v3.25.4
INTANGIBLE ASSETS
 12 Months Ended
Dec. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
INTANGIBLE ASSETS INTANGIBLE ASSETS

As at December 31, 2025 (millions of dollars)
Intangible
Assets		Accumulated
Amortization		Development
in Progress
Total
Computer applications software1,585 960 29 654 
Other5 5 — — 
1,590 965 29 654 

As at December 31, 2024 (millions of dollars)
Intangible
Assets		Accumulated
Amortization		Development
in Progress
Total
Computer applications software1,481 872 51 660 
Other6 5 — 1 
1,487 877 51 661 
Financing charges capitalized on intangible assets under development were $3 million in 2025 (2024 - $4 million). The estimated annual amortization expense for intangible assets is as follows: 2026 - $91 million; 2027 - $88 million; 2028 - $83 million; 2029 - $74 million; and 2030 - $66 million.