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Share-based payments (Tables) | 12 Months Ended
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Dec. 31, 2018
Disclosure Of Terms And Conditions Of Sharebased 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 plans), is set out in the table below.
| Charge recognised for the year | Liability at the end of the year
| 2018 | 2017 | 2016 | 2018 | 2017
| US$m | US$m | US$m | US$m | US$m
Equity-settled plans | 118 | 88 | 116 | - | -
Cash-settled plans | 4 | 3 | - | 16 | 15
Total | 122 | 91 | 116 | 16 | 15
Summary of options outstanding and exercisable | A summary of the status of the companies’ equity-settled share option plans at 31 December 2018 is presented below.
Options outstanding and exercisable at 31 December 2018 | Number | Weighted average exercise price per option £/A$ | Weighted average remaining contractual life Years | Aggregate intrinsic value 2018 US$m
Rio Tinto plc Share Option Plan (exercise price £16 – £25) | 23,659 | 17 | 0.22 | 1
Rio Tinto Limited Share Option Plan (exercise price A$33) | 16,455 | 33 | 0.21 | -
| 40,114 |  |  | 1
Performance share plans [member] |
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |
Summary of non-vested and vested shares | Performance Share Awards (granted under either the Performance Share Plans or the Equity Incentive Plans)
| Rio Tinto plc awards | Rio Tinto Limited awards
| 2018 number | Weighted average fair value at grant date 2018 £ | 2017 number | Weighted average fair value at grant date 2017 £ | 2018 number | Weighted average fair value at grant date 2018 A$ | 2017 number | Weighted average fair value at grant date 2017 A$
Non-vested shares at 1 January | 3,555,274 | 20.47 | 2,883,053 | 18.27 | 1,609,154 | 40.13 | 1,590,957 | 37.52
Awarded | 801,047 | 26.87 | 1,198,677 | 24.64 | 387,298 | 53.85 | 529,776 | 45.84
Forfeited | (188,761) | 21.45 | (199,435) | 16.28 | (36,530) | 43.83 | (36,716) | 36.59
Failed performance conditions | (107,625) | 14.54 | (161,966) | 16.25 | (54,322) | 27.67 | (113,857) | 30.89
Vested | (214,853) | 21.57 | (165,055) | 21.51 | (108,321) | 40.85 | (84,284) | 40.79
Transfers from equity to cash-settled (a) | - | - | - | - | - | - | (276,722) | 40.11
Non-vested shares at 31 December | 3,845,082 | 21.86 | 3,555,274 | 20.47 | 1,797,279 | 43.34 | 1,609,154 | 40.13
| 2018 number | Weighted average share price 2018 £ | 2017 number | Weighted average share price 2017 £ | 2018 number | Weighted average share price 2018 A$ | 2017 number | Weighted average share price 2017 A$
Vested awards settled in shares during the year (including dividend shares applied on vesting) | 248,965 | 42.57 | 188,383 | 31.04 | 105,374 | 82.97 | 73,311 | 63.09
Vested awards settled in cash during the year (including dividend shares applied on vesting) | 991 | 42.40 | - | - | 9,959 | 82.08 | 5,010 | 62.81
(a) | In 2017, an agreement was reached between the Group and a former director to settle any of his future vested awards in cash rather than equity.
Share Incentive Plans |
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |
Summary of non-vested and vested shares | Notes to the 2018 financial statements continued 43 Share-based payments continued Management Share Awards, Bonus Deferral Awards (granted under the Management Share Plans, Bonus Deferral Plans or Equity Incentive Plans), Global Employee Share Plans and UK Share Plan (combined)
| Rio Tinto plc awards (a) | Rio Tinto Limited awards
| 2018 number | Weighted average fair value at grant date 2018 £ | 2017 number | Weighted average fair value at grant date 2017 £ | 2018 number | Weighted average fair value at grant date 2018 A$ | 2017 number | Weighted average fair value at grant date 2017 A$
Non-vested awards at 1 January | 3,473,092 | 27.23 | 3,305,966 | 26.00 | 2,933,237 | 54.15 | 2,986,080 | 53.32
Awarded | 1,135,103 | 39.49 | 1,499,374 | 32.50 | 943,315 | 78.36 | 1,156,078 | 61.05
Forfeited | (250,853) | 30.26 | (159,669) | 29.46 | (185,062) | 64.60 | (127,905) | 53.61
Cancelled | (33,563) | 26.52 | (51,773) | 25.82 | (36,613) | 52.84 | (95,203) | 51.18
Vested | (1,281,759) | 27.54 | (1,120,806) | 30.41 | (1,040,947) | 55.30 | (985,813) | 60.06
Non-vested shares at 31 December | 3,042,020 | 31.43 | 3,473,092 | 27.23 | 2,613,930 | 61.71 | 2,933,237 | 54.15
Comprising: |  |  |  |  |  |  |  |
– Management Share Awards | 1,666,082 | 32.52 | 1,897,318 | 27.99 | 1,520,292 | 64.06 | 1,617,838 | 55.42
– Bonus Deferral Awards | 203,900 | 37.86 | 281,994 | 25.53 | 127,423 | 71.93 | 153,966 | 52.83
– Global Employee Share Plan | 1,102,322 | 28.68 | 1,196,937 | 26.42 | 966,215 | 56.66 | 1,161,433 | 52.54
– UK Share Plan | 69,716 | 29.90 | 96,843 | 27.14 | - | - | - | -
| 2018 number | Weighted average fair value at grant date 2018 £ | 2017 number | Weighted average fair value at grant date 2017 £ | 2018 number | Weighted average fair value at grant date 2018 A$ | 2017 number | Weighted average fair value at grant date 2017 A$
Vested awards settled in shares during the year (including dividend shares applied on vesting): |  |  |  |  |  |  |  |
– Management Share Awards | 669,678 | 40.03 | 653,776 | 35.33 | 570,173 | 80.87 | 577,083 | 67.93
– Bonus Deferral Awards | 221,198 | 37.69 | 170,036 | 34.44 | 108,001 | 75.36 | 88,644 | 69.98
– Global Employee Share Plan | 451,710 | 39.06 | 382,585 | 33.56 | 473,420 | 78.78 | 466,308 | 65.10
– UK Share Plan | 16,968 | 38.21 | 11,120 | 34.56 | - | - | - | -
(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.

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