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GOODWILL (Tables)
 12 Months Ended
Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The Company's Goodwill balance on the Consolidated balance sheet is comprised of the following amounts:
at December 3120222021
(millions)Canadian
dollars		US
dollars		Canadian dollarsUS
dollars
Columbia Pipeline Group, Inc.9,948 7,351 9,303 7,351 
ANR2,634 1,946 2,464 1,946 
Great Lakes165 122 725 573 
North Baja65 48 61 48 
Tuscarora31 23 29 23 
 12,843 9,490 12,582 9,941 
Changes in Goodwill were as follows:
(millions of Canadian $)U.S. Natural
Gas Pipelines
Balance at January 1, 202112,679 
Foreign exchange rate changes(97)
Balance at December 31, 20211
12,582 
Great Lakes impairment charge(571)
Foreign exchange rate changes832 
Balance at December 31, 20221
12,843 
1Represents gross amount of goodwill as at December 31, 2022 of $14,578 million (2021 – $13,746 million), net of accumulated impairment of $1,735 million (2021 – $1,164 million).