XML 167 R99.htm IDEA: XBRL DOCUMENT v3.20.1
Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail)
$ in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2019
TWD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
TWD ($)
Dec. 31, 2017
TWD ($)
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance $ 1,072,050.3   $ 1,062,542.3  
Additions (Deductions) 564,283.0   300,024.4 $ 322,493.9
Ending balance 1,352,377.4 $ 45,214.9 1,072,050.3 1,062,542.3
Land and Land Improvements [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 3,460.8   3,472.7  
Ending balance     3,460.8 3,472.7
Buildings [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 200,340.2   184,688.1  
Ending balance     200,340.2 184,688.1
Machinery and equipment        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 679,481.2   692,303.4  
Impairment 301.4   423.5  
Ending balance     679,481.2 692,303.4
Office equipment [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 15,857.1   14,724.6  
Ending balance     15,857.1 14,724.6
Equipment under installation and construction in progress [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 172,911.0   167,353.5  
Ending balance     172,911.0 167,353.5
Cost [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 3,372,779.1   3,080,615.1 2,773,250.8
Additions (Deductions)     300,024.4 322,493.9
Disposals or retirements     (7,174.2) (9,967.8)
Reclassification       10.3
Effect of disposal of subsidiary       (66.5)
Effect of exchange rate changes     (686.2) (5,105.6)
Ending balance     3,372,779.1 3,080,615.1
Cost [member] | Land and Land Improvements [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 4,011.4   3,983.2 4,049.3
Effect of exchange rate changes     28.2 (66.1)
Ending balance     4,011.4 3,983.2
Cost [member] | Buildings [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 418,714.3   379,134.6 304,404.5
Additions (Deductions)     40,396.4 75,594.7
Disposals or retirements     (410.9) (37.0)
Effect of exchange rate changes     (405.8) (827.6)
Ending balance     418,714.3 379,134.6
Cost [member] | Machinery and equipment        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 2,728,760.2   2,487,752.3 2,042,867.7
Additions (Deductions)     247,042.3 458,605.8
Disposals or retirements     (5,972.5) (9,553.0)
Reclassification       8.8
Effect of disposal of subsidiary       (51.2)
Effect of exchange rate changes     (61.9) (4,125.8)
Ending balance     2,728,760.2 2,487,752.3
Cost [member] | Office equipment [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 48,382.2   42,391.5 34,729.6
Additions (Deductions)     6,773.4 8,195.9
Disposals or retirements     (790.8) (377.8)
Reclassification       1.5
Effect of disposal of subsidiary       (14.8)
Effect of exchange rate changes     8.1 (142.9)
Ending balance     48,382.2 42,391.5
Cost [member] | Equipment under installation and construction in progress [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 172,911.0   167,353.5 387,199.7
Additions (Deductions)     5,812.3 (219,902.5)
Effect of disposal of subsidiary       (0.5)
Effect of exchange rate changes     (254.8) 56.8
Ending balance     172,911.0 167,353.5
Accumulated depreciation [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 2,300,728.8   2,018,072.8 1,775,473.1
Additions (Deductions)     288,124.9 255,796.0
Disposals or retirements     (5,962.6) (8,520.6)
Reclassification       9.7
Impairment     423.5  
Effect of disposal of subsidiary       (56.7)
Effect of exchange rate changes     70.2 (4,628.7)
Ending balance     2,300,728.8 2,018,072.8
Accumulated depreciation [member] | Land and Land Improvements [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 550.6   510.5 524.8
Additions (Deductions)     20.9 27.8
Effect of exchange rate changes     19.2 (42.1)
Ending balance     550.6 510.5
Accumulated depreciation [member] | Buildings [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 218,374.1   194,446.5 174,349.1
Additions (Deductions)     24,293.4 20,844.6
Disposals or retirements     (399.0) (28.8)
Effect of exchange rate changes     33.2 (718.4)
Ending balance     218,374.1 194,446.5
Accumulated depreciation [member] | Machinery and equipment        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 2,049,279.0   1,795,448.9 1,577,377.5
Additions (Deductions)     258,195.3 229,985.6
Disposals or retirements     (4,773.6) (8,114.3)
Reclassification       8.2
Impairment     423.5  
Effect of disposal of subsidiary       (42.8)
Effect of exchange rate changes     (15.1) (3,765.3)
Ending balance     2,049,279.0 1,795,448.9
Accumulated depreciation [member] | Office equipment [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance $ 32,525.1   27,666.9 23,221.7
Additions (Deductions)     5,615.3 4,938.0
Disposals or retirements     (790.0) (377.5)
Reclassification       1.5
Effect of disposal of subsidiary       (13.9)
Effect of exchange rate changes     32.9 (102.9)
Ending balance     $ 32,525.1 $ 27,666.9