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INVENTORY | 12 Months Ended
--- | ---
Dec. 31, 2021
Inventories [Abstract] |
INVENTORY | INVENTORY
US$ MILLIONS |  | 2021 |  | 2020
Natural gas inventory |  | $ | 132 |  |  | $ | 71 |
Raw materials and other |  | 268 |  |  | 150 |
Carrying amount of inventories |  | $ | 400 |  |  | $ | 221 |
Refer to Note 23, Direct Operating Costs, for further details on inventory expenses identified as “cost of inventory”

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