Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
-Paragraph 6A
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Nominal or face amount used to calculate payment on derivative.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 181
-Publisher FASB
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Financial and Other Derivative Instruments (Cumulative Gross Volume of Derivative Contracts) (Details) - 6 months ended Jun. 30, 2025	CAD ($) MWh MMBTU T	USD ($)
Natural gas (MMBtu)
Derivative [Line Items]
Commodity, energy measures \| MMBTU	2,247,537,487
Electricity (MWh)
Derivative [Line Items]
Commodity, energy measures	44,132,344
Foreign currency exchange ($ CAD)
Derivative [Line Items]
Commodity, monetary measure \| $	$ 76,295,577
FTR (MWh)
Derivative [Line Items]
Commodity, energy measures	177,114
Renewable Energy Certificates (MWh)
Derivative [Line Items]
Commodity, energy measures	13,834,765
Carbon emissions (Metric Tons)
Derivative [Line Items]
Commodity, mass measure \| T	1,280,358
Interest rate contracts ($ USD)
Derivative [Line Items]
Commodity, monetary measure \| $		$ 500,000,000