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INVENTORIES
12 Months Ended
Dec. 31, 2020
Inventories [Abstract]  
INVENTORIES INVENTORIES
ACCOUNTING POLICY
We measure inventories, including wireless devices and merchandise for resale, at the lower of cost (determined on a weighted average cost basis for wireless devices and accessories and a first-in, first-out basis for other finished goods and merchandise) and net realizable value. We reverse a previous writedown to net realizable value, not to exceed the original recognized cost, if the inventories later increase in value.

EXPLANATORY INFORMATION
As at December 31
(In millions of dollars) 20202019
 
Wireless devices and accessories399 380 
Other finished goods and merchandise 80 80 
 
Total inventories 479 460 
Cost of equipment sales and merchandise for resale includes $2,207 million of inventory costs for 2020 (2019 - $2,496 million).