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Dividends (Tables)
12 Months Ended
Dec. 31, 2021
Disclosure Of Dividends [Abstract]  
Summary of dividends paid

2021
US$m
2020
US$m
2019
US$m
Rio Tinto plc previous year final dividend payable3,809 2,783 2,245 
Rio Tinto plc previous year special dividend payable1,146 — 3,032 
Rio Tinto plc interim dividend payable4,627 1,937 1,930 
Rio Tinto plc interim special dividend payable2,276 — 780 
Rio Tinto Limited previous year final dividend payable1,138 857 666 
Rio Tinto Limited previous year special dividend payable343 — 900 
Rio Tinto Limited interim dividend payable1,372 555 556 
Rio Tinto Limited interim special dividend payable674 — 225 
Dividends payable during the year15,385 6,132 10,334 
Amount of unclaimed dividends during the year(28)— — 
Dividends paid during the year15,357 6,132 10,334 
Dividends per share: Ordinary - paid during the year685.0 c386.0 c331.0 c
Dividends per share: Special - paid during the year278.0 c— 304.0 c
Ordinary dividends per share: proposed in the announcement of the results for the year417.0 c309.0 c231.0 c
Special dividends per share: proposed in the announcement of the results for the year62.0 c93.0 c— 
Summary of dividends per share
Dividends
per share
2021
Dividends
per share
2020
Dividends
per share
2019
Rio Tinto plc previous year final (pence)221.86 p177.47 p135.96 p
Rio Tinto plc previous year special (pence)66.77 p— 183.55 p
Rio Tinto plc interim (pence)270.84 p119.74 p123.32 p
Rio Tinto plc interim special (pence)133.26 p— 49.82 p
Rio Tinto Limited previous year final – fully franked at 30% (Australian cents)
397.48 c349.74 c250.89 c
Rio Tinto Limited previous year special – fully franked at 30% (Australian cents)
119.63 c— 338.70 c
Rio Tinto Limited interim – fully franked at 30% (Australian cents)
509.42 c216.47 c219.08 c
Rio Tinto Limited interim special – fully franked at 30% (Australian cents)
250.64 c— 88.50 c
Summary of number of shares dividend distributed
Number of
shares
2021
(millions)
Number of
shares
2020
(millions)
Number of
shares
2019
(millions)
Rio Tinto plc previous year final and special when paid1,247.6 1,246.4 1,265.0 
Rio Tinto plc interim final and special when paid1,247.8 1,246.5 1,256.4 
Rio Tinto Limited previous year final and special when paid371.2 371.2 371.2 
Rio Tinto Limited interim and special when paid371.2 371.2 371.2