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Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2022

Text Block [Abstract]

Computation of Earnings Per Share


		Years Ended December 31
		2020				2021				2022
		(NT$)				(NT$)				(NT$)
Basic EPS		$	19.70			$	22.84			$	38.29

Diluted EPS		$	19.70			$	22.84			$	38.29

EPS is computed as follows:


		Years Ended December 31
		2020				2021				2022
		(NT$)				(NT$)				(NT$)
Basic EPS
Net income available to common shareholders of the parent (in millions)		$	510,744.0			$	592,359.2			$	992,923.4

Weighted average number of common shares outstanding used in the computation of basic EPS (in millions)			25,930.3				25,930.3				25,929.2

Basic EPS (in dollars)		$	19.70			$	22.84			$	38.29

Diluted EPS
Net income available to common shareholders of the parent (in millions)		$	510,744.0			$	592,359.2			$	992,923.4

Weighted average number of common shares outstanding used in the computation of basic EPS (in millions)			25,930.3				25,930.3				25,929.2
Effects of all dilutive potential common shares (in millions)			—				—				0.2

Weighted average number of common shares used in the computation of diluted EPS (in millions)			25,930.3				25,930.3				25,929.4

Diluted EPS (in dollars)		$	19.70			$	22.84			$	38.29