Inventories

12 Months Ended

Dec. 31, 2019

Classes Of Inventories [Abstract]

Inventories

16. INVENTORIES

As at December 31,	2019		2018
Product
Refining and Marketing		874		703
Oil Sands		570		223
Deep Basin		1		-
Parts and Supplies		87		87
		1,532		1,013

During the year ended December 31, 2019, approximately $14,285 million of produced and purchased inventory was recorded as an expense (2018 – $15,664 million; 2017 – $12,856 million).

As at December 31, 2019, as a result of a decline in refined product prices, Cenovus recorded a write-down of its product inventory of $25 million from cost to net realizable value (2018 – $47 million).