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Company statement of changes in equity - USD ($)
$ in Millions
Total
Share capital [member]
Share premium account [Member]
Other reserves [Member]
Retained earnings [Member]
Rio Tinto plc [member]
Rio Tinto plc [member]
Share capital [member]
Rio Tinto plc [member]
Share premium account [Member]
Rio Tinto plc [member]
Other reserves [Member]
Rio Tinto plc [member]
Retained earnings [Member]
Opening balance at Dec. 31, 2014 $ 54,594 $ 4,765 $ 4,288 $ 11,122 $ 26,110          
Profit/(loss) after tax for the year (1,719)                  
Dividends (note 11) (4,391)       (4,076)          
Share buy-back         (1,946)          
Employee share options and other IFRS 2 charges to the income statement 134     56 78          
Closing balance at Dec. 31, 2015 44,128 4,174 4,300 9,139 19,736 $ 24,970 $ 224 $ 4,300 $ 11,988 $ 8,458
Profit/(loss) after tax for the year 4,776         6,875       6,875
Dividends (note 11) (3,077)       (2,725) (2,046)       (2,046)
Proceeds from issue of shares           5   4   1
Employee share options and other IFRS 2 charges to the income statement 125     61 64 58       58
Closing balance at Dec. 31, 2016 45,730 4,139 4,304 9,216 21,631 29,862 224 4,304 11,988 13,346
Profit/(loss) after tax for the year 8,851         7,816       7,816
Dividends (note 11) (4,653)       (4,250) (3,255)       (3,255)
Proceeds from issue of shares           2   2    
Share buy-back (2,397)       (2,312) (1,828) (4)   4 (1,828)
Employee share options and other IFRS 2 charges to the income statement 98     41 57 45       45
Closing balance at Dec. 31, 2017 $ 51,115 $ 4,360 $ 4,306 $ 12,284 $ 23,761 $ 32,642 $ 220 $ 4,306 $ 11,992 $ 16,124