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Employee Benefits (Tables) | 12 Months Ended
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Dec. 31, 2022
Text Block [abstract] |
Summary of employee benefits expense |
|  | 2022 US$m |  |  | 2021 US$m |  |  | 2020 US$m |
Employee benefits |  |  | 415 |  |  |  | 217 |  |  |  | 252 |
Share-based payments |  |  | 26 |  |  |  | 12 |  |  |  | 19 |
Defined contribution plan costs |  |  | 41 |  |  |  | 26 |  |  |  | 27 |
Defined benefit plan expense |  |  | 9 |  |  |  | 1 |  |  |  | 2 |
|  |  | 491 |  |  |  | 256 |  |  |  | 300 |
Summary of information about key management personnel compensation | Key management personnel (KMP) compensation for the financial year was as follows:
|  | 2022 US$ |  |  | 2021 US$ |  |  | 2020 US$ |
Short-term employee benefits 1 |  |  | 5,730,340 |  |  |  | 6,626,354 |  |  |  | 5,868,476 |
Post-employment benefits 1 |  |  | 155,086 |  |  |  | 88,396 |  |  |  | 63,805 |
Share-based payments 2 |  |  | 3,114,043 |  |  |  | 5,697,529 |  |  |  | 7,201,653 |
Long-term employee benefits |  |  | 4,300 |  |  |  | 717,223 |  |  |  | 515,585 |
Termination benefits |  |  | 152,531 |  |  |  | 2,447,525 |  |  |  | 390,087 |
|  |  | 9,156,300 |  |  |  | 15,577,027 |  |  |  | 14,039,606 |
1. | The 2021 comparatives for short-term employee benefits and post-employment benefits have been restated to include the superannuation component of the 2021 EIS cash and other cash bonuses for three key management personnel, increasing the short-term employee benefits expense by $26,676 to $6,626,354 and the post-employee benefits expense by $10,881 to $ 88,396.
2. | The 2021 comparative for share-based payments has been restated to include amortisation of the fair value of 2021 performance rights for two key management personnel, increasing the expense by $88,507 to $5,697,529.
Summary of number of awards and movements for all share plans | The number of awards and movements for all share plans are summarised as follows:
|  | Number of performance awards |
|  | Employee plans |  |  | Executive plans |
|  | WEP |  |  | SWEP |  |  | STA 4 |  |  | LTA 4 |
Year ended 31 December 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Opening balance |  |  | 5,649,783 |  |  |  | - |  |  |  | 994,436 |  |  |  | 2,379,220 |
Granted during the year 1,2 ,3 |  |  | 3,017,366 |  |  |  | 3,046,963 |  |  |  | 495,800 |  |  |  | 764,171 |
Vested during the year |  |  | (1,498,065 | ) |  |  | (38,146 | ) |  |  | (450,609 | ) |  |  | (191,736 | )
Forfeited during the year |  |  | (539,403 | ) |  |  | (124,741 | ) |  |  | (46,430 | ) |  |  | (397,233 | )
Awards at 31 December 2022 |  |  | 6,629,681 |  |  |  | 2,884,076 |  |  |  | 993,197 |  |  |  | 2,554,422 |
|  |  | US$m |  |  |  | US$m |  |  |  | US$m |  |  |  | US$m |
Fair value of awards granted during the year |  |  | 49 |  |  |  | 60 |  |  |  | 9 |  |  |  | 13 |
|  | Number of performance awards |
|  | Employee plans |  |  | Executive plans |
|  | WEP |  |  | SWEP |  |  | STA 4 |  |  | LTA 4 |
Year ended 31 December 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Opening balance |  |  | 5,618,603 |  |  |  | - |  |  |  | 975,295 |  |  |  | 2,798,305 |
Granted during the year 1,2,3 |  |  | 2,507,167 |  |  |  | - |  |  |  | 353,412 |  |  |  | 553,849 |
Vested during the year |  |  | (1,999,676 | ) |  |  | - |  |  |  | (307,402 | ) |  |  | (322,746 | )
Forfeited during the year |  |  | (476,311 | ) |  |  | - |  |  |  | (26,869) |  |  |  | (650,188 | )
Awards at 31 December 2021 |  |  | 5,649,783 |  |  |  | - |  |  |  | 994,436 |  |  |  | 2,379,220 |
|  |  | US$m |  |  |  | US$m |  |  |  | US$m |  |  |  | US$m |
Fair value of awards granted during the year |  |  | 39 |  |  |  | - |  |  |  | 7 |  |  |  | 9 |
1. | For the purpose of valuation, the share price on grant date for the 2022 WEP allocations was $16.30 (2021: $15.17).
2. | For the purpose of valuation, the share price on grant date for the 2022 SWEP allocations was $19.74 (202 1 : nil).
3. | For the purpose of valuation, the share price on grant date for Restricted Shares was $19.20 and $19.27 (2021: $20.18) and Performance Rights was $13.08 and $13.71 (2021: $11.66 and $14.44).
4. | Includes awards issued under EIP and EIS.

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