XML 620 R140.htm IDEA: XBRL DOCUMENT v3.20.4
Property, plant and equipment - Summary of property, plant 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]      
Property, plant and equipment at beginning of period $ 56,307 $ 56,361  
Adjustment for transition to new accounting standard     $ (31)
Restated opening balance     56,330
Adjustment on currency translation 2,888 426  
Adjustments to capitalised closure costs 946 840  
Amounts capitalised 340 321 296
Additions 6,311 5,530  
Depreciation for the year (3,796) (3,979)  
Impairment charges (863) (3,476)  
Disposals (95) (72)  
Transfers and other movements (31) 387  
Property, plant and equipment at end of period 62,007 56,307 56,361
Non-current assets pledged as security 14,245 12,758  
Cost      
Disclosure of detailed information about property, plant and equipment [Line Items]      
Property, plant and equipment at beginning of period 112,285    
Property, plant and equipment at end of period 121,739 112,285  
Accumulated amortisation and impairment      
Disclosure of detailed information about property, plant and equipment [Line Items]      
Property, plant and equipment at beginning of period (55,978)    
Property, plant and equipment at end of period (59,732) (55,978)  
Mining properties and leases      
Disclosure of detailed information about property, plant and equipment [Line Items]      
Property, plant and equipment at beginning of period 10,402 11,063  
Adjustment for transition to new accounting standard     0
Restated opening balance     11,063
Adjustment on currency translation 457 27  
Adjustments to capitalised closure costs 946 840  
Amounts capitalised 0 0  
Additions 329 433  
Depreciation for the year (666) (729)  
Impairment charges (327) (1,339)  
Disposals (2) 0  
Transfers and other movements 34 107  
Property, plant and equipment at end of period 11,173 10,402 11,063
Non-current assets pledged as security 1,712 1,805  
Mining properties and leases | Cost      
Disclosure of detailed information about property, plant and equipment [Line Items]      
Property, plant and equipment at beginning of period 24,875    
Property, plant and equipment at end of period 25,052 24,875  
Mining properties and leases | Accumulated amortisation and impairment      
Disclosure of detailed information about property, plant and equipment [Line Items]      
Property, plant and equipment at beginning of period (14,473)    
Property, plant and equipment at end of period (13,879) (14,473)  
Land and buildings      
Disclosure of detailed information about property, plant and equipment [Line Items]      
Property, plant and equipment at beginning of period 6,403 6,263  
Adjustment for transition to new accounting standard     0
Restated opening balance     6,263
Adjustment on currency translation 307 72  
Adjustments to capitalised closure costs 0 0  
Amounts capitalised 0 0  
Additions 45 46  
Depreciation for the year (354) (381)  
Impairment charges (85) (96)  
Disposals (13) (9)  
Transfers and other movements 66 508  
Property, plant and equipment at end of period 6,369 6,403 6,263
Non-current assets pledged as security 494 571  
Land and buildings | Cost      
Disclosure of detailed information about property, plant and equipment [Line Items]      
Property, plant and equipment at beginning of period 11,517    
Property, plant and equipment at end of period 12,178 11,517  
Land and buildings | Accumulated amortisation and impairment      
Disclosure of detailed information about property, plant and equipment [Line Items]      
Property, plant and equipment at beginning of period (5,114)    
Property, plant and equipment at end of period (5,809) (5,114)  
Plant and equipment      
Disclosure of detailed information about property, plant and equipment [Line Items]      
Property, plant and equipment at beginning of period 31,491 32,019  
Adjustment for transition to new accounting standard     (31)
Restated opening balance     31,988
Adjustment on currency translation 1,758 286  
Adjustments to capitalised closure costs 0 0  
Amounts capitalised 0 0  
Additions 726 616  
Depreciation for the year (2,776) (2,869)  
Impairment charges (369) (1,115)  
Disposals (64) (44)  
Transfers and other movements 1,988 2,629  
Property, plant and equipment at end of period 32,754 31,491 32,019
Non-current assets pledged as security 5,065 5,111  
Plant and equipment | Cost      
Disclosure of detailed information about property, plant and equipment [Line Items]      
Property, plant and equipment at beginning of period 66,705    
Property, plant and equipment at end of period 71,603 66,705  
Plant and equipment | Accumulated amortisation and impairment      
Disclosure of detailed information about property, plant and equipment [Line Items]      
Property, plant and equipment at beginning of period (35,214)    
Property, plant and equipment at end of period (38,849) (35,214)  
Capital works in progress      
Disclosure of detailed information about property, plant and equipment [Line Items]      
Property, plant and equipment at beginning of period 8,011 7,016  
Adjustment for transition to new accounting standard     0
Restated opening balance     7,016
Adjustment on currency translation 366 41  
Adjustments to capitalised closure costs 0 0  
Amounts capitalised 340 321  
Additions 5,211 4,435  
Depreciation for the year 0 0  
Impairment charges (82) (926)  
Disposals (16) (19)  
Transfers and other movements (2,119) (2,857)  
Property, plant and equipment at end of period 11,711 8,011 $ 7,016
Non-current assets pledged as security 6,974 5,271  
Capital works in progress | Cost      
Disclosure of detailed information about property, plant and equipment [Line Items]      
Property, plant and equipment at beginning of period 9,188    
Property, plant and equipment at end of period 12,906 9,188  
Capital works in progress | Accumulated amortisation and impairment      
Disclosure of detailed information about property, plant and equipment [Line Items]      
Property, plant and equipment at beginning of period (1,177)    
Property, plant and equipment at end of period $ (1,195) $ (1,177)