| | For the year ended December 31, 2017 | | |||||||||||||
| | Balance, Beginning of Year | | Additions | | Disposal or write off | | Reclassification and effect of change in exchange rate | | Balance, End of Year | | |||||
| | (in thousands) | | |||||||||||||
Cost: | | | | | | | | | | | | | | | | |
Land | | $ | 8,873,981 | | | 865,956 | | | (675,811) | | | (55,467) | | | 9,008,659 | |
Buildings | | | 130,595,844 | | | 433,269 | | | (3,786,388) | | | (3,231,856) | | | 124,010,869 | |
Machinery and equipment | | | 798,046,434 | | | 1,827,188 | | | (14,844,436) | | | 15,135,124 | | | 800,164,310 | |
Other equipment | | | 32,419,736 | | | 4,140,108 | | | (7,900,925) | | | 700,229 | | | 29,359,148 | |
| | | 969,935,995 | | | 7,266,521 | | | (27,207,560) | | | 12,548,030 | | | 962,542,986 | |
Accumulated depreciation and impairment loss: | | | | | | | | | | | | | | | | |
Land | | | 173,397 | | | - | | | (54,186) | | | (119,211) | | | - | |
Buildings | | | 36,028,301 | | | 3,216,571 | | | (3,785,921) | | | (1,633,576) | | | 33,825,375 | |
Machinery and equipment | | | 698,110,663 | | | 27,946,301 | | | (14,694,674) | | | (4,027,879) | | | 707,334,411 | |
Other equipment | | | 26,154,173 | | | 5,655,026 | | | (7,883,150) | | | (208,469) | | | 23,717,580 | |
| | | 760,466,534 | | | 36,817,898 | | | (26,417,931) | | | (5,989,135) | | | 764,877,366 | |
Prepayments for purchase of land and equipment, and construction in progress | | | 13,272,371 | | | 36,289,529 | | | (29,206) | | | (22,265,225) | | | 27,267,469 | |
Net carrying amounts | | $ | 222,741,832 | | | | | | | | | | | | 224,933,089 | |
| | For the year ended December 31, 2016 | | |||||||||||||
| | Balance, Beginning of Year | | Additions | | Disposal or write off | | Reclassification and effect of change in exchange rate | | Balance, End of Year | | |||||
| | (in thousands) | | |||||||||||||
Cost: | | | | | | | | | | | | | | | | |
Land | | $ | 9,112,286 | | | - | | | (14,455) | | | (223,850) | | | 8,873,981 | |
Buildings | | | 122,156,354 | | | 1,086 | | | (580,089) | | | 9,018,493 | | | 130,595,844 | |
Machinery and equipment | | | 779,019,328 | | | 2,424,626 | | | (24,033,087) | | | 40,635,567 | | | 798,046,434 | |
Other equipment | | | 34,248,005 | | | 4,532,365 | | | (6,462,949) | | | 102,315 | | | 32,419,736 | |
| | | 944,535,973 | | | 6,958,077 | | | (31,090,580) | | | 49,532,525 | | | 969,935,995 | |
Accumulated depreciation and impairment loss: | | | | | | | | | | | | | | | | |
Land | | | 184,889 | | | - | | | (14,487) | | | 2,995 | | | 173,397 | |
Buildings | | | 32,791,946 | | | 3,107,870 | | | (132,589) | | | 261,074 | | | 36,028,301 | |
Machinery and equipment | | | 694,955,031 | | | 30,329,428 | | | (23,846,019) | | | (3,327,777) | | | 698,110,663 | |
Other equipment | | | 30,215,702 | | | 5,130,524 | | | (6,430,868) | | | (2,761,185) | | | 26,154,173 | |
| | | 758,147,568 | | | 38,567,822 | | | (30,423,963) | | | (5,824,893) | | | 760,466,534 | |
Prepayments for purchase of land and equipment, and construction in progress | | | 22,397,204 | | | 48,931,054 | | | (29,246) | | | (58,026,641) | | | 13,272,371 | |
Net carrying amounts | | $ | 208,785,609 | | | | | | | | | | | | 222,741,832 | |