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Property, Plant and Equipment - Summary of Property, Plant and Equipment - Asset Used by The Company (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2020 TWD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 TWD ($) | Dec. 31, 2018 TWD ($)
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | $ 283,694,000,000 |  | $ 288,914,000,000 |
Depreciation expenses | (26,989,000,000) |  | (26,930,000,000) | $ (27,461,000,000)
Additions | 25,195,000,000 |  | 23,164,000,000 | 27,979,000,000
Disposal | (307,000,000) |  | (86,000,000) | (122,000,000)
Impairment losses | 0 | $ 0 | 93,000,000 | 0
Ending balance | 281,416,000,000 | $ 10,022 | 283,694,000,000 | 288,914,000,000
Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | 276,370,000,000 |  |  |
Impairment losses | 0 |  |  |
Ending balance | 273,823,000,000 |  | 276,370,000,000 |
Carrying Amount [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 940,891,000,000 | 946,460,000,000
Additions |  |  |  | 27,979,000,000
Disposal |  |  |  | (33,350,000,000)
Effect of foreign exchange differences |  |  |  | 60,000,000
Others |  |  |  | (258,000,000)
Ending balance |  |  |  | 940,891,000,000
Carrying Amount [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | 918,513,000,000 |  | 940,891,000,000 |
Effect of retrospective application of IFRS 16 |  |  | (11,086,000,000) |
Additions | 25,195,000,000 |  | 23,160,000,000 |
Disposal | (22,796,000,000) |  | (32,837,000,000) |
Effect of foreign exchange differences | (98,000,000) |  | (44,000,000) |
Acquired by business combinations (Note 14) | 142,000,000 |  |  |
Others | (541,000,000) |  | (1,571,000,000) |
Ending balance | 920,415,000,000 |  | 918,513,000,000 | 940,891,000,000
Carrying Amount [Member] | As Adjusted [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 929,805,000,000 |
Ending balance |  |  |  | 929,805,000,000
Accumulated depreciation, amortization and impairment [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | (651,977,000,000) | (657,752,000,000)
Depreciation expenses |  |  |  | (27,461,000,000)
Disposal |  |  |  | 33,228,000,000
Effect of foreign exchange differences |  |  |  | (20,000,000)
Others |  |  |  | 28,000,000
Ending balance |  |  |  | (651,977,000,000)
Accumulated depreciation, amortization and impairment [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | (642,143,000,000) |  | (651,977,000,000) |
Depreciation expenses | (26,907,000,000) |  | (26,856,000,000) |
Effect of retrospective application of IFRS 16 |  |  | 3,842,000,000 |
Disposal | 22,489,000,000 |  | 32,751,000,000 |
Impairment losses |  |  | (93,000,000) |
Effect of foreign exchange differences | 41,000,000 |  | 17,000,000 |
Acquired by business combinations (Note 14) | (94,000,000) |  |  |
Others | 22,000,000 |  | 173,000,000 |
Ending balance | (646,592,000,000) |  | (642,143,000,000) | (651,977,000,000)
Accumulated depreciation, amortization and impairment [Member] | As Adjusted [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | (648,135,000,000) |
Ending balance |  |  |  | (648,135,000,000)
Land [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 103,972,000,000 |
Ending balance |  |  |  | 103,972,000,000
Land [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | 99,103,000,000 |  |  |
Ending balance | 101,991,000,000 |  | 99,103,000,000 |
Land [Member] | Carrying Amount [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 103,972,000,000 | 104,079,000,000
Additions |  |  |  | 0
Disposal |  |  |  | (71,000,000)
Effect of foreign exchange differences |  |  |  | 0
Others |  |  |  | (36,000,000)
Ending balance |  |  |  | 103,972,000,000
Land [Member] | Carrying Amount [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | 99,103,000,000 |  | 103,972,000,000 |
Effect of retrospective application of IFRS 16 |  |  | (3,617,000,000) |
Additions | 67,000,000 |  | 0 |
Disposal | (270,000,000) |  | (38,000,000) |
Effect of foreign exchange differences | 0 |  | 0 |
Acquired by business combinations (Note 14) | 0 |  |  |
Others | 3,091,000,000 |  | (1,214,000,000) |
Ending balance | 101,991,000,000 |  | 99,103,000,000 | 103,972,000,000
Land [Member] | Carrying Amount [Member] | As Adjusted [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 100,355,000,000 |
Ending balance |  |  |  | 100,355,000,000
Land [Member] | Accumulated depreciation, amortization and impairment [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 0 | 0
Depreciation expenses |  |  |  | 0
Disposal |  |  |  | 0
Effect of foreign exchange differences |  |  |  | 0
Others |  |  |  | 0
Ending balance |  |  |  | 0
Land [Member] | Accumulated depreciation, amortization and impairment [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | 0 |  | 0 |
Depreciation expenses | 0 |  | 0 |
Effect of retrospective application of IFRS 16 |  |  | 0 |
Disposal | 0 |  | 0 |
Impairment losses |  |  | 0 |
Effect of foreign exchange differences | 0 |  | 0 |
Acquired by business combinations (Note 14) | 0 |  |  |
Others | 0 |  | 0 |
Ending balance | 0 |  | 0 | 0
Land [Member] | Accumulated depreciation, amortization and impairment [Member] | As Adjusted [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 0 |
Ending balance |  |  |  | 0
Land improvements [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 263,000,000 |
Ending balance |  |  |  | 263,000,000
Land improvements [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | 243,000,000 |  |  |
Ending balance | 231,000,000 |  | 243,000,000 |
Land improvements [Member] | Carrying Amount [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 1,601,000,000 | 1,595,000,000
Additions |  |  |  | 0
Disposal |  |  |  | 0
Effect of foreign exchange differences |  |  |  | 0
Others |  |  |  | 6,000,000
Ending balance |  |  |  | 1,601,000,000
Land improvements [Member] | Carrying Amount [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | 1,618,000,000 |  | 1,601,000,000 |
Effect of retrospective application of IFRS 16 |  |  | (1,000,000) |
Additions | 0 |  | 0 |
Disposal | (19,000,000) |  | (7,000,000) |
Effect of foreign exchange differences | 0 |  | 0 |
Acquired by business combinations (Note 14) | 0 |  |  |
Others | 31,000,000 |  | 25,000,000 |
Ending balance | 1,630,000,000 |  | 1,618,000,000 | 1,601,000,000
Land improvements [Member] | Carrying Amount [Member] | As Adjusted [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 1,600,000,000 |
Ending balance |  |  |  | 1,600,000,000
Land improvements [Member] | Accumulated depreciation, amortization and impairment [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | (1,338,000,000) | (1,293,000,000)
Depreciation expenses |  |  |  | (45,000,000)
Disposal |  |  |  | 0
Effect of foreign exchange differences |  |  |  | 0
Others |  |  |  | 0
Ending balance |  |  |  | (1,338,000,000)
Land improvements [Member] | Accumulated depreciation, amortization and impairment [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | (1,375,000,000) |  | (1,338,000,000) |
Depreciation expenses | (43,000,000) |  | (43,000,000) |
Effect of retrospective application of IFRS 16 |  |  | 1,000,000 |
Disposal | 19,000,000 |  | 6,000,000 |
Impairment losses |  |  | 0 |
Effect of foreign exchange differences | 0 |  | 0 |
Acquired by business combinations (Note 14) | 0 |  |  |
Others | 0 |  | (1,000,000) |
Ending balance | (1,399,000,000) |  | (1,375,000,000) | (1,338,000,000)
Land improvements [Member] | Accumulated depreciation, amortization and impairment [Member] | As Adjusted [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | (1,337,000,000) |
Ending balance |  |  |  | (1,337,000,000)
Buildings [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 44,784,000,000 |
Ending balance |  |  |  | 44,784,000,000
Buildings [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | 43,024,000,000 |  |  |
Ending balance | 41,642,000,000 |  | 43,024,000,000 |
Buildings [Member] | Carrying Amount [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 72,911,000,000 | 72,694,000,000
Additions |  |  |  | 21,000,000
Disposal |  |  |  | 0
Effect of foreign exchange differences |  |  |  | 0
Others |  |  |  | 196,000,000
Ending balance |  |  |  | 72,911,000,000
Buildings [Member] | Carrying Amount [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | 71,001,000,000 |  | 72,911,000,000 |
Effect of retrospective application of IFRS 16 |  |  | (3,583,000,000) |
Additions | 18,000,000 |  | 1,221,000,000 |
Disposal | (49,000,000) |  | (3,000,000) |
Effect of foreign exchange differences | 0 |  | 0 |
Acquired by business combinations (Note 14) | 0 |  |  |
Others | (81,000,000) |  | 455,000,000 |
Ending balance | 70,889,000,000 |  | 71,001,000,000 | 72,911,000,000
Buildings [Member] | Carrying Amount [Member] | As Adjusted [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 69,328,000,000 |
Ending balance |  |  |  | 69,328,000,000
Buildings [Member] | Accumulated depreciation, amortization and impairment [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | (28,127,000,000) | (26,799,000,000)
Depreciation expenses |  |  |  | (1,356,000,000)
Disposal |  |  |  | 0
Effect of foreign exchange differences |  |  |  | 0
Others |  |  |  | 28,000,000
Ending balance |  |  |  | (28,127,000,000)
Buildings [Member] | Accumulated depreciation, amortization and impairment [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | (27,977,000,000) |  | (28,127,000,000) |
Depreciation expenses | (1,366,000,000) |  | (1,301,000,000) |
Effect of retrospective application of IFRS 16 |  |  | 1,265,000,000 |
Disposal | 49,000,000 |  | 3,000,000 |
Impairment losses |  |  | 0 |
Effect of foreign exchange differences | 0 |  | 0 |
Acquired by business combinations (Note 14) | 0 |  |  |
Others | 47,000,000 |  | 183,000,000 |
Ending balance | (29,247,000,000) |  | (27,977,000,000) | (28,127,000,000)
Buildings [Member] | Accumulated depreciation, amortization and impairment [Member] | As Adjusted [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | (26,862,000,000) |
Ending balance |  |  |  | (26,862,000,000)
Computer equipment [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 2,115,000,000 |
Ending balance |  |  |  | 2,115,000,000
Computer equipment [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | 1,937,000,000 |  |  |
Ending balance | 1,767,000,000 |  | 1,937,000,000 |
Computer equipment [Member] | Carrying Amount [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 14,258,000,000 | 14,162,000,000
Additions |  |  |  | 52,000,000
Disposal |  |  |  | (643,000,000)
Effect of foreign exchange differences |  |  |  | 0
Others |  |  |  | 687,000,000
Ending balance |  |  |  | 14,258,000,000
Computer equipment [Member] | Carrying Amount [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | 13,005,000,000 |  | 14,258,000,000 |
Effect of retrospective application of IFRS 16 |  |  | 0 |
Additions | 55,000,000 |  | 57,000,000 |
Disposal | (1,245,000,000) |  | (1,916,000,000) |
Effect of foreign exchange differences | 0 |  | 0 |
Acquired by business combinations (Note 14) | 70,000,000 |  |  |
Others | 521,000,000 |  | 606,000,000 |
Ending balance | 12,406,000,000 |  | 13,005,000,000 | 14,258,000,000
Computer equipment [Member] | Carrying Amount [Member] | As Adjusted [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 14,258,000,000 |
Ending balance |  |  |  | 14,258,000,000
Computer equipment [Member] | Accumulated depreciation, amortization and impairment [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | (12,143,000,000) | (11,788,000,000)
Depreciation expenses |  |  |  | (983,000,000)
Disposal |  |  |  | 632,000,000
Effect of foreign exchange differences |  |  |  | 0
Others |  |  |  | (4,000,000)
Ending balance |  |  |  | (12,143,000,000)
Computer equipment [Member] | Accumulated depreciation, amortization and impairment [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | (11,068,000,000) |  | (12,143,000,000) |
Depreciation expenses | (770,000,000) |  | (827,000,000) |
Effect of retrospective application of IFRS 16 |  |  | 0 |
Disposal | 1,243,000,000 |  | 1,909,000,000 |
Impairment losses |  |  | 0 |
Effect of foreign exchange differences | 0 |  | 0 |
Acquired by business combinations (Note 14) | (40,000,000) |  |  |
Others | (4,000,000) |  | (7,000,000) |
Ending balance | (10,639,000,000) |  | (11,068,000,000) | (12,143,000,000)
Computer equipment [Member] | Accumulated depreciation, amortization and impairment [Member] | As Adjusted [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | (12,143,000,000) |
Ending balance |  |  |  | (12,143,000,000)
Telecommunications equipment [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 116,322,000,000 |
Ending balance |  |  |  | 116,322,000,000
Telecommunications equipment [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | 115,694,000,000 |  |  |
Ending balance | 117,113,000,000 |  | 115,694,000,000 |
Telecommunications equipment [Member] | Carrying Amount [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 715,748,000,000 | 722,054,000,000
Additions |  |  |  | 159,000,000
Disposal |  |  |  | (31,984,000,000)
Effect of foreign exchange differences |  |  |  | 60,000,000
Others |  |  |  | 25,459,000,000
Ending balance |  |  |  | 715,748,000,000
Telecommunications equipment [Member] | Carrying Amount [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | 706,032,000,000 |  | 715,748,000,000 |
Effect of retrospective application of IFRS 16 |  |  | (3,885,000,000) |
Additions | 118,000,000 |  | 120,000,000 |
Disposal | (20,619,000,000) |  | (30,417,000,000) |
Effect of foreign exchange differences | (91,000,000) |  | (37,000,000) |
Acquired by business combinations (Note 14) | 0 |  |  |
Others | 25,336,000,000 |  | 24,503,000,000 |
Ending balance | 710,776,000,000 |  | 706,032,000,000 | 715,748,000,000
Telecommunications equipment [Member] | Carrying Amount [Member] | As Adjusted [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 711,863,000,000 |
Ending balance |  |  |  | 711,863,000,000
Telecommunications equipment [Member] | Accumulated depreciation, amortization and impairment [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | (599,426,000,000) | (607,154,000,000)
Depreciation expenses |  |  |  | (24,236,000,000)
Disposal |  |  |  | 31,952,000,000
Effect of foreign exchange differences |  |  |  | (20,000,000)
Others |  |  |  | 32,000,000
Ending balance |  |  |  | (599,426,000,000)
Telecommunications equipment [Member] | Accumulated depreciation, amortization and impairment [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | (590,338,000,000) |  | (599,426,000,000) |
Depreciation expenses | (23,994,000,000) |  | (23,906,000,000) |
Effect of retrospective application of IFRS 16 |  |  | 2,576,000,000 |
Disposal | 20,600,000,000 |  | 30,380,000,000 |
Impairment losses |  |  | 0 |
Effect of foreign exchange differences | 41,000,000 |  | 16,000,000 |
Acquired by business combinations (Note 14) | 0 |  |  |
Others | 28,000,000 |  | 22,000,000 |
Ending balance | (593,663,000,000) |  | (590,338,000,000) | (599,426,000,000)
Telecommunications equipment [Member] | Accumulated depreciation, amortization and impairment [Member] | As Adjusted [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | (596,850,000,000) |
Ending balance |  |  |  | (596,850,000,000)
Transportation equipment [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 231,000,000 |
Ending balance |  |  |  | 231,000,000
Transportation equipment [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | 218,000,000 |  |  |
Ending balance | 176,000,000 |  | 218,000,000 |
Transportation equipment [Member] | Carrying Amount [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 3,882,000,000 | 3,834,000,000
Additions |  |  |  | 0
Disposal |  |  |  | (29,000,000)
Effect of foreign exchange differences |  |  |  | 0
Others |  |  |  | 77,000,000
Ending balance |  |  |  | 3,882,000,000
Transportation equipment [Member] | Carrying Amount [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | 3,912,000,000 |  | 3,882,000,000 |
Effect of retrospective application of IFRS 16 |  |  | 0 |
Additions | 1,000,000 |  | 1,000,000 |
Disposal | (45,000,000) |  | (51,000,000) |
Effect of foreign exchange differences | 0 |  | 0 |
Acquired by business combinations (Note 14) | 0 |  |  |
Others | 26,000,000 |  | 80,000,000 |
Ending balance | 3,894,000,000 |  | 3,912,000,000 | 3,882,000,000
Transportation equipment [Member] | Carrying Amount [Member] | As Adjusted [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 3,882,000,000 |
Ending balance |  |  |  | 3,882,000,000
Transportation equipment [Member] | Accumulated depreciation, amortization and impairment [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | (3,651,000,000) | (3,513,000,000)
Depreciation expenses |  |  |  | (162,000,000)
Disposal |  |  |  | 29,000,000
Effect of foreign exchange differences |  |  |  | 0
Others |  |  |  | (5,000,000)
Ending balance |  |  |  | (3,651,000,000)
Transportation equipment [Member] | Accumulated depreciation, amortization and impairment [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | (3,694,000,000) |  | (3,651,000,000) |
Depreciation expenses | (68,000,000) |  | (91,000,000) |
Effect of retrospective application of IFRS 16 |  |  | 0 |
Disposal | 45,000,000 |  | 51,000,000 |
Impairment losses |  |  | 0 |
Effect of foreign exchange differences | 0 |  | 0 |
Acquired by business combinations (Note 14) | 0 |  |  |
Others | (1,000,000) |  | (3,000,000) |
Ending balance | (3,718,000,000) |  | (3,694,000,000) | (3,651,000,000)
Transportation equipment [Member] | Accumulated depreciation, amortization and impairment [Member] | As Adjusted [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | (3,651,000,000) |
Ending balance |  |  |  | (3,651,000,000)
Miscellaneous equipment [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 2,582,000,000 |
Ending balance |  |  |  | 2,582,000,000
Miscellaneous equipment [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | 2,428,000,000 |  |  |
Ending balance | 2,374,000,000 |  | 2,428,000,000 |
Miscellaneous equipment [Member] | Carrying Amount [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 9,874,000,000 | 9,515,000,000
Additions |  |  |  | 334,000,000
Disposal |  |  |  | (623,000,000)
Effect of foreign exchange differences |  |  |  | 0
Others |  |  |  | 648,000,000
Ending balance |  |  |  | 9,874,000,000
Miscellaneous equipment [Member] | Carrying Amount [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | 10,090,000,000 |  | 9,874,000,000 |
Effect of retrospective application of IFRS 16 |  |  | 0 |
Additions | 150,000,000 |  | 149,000,000 |
Disposal | (520,000,000) |  | (405,000,000) |
Effect of foreign exchange differences | 0 |  | (1,000,000) |
Acquired by business combinations (Note 14) | 72,000,000 |  |  |
Others | 508,000,000 |  | 473,000,000 |
Ending balance | 10,300,000,000 |  | 10,090,000,000 | 9,874,000,000
Miscellaneous equipment [Member] | Carrying Amount [Member] | As Adjusted [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 9,874,000,000 |
Ending balance |  |  |  | 9,874,000,000
Miscellaneous equipment [Member] | Accumulated depreciation, amortization and impairment [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | (7,292,000,000) | (7,205,000,000)
Depreciation expenses |  |  |  | (679,000,000)
Disposal |  |  |  | 615,000,000
Effect of foreign exchange differences |  |  |  | 0
Others |  |  |  | (23,000,000)
Ending balance |  |  |  | (7,292,000,000)
Miscellaneous equipment [Member] | Accumulated depreciation, amortization and impairment [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | (7,662,000,000) |  | (7,292,000,000) |
Depreciation expenses | (666,000,000) |  | (688,000,000) |
Effect of retrospective application of IFRS 16 |  |  | 0 |
Disposal | 504,000,000 |  | 402,000,000 |
Impairment losses |  |  | (64,000,000) |
Effect of foreign exchange differences | 0 |  | 1,000,000 |
Acquired by business combinations (Note 14) | (54,000,000) |  |  |
Others | (48,000,000) |  | (21,000,000) |
Ending balance | (7,926,000,000) |  | (7,662,000,000) | (7,292,000,000)
Miscellaneous equipment [Member] | Accumulated depreciation, amortization and impairment [Member] | As Adjusted [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | (7,292,000,000) |
Ending balance |  |  |  | (7,292,000,000)
Construction in progress and equipment to be accepted [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 18,645,000,000 |
Ending balance |  |  |  | 18,645,000,000
Construction in progress and equipment to be accepted [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | 13,723,000,000 |  |  |
Ending balance | 8,529,000,000 |  | 13,723,000,000 |
Construction in progress and equipment to be accepted [Member] | Carrying Amount [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 18,645,000,000 | 18,527,000,000
Additions |  |  |  | 27,413,000,000
Disposal |  |  |  | 0
Effect of foreign exchange differences |  |  |  | 0
Others |  |  |  | (27,295,000,000)
Ending balance |  |  |  | 18,645,000,000
Construction in progress and equipment to be accepted [Member] | Carrying Amount [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | 13,752,000,000 |  | 18,645,000,000 |
Effect of retrospective application of IFRS 16 |  |  | 0 |
Additions | 24,786,000,000 |  | 21,612,000,000 |
Disposal | (29,000,000) |  | 0 |
Effect of foreign exchange differences | (7,000,000) |  | (6,000,000) |
Acquired by business combinations (Note 14) | 0 |  |  |
Others | (29,973,000,000) |  | (26,499,000,000) |
Ending balance | 8,529,000,000 |  | 13,752,000,000 | 18,645,000,000
Construction in progress and equipment to be accepted [Member] | Carrying Amount [Member] | As Adjusted [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 18,645,000,000 |
Ending balance |  |  |  | 18,645,000,000
Construction in progress and equipment to be accepted [Member] | Accumulated depreciation, amortization and impairment [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | 0 | 0
Depreciation expenses |  |  |  | 0
Disposal |  |  |  | 0
Effect of foreign exchange differences |  |  |  | 0
Others |  |  |  | 0
Ending balance |  |  |  | 0
Construction in progress and equipment to be accepted [Member] | Accumulated depreciation, amortization and impairment [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance | (29,000,000) |  | 0 |
Depreciation expenses | 0 |  | 0 |
Effect of retrospective application of IFRS 16 |  |  | 0 |
Disposal | 29,000,000 |  | 0 |
Impairment losses |  |  | (29,000,000) |
Effect of foreign exchange differences | 0 |  | 0 |
Acquired by business combinations (Note 14) | 0 |  |  |
Others | 0 |  | 0 |
Ending balance | $ 0 |  | (29,000,000) | 0
Construction in progress and equipment to be accepted [Member] | Accumulated depreciation, amortization and impairment [Member] | As Adjusted [Member] | Assets Used by the Company [Member] |  |  |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |  |  |
Beginning balance |  |  | $ 0 |
Ending balance |  |  |  | $ 0

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