v3.25.4
PROPERTY, PLANT AND EQUIPMENT
 12 Months Ended
Dec. 31, 2025
Property, plant and equipment [abstract]  
PROPERTY, PLANT AND EQUIPMENT PROPERTY, PLANT AND EQUIPMENT
ACCOUNTING POLICY
The following accounting policy applies to property, plant and equipment excluding right-of-use assets. Our accounting policy for right-of-use assets is included in note 9.

Recognition and measurement, including depreciation
We measure property, plant and equipment upon initial recognition at cost and begin recognizing depreciation when the asset is ready for its intended use. Subsequently, property, plant and equipment is carried at cost less accumulated depreciation and accumulated impairment losses.

Cost includes expenditures (capital expenditures) that are directly attributable to the acquisition of the asset. The cost of self-constructed assets includes:
•costs directly associated with bringing the assets to a working condition for their intended use, including the cost of materials and labour;
•expected costs of decommissioning the items and restoring the sites on which they are located (see note 24); and
•borrowing costs on qualifying assets.

We depreciate property, plant and equipment over its estimated useful life by charging depreciation expense to net income as follows:
AssetBasisEstimated useful life
BuildingsDiminishing balance
15 to 60 years
Cable and wireless networkStraight-line
3 to 40 years
Computer equipment and softwareStraight-line
4 to 10 years
Customer premise equipmentStraight-line
3 to 6 years
Leasehold improvementsStraight-lineOver shorter of estimated useful life or lease term
Equipment and vehiclesDiminishing balance
3 to 20 years

We calculate gains and losses on the disposal of property, plant and equipment by comparing the proceeds from the disposal with the item's carrying amount and recognize the gain or loss in net income.

We capitalize development expenditures if they meet the criteria for recognition as an asset and amortize them over their expected useful lives once the assets to which they relate are available for use. We expense research expenditures, maintenance costs, and training costs as incurred.

We recognize government financial assistance related to property, plant and equipment as a reduction of the cost or carrying amount of the asset when there is reasonable assurance we will comply with the conditions of the assistance and the assistance will be received.

Impairment testing, including recognition and measurement of an impairment charge
See "Impairment Testing" in note 10 for our policies relating to impairment testing and the related recognition and measurement of impairment charges. The impairment policies for property, plant and equipment are similar to the impairment policies for intangible assets with finite useful lives.

ESTIMATES
Components of an item of property, plant and equipment may have different useful lives. We make significant estimates when determining depreciation rates and asset useful lives, which require taking into account company-specific factors, such as our past experience and expected use, and industry trends, such as technological advancements. We monitor and
review residual values, depreciation rates, and asset useful lives at least once a year and change them if they are different from our previous estimates. We recognize the effect of changes in estimates in net income prospectively.

We use estimates to determine certain costs that are directly attributable to self-constructed assets. These estimates primarily include certain internal and external direct labour, overhead, and interest costs associated with the acquisition, construction, development, or betterment of our networks.

Furthermore, we use estimates as described in note 10 in determining the recoverable amount of property, plant and equipment.

JUDGMENTS
We make significant judgments in choosing methods for depreciating our property, plant and equipment that we believe most accurately represent the consumption of benefits derived from those assets and are most representative of the economic substance of the intended use of the underlying assets.

DETAILS OF PROPERTY, PLANT AND EQUIPMENT
The tables below summarize our property, plant and equipment as at December 31, 2025 and 2024.
(In millions of dollars)Land and
buildings		Cable and
wireless
networks		Computer
equipment
and software		Customer
premise
equipment		Leasehold
improvements		Equipment
and vehicles		Construction
in process		Total
owned
assets
Right-of-
use assets
(note 9)
Total
property,
plant and
equipment
Cost
As at January 1, 20252,005 32,150 7,914 3,205 843 1,527 2,734 50,378 4,047 54,425 
Additions and transfers from construction in process
45 2,916 1,256 365 21 139 (879)3,863 882 4,745 
Acquisitions from business combinations (note 3)
652 — 20 — 92 70 40 874 121 995 
Disposals and other(18)(870)(576)6 (71)(67)(98)(1,694)(253)(1,947)
As at December 31, 20252,684 34,196 8,614 3,576 885 1,669 1,797 53,421 4,797 58,218 
Accumulated depreciation
As at January 1, 2025714 17,342 5,988 2,417 496 1,044 — 28,001 1,352 29,353 
Depreciation118 2,146 908 477 51 90 — 3,790 455 4,245 
Disposals and other(1)(821)(564)(67)(68)(57)— (1,578)(109)(1,687)
As at December 31, 2025831 18,667 6,332 2,827 479 1,077 — 30,213 1,698 31,911 
Net carrying amount
As at January 1, 20251,291 14,808 1,926 788 347 483 2,734 22,377 2,695 25,072 
As at December 31, 20251,853 15,529 2,282 749 406 592 1,797 23,208 3,099 26,307 
(In millions of dollars)Land and
buildings		Cable and
wireless
networks		Computer
equipment
and software		Customer
premise
equipment		Leasehold
improvements		Equipment
and vehicles		Construction
in process		Total
owned
assets
Right-of-
use assets
(note 9)
Total
property,
plant and
equipment
Cost
As at January 1, 20241,447 30,499 7,931 3,003 817 1,451 2,264 47,412 3,744 51,156 
Additions and transfers from construction in process
296 2,466 425 285 37 121 470 4,100 649 4,749 
Disposals and other262 (815)(442)(83)(11)(45)— (1,134)(346)(1,480)
As at December 31, 20242,005 32,150 7,914 3,205 843 1,527 2,734 50,378 4,047 54,425 
Accumulated depreciation
As at January 1, 2024474 16,040 5,590 2,073 447 1,017 — 25,641 1,183 26,824 
Depreciation106 2,068 866 492 63 70 — 3,665 408 4,073 
Disposals and other134 (766)(468)(148)(14)(43)— (1,305)(239)(1,544)
As at December 31, 2024714 17,342 5,988 2,417 496 1,044 — 28,001 1,352 29,353 
Net carrying amount
As at January 1, 2024973 14,459 2,341 930 370 434 2,264 21,771 2,561 24,332 
As at December 31, 20241,291 14,808 1,926 788 347 483 2,734 22,377 2,695 25,072 

During the year ended December 31, 2025, we recognized $73 million (2024 - $134 million) in network capital expenditure-related government grants and received $55 million (2024 - $59 million) in cash.

During 2025, we recognized capitalized interest on property, plant and equipment at a weighted average rate of approximately 4.8% (2024 - 4.2%).
Annually, we perform an analysis to identify fully depreciated assets that have been retired from active use. In 2025, this resulted in an adjustment to cost and accumulated depreciation of $1,230 million (2024 - $1,281 million). The disposals had nil impact on the Consolidated Statements of Income.

Except for certain permitted liens (such as statutory rights of way, builder's liens, or tax liens), BNSI cannot grant or permit to exist any liens over its assets without the unanimous approval of its board and shareholders.