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Group statement of changes in equity (Parenthetical) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2018
Share buy back | $ (1) | $ 1,133 | [1] |
Payments for entity's shares | 208 | 988 |  | $ 988
Retained earnings |  |  |  |
Share buy back | $ 1 | $ 1,133 | [1] |
[1] | Total amount of US$1,133 million includes own shares purchased from owners of Rio Tinto plc as per the cash flow statement of US$988 million adjusted for the movement in a financial liability recognised in respect of irrevocable contracts in place as at 30 June 2019 and 31 December 2018 to cover the share buy-back programme.

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