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INVENTORY | 12 Months Ended
--- | ---
Dec. 31, 2018
Inventories [Abstract] |
INVENTORY | INVENTORY
US$ MILLIONS |  | 2018 |  | 2017
Current: |  |  |  |
Natural gas inventory |  | $ | 94 |  |  | $ | 84 |
Raw materials and other |  | 47 |  |  | 24 |
Carrying amount of inventories |  | $ | 141 |  |  | $ | 108 |
During the year ended December 31, 2018, Brookfield Infrastructure recognized $502 million (2017: $418 million, 2016: $154 million) worth of inventories as an expense in the Consolidated Statements of Operating Results and $nil (2017: $nil, 2016: $nil) relating to impairments of inventory.

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