XML 152 R100.htm IDEA: XBRL DOCUMENT v3.21.1
Property, Machinery and Equipment, Net and Assets For The Right-Of-Use, Net - Disclosure of Net Change in Property, Machinery and Equipment (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of detailed information about property, plant and equipment [line items]      
Net book value at beginning of period $ 10,565 $ 11,232 $ 11,588
Capital expenditures 564 737 630
Stripping costs 18 22 38
Total capital expenditures 582 759 668
Disposals (63) (96) (49)
Reclassifications (88) (402) 6
Business combinations 11   6
Depreciation and depletion for the period (748) (633) (657)
Impairment losses (306) (64) (23)
Foreign currency translation effects 217 (231) (307)
Net book value at end of period 10,170 10,565 11,232
Cost [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Net book value at beginning of period 19,708 20,642 20,653
Net book value at end of period 20,296 19,708 20,642
Accumulated depreciation and depletion [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Net book value at beginning of period (9,143) (9,410) (9,065)
Net book value at end of period (10,126) (9,143) (9,410)
Land and mineral reserves [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Net book value at beginning of period 3,638 3,831  
Capital expenditures 47 46  
Stripping costs 18 22  
Total capital expenditures 65 68  
Disposals (26) (38)  
Reclassifications (31) (163)  
Depreciation and depletion for the period (134) (121)  
Impairment losses (87) (18)  
Foreign currency translation effects 139 79  
Net book value at end of period 3,564 3,638 3,831
Land and mineral reserves [member] | Cost [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Net book value at beginning of period 4,606 4,789  
Net book value at end of period 4,741 4,606 4,789
Land and mineral reserves [member] | Accumulated depreciation and depletion [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Net book value at beginning of period (968) (958)  
Net book value at end of period (1,177) (968) (958)
Building [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Net book value at beginning of period 1,048 1,262  
Capital expenditures 35 28  
Total capital expenditures 35 28  
Disposals (7) (8)  
Reclassifications (1) (23)  
Depreciation and depletion for the period (99) (61)  
Impairment losses (54) (17)  
Foreign currency translation effects 42 (133)  
Net book value at end of period 964 1,048 1,262
Building [member] | Cost [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Net book value at beginning of period 2,374 2,633  
Net book value at end of period 2,438 2,374 2,633
Building [member] | Accumulated depreciation and depletion [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Net book value at beginning of period (1,326) (1,371)  
Net book value at end of period (1,474) (1,326) (1,371)
Machinery and equipment [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Net book value at beginning of period 4,670 5,104  
Capital expenditures 482 663  
Total capital expenditures 482 663  
Disposals (30) (50)  
Reclassifications (56) (203)  
Business combinations 11    
Depreciation and depletion for the period (515) (451)  
Impairment losses (165) (29)  
Foreign currency translation effects 57 (364)  
Net book value at end of period 4,454 4,670 5,104
Machinery and equipment [member] | Cost [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Net book value at beginning of period 11,519 12,185  
Net book value at end of period 11,929 11,519 12,185
Machinery and equipment [member] | Accumulated depreciation and depletion [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Net book value at beginning of period (6,849) (7,081)  
Net book value at end of period (7,475) (6,849) (7,081)
Construction in progress [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Net book value at beginning of period 1,209 1,035  
Reclassifications   (13)  
Foreign currency translation effects (21) 187  
Net book value at end of period 1,188 1,209 1,035
Construction in progress [member] | Cost [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Net book value at beginning of period 1,209 1,035  
Net book value at end of period $ 1,188 $ 1,209 $ 1,035