XML 115 R97.htm IDEA: XBRL DOCUMENT v3.8.0.1

Hedging Derivative Financial Instruments - Maturity Period of Outstanding Interest Rate Futures Contracts (Detail) - Interest rate futures contracts [member] - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
March 2017 [member]
Disclosure of detailed information about financial instruments [line items]
Contract Amount		$ 53.6
March 2018 [member]
Disclosure of detailed information about financial instruments [line items]
Contract Amount	$ 169.4

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

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=tsm_InterestRateFuturesContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=tsm_DerivativeInstrumentMaturingMarchTwoThousandSeventeenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=tsm_DerivativeInstrumentMaturingMarchTwoThousandEighteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: