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Long-term Bank Loans - Additional Information (Detail) $ in Billions | May 15, 2018 TWD ($) Bank | May 16, 2016 TWD ($) Bank
--- | --- | ---
Disclosure of detailed information about borrowings [Line Items] |  |
Number of banks in syndicate | Bank | 11 | 10
Syndicated loan [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Principal amount of loan | $ | $ 12.0 | $ 13.2
Maturity of loan | five years | five years

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- Details
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