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Other Gains and Losses, Net (Tables)

12 Months Ended

Dec. 31, 2017

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Summary of Other Gains and Losses


		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