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Cash and Cash Equivalents

12 Months Ended

Dec. 31, 2017

Cash And Cash Equivalents [Abstract]

Cash and Cash Equivalents

7. CASH AND CASH EQUIVALENTS

		December 31
		2016				2017
		NT$				NT$
		(In Millions)
Cash
Cash on hand		$	370			$	383
Bank deposits			7,240				7,877
			7,610				8,260
Cash equivalents (investments with maturities of less    than three months)
Commercial paper		$	11,436			$	10,179
Negotiable certificate of deposit			10,800				7,950
Time deposits			1,254				2,436
			23,490				20,565
		$	31,100			$	28,825

The annual yield rates of bank deposits, commercial paper, negotiable certificate of deposit and time deposits as of balance sheet dates were as follows:

		December 31
		2016		2017
Bank deposits		0.00%-0.42%		0.00%-0.70%
Commercial paper		0.32%-0.42%		0.32%-0.40%
Negotiable certificate of deposit		0.35%-0.50%		0.40%-0.50%
Time deposits		0.40%-3.30%		0.52%-4.40%

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- Definition

The disclosure of cash and cash equivalents. [Refer: Cash and cash equivalents]

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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