payable annually
Domestic Unsecured Bonds Hundred And Eleven One Green Bond [Member] | Tranche B [member] | Taiwan [member] | Nonadjusting Events After Reporting Period [Member] |
Disclosure of detailed information about borrowings [line items] |
Issuance starting period | 2022-01
Issuance ending period | 2029-01
Domestic unsecured bonds | $ 3,300.0
Coupon Rate | 0.72%
Domestic Unsecured Bonds Hundred And Eleven Two [Member] | Tranche A [member] | Taiwan [member] | Nonadjusting Events After Reporting Period [Member] |
Disclosure of detailed information about borrowings [line items] |
Issuance starting period | 2022-03
Issuance ending period | 2026-09
Domestic unsecured bonds | $ 3,000.0
Coupon Rate | 0.84%
Domestic Unsecured Bonds Hundred And Eleven Two [Member] | Tranche B [member] | Taiwan [member] | Nonadjusting Events After Reporting Period [Member] |
Disclosure of detailed information about borrowings [line items] |
Issuance starting period | 2022-03
Issuance ending period | 2027-03
Domestic unsecured bonds | $ 9,600.0
Coupon Rate | 0.85%
Domestic Unsecured Bonds Hundred And Eleven Two [Member] | Tranche C [member] | Taiwan [member] | Nonadjusting Events After Reporting Period [Member] |
Disclosure of detailed information about borrowings [line items] |
Issuance starting period | 2022-03
Issuance ending period | 2029-03
Domestic unsecured bonds | $ 1,600.0
Coupon Rate | 0.90%

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