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Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Indefinite-Lived Intangible Assets

									Accumulated						Net Book
($ millions)			Cost						Amortization						Value
2024
Computer software			1,035						(493)						542
Land, transmission and water rights			1,188						(210)						978
Other			143						(95)						48
Assets under construction			93						—						93
			2,459						(798)						1,661

2023
Computer software			1,040						(528)						512
Land, transmission and water rights			1,071						(182)						889
Other			132						(81)						51
Assets under construction			58						—						58
			2,301						(791)						1,510

Schedule of Intangible Assets

The service life ranges and weighted average remaining service life of finite-life intangible assets as at December 31 were as follows.

						2024									2023
(years)						Service Life Ranges			Weighted Average Remaining Service Life						Service Life Ranges			Weighted Average Remaining Service Life
Computer software						3-18			5						3-18			5
Land, transmission and water rights						30-85			52						30-90			52
Other						10-100			16						10-100			14

									Accumulated						Net Book
($ millions)			Cost						Amortization						Value
2024
Computer software			1,035						(493)						542
Land, transmission and water rights			1,188						(210)						978
Other			143						(95)						48
Assets under construction			93						—						93
			2,459						(798)						1,661

2023
Computer software			1,040						(528)						512
Land, transmission and water rights			1,071						(182)						889
Other			132						(81)						51
Assets under construction			58						—						58
			2,301						(791)						1,510

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- References

No definition available.

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- Definition

Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 55
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482640/350-30-55-40

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482665/350-30-50-2

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- Definition

Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance and exist in perpetuity, by either major class or business segment.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 55
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482640/350-30-55-40

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482665/350-30-50-2

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