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Group Statement of Changes in Equity - USD ($)
$ in Millions
Total
Adjustment for transition to new accounting pronouncements
 [1]
Restated opening balance
Total
Total
Adjustment for transition to new accounting pronouncements
 [1]
Total
Restated opening balance
Share capital
Share capital
Restated opening balance
Share premium
Share premium
Restated opening balance
Other reserves
Other reserves
Restated opening balance
Retained earnings
Retained earnings
Adjustment for transition to new accounting pronouncements
Retained earnings
Restated opening balance
Non-controlling interests
Non-controlling interests
Adjustment for transition to new accounting pronouncements
 [1]
Non-controlling interests
Restated opening balance
Opening balance at Dec. 31, 2018 $ 49,823 $ (115) $ 49,708 $ 43,686 $ (113) $ 43,573 $ 3,688 $ 3,688 $ 4,312 $ 4,312 $ 8,661 $ 8,661 $ 27,025 $ (113) [1] $ 26,912 $ 6,137 $ (2) $ 6,135
Total comprehensive income [2] 7,318     8,351             519   7,832     (1,033)    
Currency translation arising on Rio Tinto Limited's share capital [3] (29)     (29)     (29)                      
Dividends (10,710)     (10,334)                 (10,334)     (376)    
Share buy-back [4] (1,135)     (1,135)     (4)       4   (1,135)     0    
Companies no longer consolidated (32)                             (32)    
Own shares purchased from Rio Tinto shareholders to satisfy share awards to employees/ share options [5] (106)     (106)             (63)   (43)          
Change in equity interest held by Rio Tinto [6] 0     85                 85     (85)    
Treasury shares reissued and other movements 1     1         1                  
Equity issued to holders of non-controlling interests 101                             101    
Employee share awards charged to the income statement 126     126             56   70          
Closing balance at Dec. 31, 2019 45,242     40,532     3,655   4,313   9,177   23,387 0   4,710    
Total comprehensive income [2] 12,984     12,201             2,798   9,403     783    
Currency translation arising on Rio Tinto Limited's share capital [3] 333     333     333                      
Dividends (6,821)     (6,132)                 (6,132)     (689)    
Share buy-back [4] (1)     (1)                 (1)          
Own shares purchased from Rio Tinto shareholders to satisfy share awards to employees/ share options [5] (107)     (107)             (76)   (31)          
Change in equity interest held by Rio Tinto [6] 0     84                 84     (84)    
Treasury shares reissued and other movements 1     1         1                  
Equity issued to holders of non-controlling interests 129                             129    
Employee share awards charged to the income statement 143     143             61   82          
Closing balance at Dec. 31, 2020 51,903     47,054     3,988   4,314   11,960   26,792 $ 0   4,849    
Total comprehensive income [2] 21,305     19,896             (1,916)   21,812     1,409    
Currency translation arising on Rio Tinto Limited's share capital [3] (211)     (211)     (211)                      
Dividends (16,475)     (15,385)                 (15,385)     (1,090)    
Own shares purchased from Rio Tinto shareholders to satisfy share awards to employees/ share options [5] (113)     (113)             (95)   (18)          
Change in equity interest held by Rio Tinto [6] 0     76                 76     (76)    
Treasury shares reissued and other movements 6     6         6                  
Equity issued to holders of non-controlling interests 66                             66    
Employee share awards charged to the income statement 109     109             49   60          
Closing balance at Dec. 31, 2021 $ 56,590     $ 51,432     $ 3,777   $ 4,320   $ 9,998   $ 33,337     $ 5,158    
[1] Impact of the transition to new accounting pronouncements; IFRS 16 “Leases” and IFRIC 23 “Uncertainty over Income Tax Treatments” on 1 January 2019.
[2] 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.
[3] Refer to note 1(d).
[4] In 2021, we did not undertake a share buy-back programme. In 2020, the total amount of US$1 million related to own shares purchased that were previously not recognised as a financial liability in the previous year. The total cash outflow in 2020 relating to own shares purchased was US$208 million. In 2019 US$1,135 million shown above relates to own shares purchased from the owners of Rio Tinto as per the cash flow statement of US$1,552 million and a financial liability recognised in respect of an irrevocable contract in place at the reporting date to cover the share buy-back programme, less amounts paid during the year in respect of a similar irrevocable contract in place at the beginning of the year.
[5] Net of contributions received from employees for share awards.
[6] Includes accrual of interest on funding balances with holders of non-controlling interests in Oyu Tolgoi. Refer to note 1(xii) and note 32(l). On 25 January 2022, Turquoise Hill agreed to waive the full amount of funding balances and interest; refer to note 45.