XML 52 R34.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Other Gains and Losses, Net | 12 Months Ended
--- | ---
Dec. 31, 2017
Text block1 [abstract] |
Other Gains and Losses, Net |
29. | OTHER GAINS AND LOSSES, NET
|  | Years Ended December 31 |
|  | 2015 |  |  | 2016 |  |  | 2017 |
|  | NT$ |  |  | NT$ |  |  | NT$ |
|  | (In Millions) |  |  | (In Millions) |  |  | (In Millions) |
Gain on disposal of financial assets, net |  |  |  |  |  |  |  |  |  |  |  |
Available-for-sale financial assets |  | $ | 22,157.9 |  |  | $ | 33.2 |  |  | $ | 89.8 |
Gain (loss) on disposal of investments accounted for using equity method, net |  |  | 2,492.1 |  |  |  | (260.0 | ) |  |  | — |
Gain (loss) from disposal of subsidiaries |  |  | (138.2 | ) |  |  | (36.1 | ) |  |  | 17.3 |
Other gains |  |  | 189.3 |  |  |  | 176.8 |  |  |  | 409.9 |
Net gain (loss) on financial instruments at FVTPL |  |  |  |  |  |  |  |  |  |  |  |
Held for trading |  |  | (1,769.3 | ) |  |  | 467.1 |  |  |  | 2,253.7 |
Designated as at FVTPL |  |  | — |  |  |  | (37.4 | ) |  |  | 131.0 |
Gain (loss) arising from fair value hedges, net |  |  | (439.7 | ) |  |  | 16.9 |  |  |  | (30.3 | )
Impairment loss of financial assets |  |  |  |  |  |  |  |  |  |  |  |
Available-for-sale financial assets |  |  | (154.7 | ) |  |  | (122.2 | ) |  |  | (29.6 | )
Other losses |  |  | (145.9 | ) |  |  | (42.4 | ) |  |  | (24.4 | )
|  | $ | 22,191.5 |  |  | $ | 195.9 |  |  | $ | 2,817.4 |

X
- Definition The disclosure of other gains and losses. + References No definition available. + Details
Name: | tsm_DisclosureOfOtherGainAndLossExplanatory
Namespace Prefix: | tsm_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Text block1 [abstract] + References No definition available. + Details
Name: | tsm_TextBlock1Abstract
Namespace Prefix: | tsm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration