XML 60 R40.htm IDEA: XBRL DOCUMENT v3.25.0.1

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2024

Accounting Policies [Abstract]

Schedule of Property Plant and Equipment

The service life ranges and weighted average remaining service life of PPE 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
Distribution
Electric						5-80			32						5-80			31
Gas						18-83			37						18-95			38
Transmission
Electric						20-85			42						20-90			41
Gas						10-80			35						10-85			36
Generation						2-95			22						2-95			23
Other						3-80			13						3-80			10

($ millions)						Cost						Accumulated Depreciation						Net Book Value
2024
Distribution
Electric						15,771						(4,078)						11,693
Gas						7,148						(1,866)						5,282
Transmission
Electric						23,084						(4,865)						18,219
Gas						2,937						(894)						2,043
Generation						8,056						(3,110)						4,946
Other						5,014						(1,809)						3,205
Assets under construction						3,578						—						3,578
Land						490						—						490
						66,078						(16,622)						49,456

2023
Distribution
Electric						14,352						(3,708)						10,644
Gas						6,682						(1,736)						4,946
Transmission
Electric						19,886						(4,267)						15,619
Gas						2,751						(843)						1,908
Generation						7,192						(2,739)						4,453
Other						4,444						(1,645)						2,799
Assets under construction						2,581						—						2,581
Land						435						—						435
						58,323						(14,938)						43,385

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

X

- References

No definition available.

+ Details

Name:	us-gaap_AccountingPoliciesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- 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

+ Details

Name:	us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of public utility physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation expense and method used, including composite depreciation, and accumulated depreciation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 980
-SubTopic 20
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481834/980-20-45-1

+ Details

Name:	us-gaap_ScheduleOfPublicUtilityPropertyPlantAndEquipmentTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration