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: