XML 85 R72.htm IDEA: XBRL DOCUMENT
v3.19.1

Other Income (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018
Text block [abstract] |
Summary of Other Income |
|  | Years Ended December 31 |
|  | 2016 |  |  | 2017 |  |  | 2018 |
|  | NT$ (In Millions) |  |  | NT$ (In Millions) |  |  | NT$ (In Millions) |
Interest income |  |  |  |  |  |  |  |  |  |  |  |
Bank deposits |  | $ | 4,892.6 |  |  | $ | 6,412.8 |  |  | $ | 10,310.7 |
Financial assets at FVTPL |  |  | — |  |  |  | — |  |  |  | 382.7 |
Financial assets at FVTOCI |  |  | — |  |  |  | — |  |  |  | 3,078.6 |
Financial assets at amortized cost |  |  | — |  |  |  | — |  |  |  | 922.4 |
Available-for-sale financial assets |  |  | 816.2 |  |  |  | 2,091.4 |  |  |  | — |
Held-to-maturity financial assets |  |  | 383.3 |  |  |  | 568.6 |  |  |  | — |
Structured product |  |  | 225.4 |  |  |  | 391.9 |  |  |  | — |
|  |  | 6,317.5 |  |  |  | 9,464.7 |  |  |  | 14,694.4 |
Dividend income |  |  | 137.4 |  |  |  | 145.6 |  |  |  | 158.4 |
|  | $ | 6,454.9 |  |  | $ | 9,610.3 |  |  | $ | 14,852.8 |

X
- Definition The disclosure of detailed information about finance income. + References No definition available. + Details
Name: | tsm_DisclosureOfDetailedInformationAboutFinanceIncomeExplanatory
Namespace Prefix: | tsm_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Text block [abstract] + References No definition available. + Details
Name: | tsm_TextBlockAbstract
Namespace Prefix: | tsm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration