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Share-based payments (Tables)
 12 Months Ended
Dec. 31, 2020
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Charge has been recognised in income statement for Rio Tinto's share-based incentive plans, and the related liability (for cash-settled plans)
The charge that has been recognised in the income statement for Rio Tinto’s share-based incentive plans, and the related liability (for cash-settled awards), is set out in the table below.

Charge recognised for the yearLiability at the end of the year

2020
US$m
2019
US$m
2018
US$m
2020
US$m
2019
US$m
Equity-settled awards131 118 118 — — 
Cash-settled awards7 5 4 7 19 
Total
138 123 122 7 19 
Performance share plans  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Summary of non-vested and vested shares

Rio Tinto plc awards
Rio Tinto Limited awards
2020
number
Weighted
average fair
value at grant
date
2020
£
2019
number
Weighted
average fair
value at grant
date
2019
£
2020
number
Weighted
average fair
value at grant
date
2020
A$
2019
number
Weighted
average fair
value at grant
date
2019
A$
Unvested awards at 1 January3,803,394 22.20 3,845,082 21.86 1,636,517 45.11 1,797,279 43.34 
Awarded
716,111 13.55 755,735 24.68 198,863 33.56 297,189 54.55 
Forfeited
(136,030)21.13 (122,961)23.95 (178,921)46.37 (126,775)44.02 
Failed performance conditions
(145,661)16.64 (384,130)23.79 (63,852)33.38 (188,956)46.42 
Vested
(459,773)20.55 (290,332)21.36 (201,234)41.21 (142,220)41.72 
Unvested awards at 31 December3,778,041 21.01 3,803,394 22.20 1,391,373 44.40 1,636,517 45.11 


Rio Tinto plc awards
Rio Tinto Limited awards

2020
number
Weighted
average fair
value at grant
date
2020
£
2019
number
Weighted
average fair
value at grant
date
2019
£
2020
number
Weighted
average fair
value at grant
date
2020
A$
2019
number
Weighted
average fair
value at grant
date
2019
A$
Vested awards settled in shares during the year (including dividend shares applied on vesting)
476,602 43.13 339,821 45.52 217,287 93.48 151,607 100.30 
Vested awards settled in cash during the year (including dividend shares applied on vesting)
108,887 43.13 1,279 43.65 28,208 93.82 1,347 92.97 
Share Incentive Plans  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Summary of non-vested and vested shares
Rio Tinto plc awards(a)
Rio Tinto Limited awards

2020
number
Weighted
average fair
value at grant
date
2020
£
2019
number
Weighted
average fair
value at grant
date
2019
£
2020
number
Weighted
average fair
value at grant
date
2020
A$
2019
number
Weighted
average fair
value at grant
date
2019
A$
Unvested awards at 1 January(b)
2,613,013 37.14 3,042,020 31.43 2,273,669 75.46 2,613,930 61.71 
Awarded
1,190,528 36.27 1,043,817 40.41 921,070 83.20 846,008 86.56 
Forfeited
(99,038)44.42 (224,402)39.46 (60,935)85.01 (174,025)72.18 
Cancelled
(33,955)37.72 (24,043)32.87 (50,354)71.45 (35,481)60.91 
Vested
(1,019,687)34.46 (1,224,379)25.40 (866,716)65.19 (976,763)49.39 
Unvested awards at 31 December(b)
2,650,861 37.50 2,613,013 37.14 2,216,734 82.52 2,273,669 75.46 
Comprising:
– Management Share Awards
1,352,759 38.73 1,398,039 38.68 1,291,203 85.80 1,363,601 78.67 
– Bonus Deferral Awards
211,905 36.14 192,878 41.95 53,324 85.53 87,930 87.81 
– Global Employee Share Plan
1,050,608 36.06 982,932 33.98 872,207 77.47 822,138 68.82 
– UK Share Plan
35,589 41.54 39,164 37.86 — — — — 

2020
number
Weighted
average fair
value at grant
date
2020
£
2019
number
Weighted
average fair
value at grant
date
2019
£
2020
number
Weighted
average fair
value at grant
date
2020
A$
2019
number
Weighted
average fair
value at grant
date
2019
A$
Vested awards settled in shares during the year (including dividend shares applied on vesting):
– Management Share Awards
707,133 42.26 681,242 43.68 640,948 97.74 582,948 93.05 
– Bonus Deferral Awards
111,233 49.71 163,076 42.53 63,404 101.96 85,142 97.30 
– Global Employee Share Plan
401,169 43.82 543,426 43.04 299,381 98.60 421,614 91.50 
– UK Share Plan
2,392 45.73 34,196 42.21 — — — — 
Vested awards settled in cash during the year (including dividend shares applied on vesting):
– Bonus Deferral Awards19,617 48.34 — — — — — — 
(a)Awards of Rio Tinto American Depository Receipts (ADRs) under the Global Employee Share Plan are included within the totals for Rio Tinto plc awards for the purpose of these tables.