v3.25.0.1
Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Indefinite-Lived Intangible Assets
AccumulatedNet Book
($ millions)
CostAmortizationValue
2024
Computer software1,035 (493)542 
Land, transmission and water rights1,188 (210)978 
Other143 (95)48 
Assets under construction93 — 93 
2,459 (798)1,661 
2023
Computer software1,040 (528)512 
Land, transmission and water rights1,071 (182)889 
Other132 (81)51 
Assets under construction58 — 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.
20242023
(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
AccumulatedNet Book
($ millions)
CostAmortizationValue
2024
Computer software1,035 (493)542 
Land, transmission and water rights1,188 (210)978 
Other143 (95)48 
Assets under construction93 — 93 
2,459 (798)1,661 
2023
Computer software1,040 (528)512 
Land, transmission and water rights1,071 (182)889 
Other132 (81)51 
Assets under construction58 — 58 
2,301 (791)1,510