XML 696 R216.htm IDEA: XBRL DOCUMENT v3.20.4
Principal associates - Reconciliation of financial information for principal associates by carrying value (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of associates [Line Items]      
Consolidated sales revenue $ 44,611 $ 43,165 $ 40,522
(Loss)/profit after tax 10,400 6,972 13,925
Other comprehensive income/(loss) 2,584 346 (3,139)
Total comprehensive income/(loss) [1] 12,984 7,318 10,786
Non-current assets 76,535 70,499  
Current assets 20,855 17,303  
Non-current liabilities (33,880) (31,435)  
Net assets/(liabilities) 51,903 45,242  
Loans to equity accounted units 112 113  
Impairment loss recognised in profit or loss 904 3,487 $ 132
Boyne Smelters Limited      
Disclosure of associates [Line Items]      
Consolidated sales revenue 0 0  
(Loss)/profit after tax (198) (7)  
Other comprehensive income/(loss) 30 (3)  
Total comprehensive income/(loss) (168) (10)  
Non-current assets 1,037 1,229  
Current assets 98 96  
Current liabilities (146) (114)  
Non-current liabilities (779) (814)  
Net assets/(liabilities) 210 397  
Group's ownership interest 125 236  
Loans to equity accounted units 112 113  
Carrying value of Group's interest 237 $ 349  
Impairment loss recognised in profit or loss $ 200    
[1] Refer to Group statement of comprehensive income for further details. Adjustments to other reserves include currency translation attributable to owners of Rio Tinto, other than that arising on Rio Tinto Limited’s share capital.