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Inventory (Tables)	12 Months Ended
	Dec. 31, 2022
14. Inventory
Inventory	As at December 31 December 31 millions of dollars  2022 2021 Fuel  $ 404 $ 255 Materials  365 283 Total $ 769 $ 538

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Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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