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Lease Arrangements (Tables)

12 Months Ended

Dec. 31, 2021

Disclosure Of Quantitative Information About Leases For Lessee [Abstract]

Summary of Right-of-use Assets

a.Right-of-use assets

		December 31
		2020				2021
		NT$				NT$
		(In Millions)
Land and buildings
Handsets base stations		$	7,096			$	6,988
Others			1,708				1,538
Equipment			2,205				2,525
		$	11,009			$	11,051

		Year Ended December 31
		2019				2020				2021
		NT$				NT$				NT$
		(In Millions)
Additions to right-of-use assets		$	3,803			$	3,796			$	4,669
Depreciation charge for right-of-use assets
Land and buildings
Handsets base stations		$	2,728			$	2,729			$	2,789
Others			821				786				786
Equipment			419				416				410
		$	3,968			$	3,931			$	3,985

Summary of Lease Liabilities

b.Lease liabilities

		December 31
		2020				2021
		NT$				NT$
		(In Millions)
Lease liabilities
Current		$	3,382			$	3,211
Noncurrent			6,215				7,062
		$	9,597			$	10,273

Summary of Range of Discount Rate for Lease Liabilities

Ranges of discount rates for lease liabilities were as follows:

		December 31
		2020		2021
Land and buildings
Handsets base stations		0.46%-1.18%		0.37%-1.18%
Others		0.46%-9.00%		0.37%-9.00%
Equipment		0.46%-2.99%		0.37%-2.99%

Summary of Total Cash Outflow for Leases

d.Other lease information

		Year Ended December 31
		2019				2020				2021
		NT$				NT$				NT$
		(In Millions)
Expenses relating to low-value asset leases		$	7			$	8			$	8
Expenses relating to variable lease payments not included in      the measurement of lease liabilities		$	6			$	5			$	7
Total cash outflow for leases		$	3,826			$	3,776			$	3,813

X

- Definition

Disclosure of quantitative information about lease liabilities.

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- Definition

Disclosure of significant unobservable inputs used in fair value measurement of lease liabilities.

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X

- Definition

The disclosure of additional information about leasing activities of a lessee.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2021-01-01
-Paragraph 59
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_59&doctype=Standard
-URIDate 2021-03-24

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- Definition

The disclosure of quantitative information about right-of-use assets. [Refer: Right-of-use assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2021-01-01
-Paragraph 53
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_53&doctype=Standard
-URIDate 2021-03-24

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