XML 180 R84.htm IDEA: XBRL DOCUMENT
v3.20.1

Financial Assets and Liabilities at Fair Value through Profit or Loss - Outstanding Forward Exchange Contracts for which Hedge Accounting Treatment is not Applied (Detail) € in Millions, ¥ in Millions, ¥ in Millions, $ in Millions, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 TWD ($) | Dec. 31, 2018 TWD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 EUR (€) | Dec. 31, 2019 JPY (¥) | Dec. 31, 2019 CNY (¥) | Dec. 31, 2018 USD ($) | Dec. 31, 2018 EUR (€) | Dec. 31, 2018 JPY (¥) | Dec. 31, 2018 CNY (¥)
Sell NT$/Buy EUR [member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Maturity Date | 2020-01 | 2019-01 |  |  |  |  |  |  |  |
Sell NT$/Buy EUR [member] | Top of range [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Maturity Date | 2020-06 | 2019-03 |  |  |  |  |  |  |  |
Sell NT$/Buy EUR [member] | Sell [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Contract Amount | $ 84,690.4 | $ 18,545.9 |  |  |  |  |  |  |  |
Sell NT$/Buy EUR [member] | Buy [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Contract Amount | € |  |  |  | € 2,509.0 |  |  |  | € 527.0 |  |
Sell NT$/Buy JPY [member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Maturity Date | 2020-01 | 2019-01 |  |  |  |  |  |  |  |
Sell NT$/Buy JPY [member] | Top of range [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Maturity Date | 2020-03 | 2019-03 |  |  |  |  |  |  |  |
Sell NT$/Buy JPY [member] | Sell [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Contract Amount | $ 23,737.6 | $ 4,757.9 |  |  |  |  |  |  |  |
Sell NT$/Buy JPY [member] | Buy [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Contract Amount | ¥ |  |  |  |  | ¥ 85,600.0 |  |  |  | ¥ 17,200.0 |
Sell US$/Buy JPY [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Maturity Date | 2020-01 | 2019-01 |  |  |  |  |  |  |  |
Sell US$/Buy JPY [member] | Sell [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Contract Amount |  |  | $ 6.2 |  |  |  | $ 175.6 |  |  |
Sell US$/Buy JPY [member] | Buy [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Contract Amount | ¥ |  |  |  |  | 678.0 |  |  |  | ¥ 19,389.0 |
Sell US$/Buy RMB [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Maturity Date | 2020-01 | 2019-01 |  |  |  |  |  |  |  |
Sell US$/Buy RMB [member] | Sell [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Contract Amount |  |  | 497.0 |  |  |  | 318.0 |  |  |
Sell US$/Buy RMB [member] | Buy [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Contract Amount | ¥ |  |  |  |  |  | ¥ 3,493.9 |  |  |  | ¥ 2,188.7
Sell US$/Buy NT$ [member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Maturity Date | 2020-01 | 2019-01 |  |  |  |  |  |  |  |
Sell US$/Buy NT$ [member] | Top of range [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Maturity Date | 2020-03 | 2019-02 |  |  |  |  |  |  |  |
Sell US$/Buy NT$ [member] | Sell [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Contract Amount |  |  | 26.0 |  |  |  | 127.0 |  |  |
Sell US$/Buy NT$ [member] | Buy [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Contract Amount | $ 787.0 | $ 3,908.6 |  |  |  |  |  |  |  |
Sell RMB /Buy EUR [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Maturity Date |  | 2019-01 |  |  |  |  |  |  |  |
Sell US$/Buy EUR [member] | Sell [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Contract Amount |  |  |  |  |  |  | 0.5 |  |  |
Sell US$/Buy EUR [member] | Buy [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Contract Amount | € |  |  |  |  |  |  |  | € 0.4 |  |
Sell RMB/Buy US$ [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Maturity Date |  | 2019-01 |  |  |  |  |  |  |  |
Sell RMB/Buy US$ [member] | Sell [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Contract Amount | ¥ |  |  |  |  |  |  |  |  |  | ¥ 667.5
Sell RMB/Buy US$ [member] | Buy [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Contract Amount |  |  |  |  |  |  | $ 97.0 |  |  |
Sell JPY/Buy US$ [member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Maturity Date | 2020-01 |  |  |  |  |  |  |  |  |
Sell JPY/Buy US$ [member] | Top of range [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Maturity Date | 2020-02 |  |  |  |  |  |  |  |  |
Sell JPY/Buy US$ [member] | Sell [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Contract Amount | ¥ |  |  |  |  | ¥ 57,471.6 |  |  |  |  |
Sell JPY/Buy US$ [member] | Buy [member] |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |
Contract Amount |  |  | $ 526.4 |  |  |  |  |  |  |

X
- Definition The amount of contractual undiscounted cash flows in relation to contractual amounts to be exchanged in a derivative financial instrument for which gross cash flows are exchanged. [Refer: Derivatives [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph B11D -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_B11D_d&doctype=Appendix&subtype=B -URIDate 2019-03-27 + Details
Name: | ifrs-full_ContractualAmountsToBeExchangedInDerivativeFinancialInstrumentForWhichGrossCashFlowsAreExchanged
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfFinancialInstrumentsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Derivative maturity date month and year. + References No definition available. + Details
Name: | tsm_DerivativeMaturityDateMonthAndYear
Namespace Prefix: | tsm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_CategoriesOfFinancialAssetsAxis=tsm_DerivativeInstrumentOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=tsm_CurrencyForwardContractsSellOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=tsm_CurrencyForwardContractsBuyOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfFinancialAssetsAxis=tsm_DerivativeInstrumentTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfFinancialAssetsAxis=tsm_DerivativeInstrumentThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfFinancialAssetsAxis=tsm_DerivativeInstrumentFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfFinancialAssetsAxis=tsm_DerivativeInstrumentFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfFinancialAssetsAxis=tsm_DerivativeInstrumentSixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfFinancialAssetsAxis=tsm_DerivativeInstrumentNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfFinancialAssetsAxis=tsm_DerivativeInstrumentTenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfFinancialAssetsAxis=tsm_DerivativeInstrumentElevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |