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Non-cash operating items (Tables)
12 Months Ended
Dec. 31, 2023
Disclosure Changes In Non Cash Operating Items [Abstract]  
Schedule of Changes in Non-Cash Operating Items
The changes in non-cash operating items consist of the following:
20232022
Accounts receivable$3,863 $(124,631)
Fuel and natural gas in storage46,368 (21,140)
Supplies and consumables inventory(48,539)(24,088)
Income taxes recoverable(2,889)549 
Prepaid expenses(13,218)(4,269)
Accounts payable23,847 24,395 
Accrued liabilities(488)127,076 
Current income tax liability1,096 (2,741)
Asset retirements and environmental obligations(1,015)(22,342)
Net regulatory assets and liabilities(95,361)(174,427)
$(86,336)$(221,618)