XML 489 R9.htm IDEA: XBRL DOCUMENT v3.20.4
Group statement of changes in equity (Parenthetical) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share buy-back [1] $ 1 $ (1,135) $ (5,704)
Own shares purchased from owners of Rio Tinto $ 208 $ 1,552 $ 5,386
[1] In 2020, the amount of US$1 million together with the amounts paid during the year in respect of an irrevocable contract in place at the beginning of the year to cover the share buy-back programme totalled US$208 million as reported in the cash flow statement. In 2019, the total amount of US$1,135 million (2018: US$5,704 million) included own shares purchased from the owners of Rio Tinto as per the cash flow statement of US$1,552 million (2018: US$5,386 million) and a financial liability recognised in respect of an irrevocable contract in place as 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.