v3.24.0.1
Property, plant and equipment (Tables)
 12 Months Ended
Dec. 31, 2023
Disclosure of detailed information about property, plant and equipment [abstract]  
Schedule of property, plant and equipment
Owned AssetsRight-of-
use lease
assets
(millions)
Network
assets
Buildings and
leasehold
improvements
Computer equipment, furniture,
and
other
Assets
under
construction		TotalBuildingsTotal
At cost
As at January 1, 2022$48 $119 $231 $26 $424 $317 $741 
Additions1 8 22 61 92 87 179 
Additions from acquisition

— 2 1 — 3 2 5 
Dispositions, retirements and other(1)(8)(15)— (24)(11)(35)
Transfers3 22 27 (52)— — — 
Foreign exchange(2)(5)(9)(2)(18)(10)(28)
As at December 31, 2022$49 $138 $257 $33 $477 $385 $862 
Additions3 3 19 54 79 92 171 
Additions from acquisition
14(c)
— 10 5 — 15 19 34 
Dispositions, retirements and other— (1)(9)— (10)(13)(23)
Transfers7 8 35 (50)— — — 
Foreign exchange— 1 1 — 2 4 6 
As at December 31, 2023$59 $159 $308 $37 $563 $487 $1,050 
Accumulated depreciation
As at January 1, 2022$26 $45 $138 $— $209 $127 336 
Depreciation7 17 43 — 67 57 124 
Dispositions, retirements and other(1)(8)(15)— (24)(11)(35)
Foreign exchange(1)(1)(6)— (8)(4)(12)
As at December 31, 2022$31 $53 $160 $— $244 $169 $413 
Depreciation8 22 46 — 76 65 141 
Dispositions, retirements and other— (1)(9)— (10)(13)(23)
Foreign exchange— 1 — — 1 1 2 
As at December 31, 2023$39 $75 $197 $— $311 $222 $533 
Net Book Value
As at December 31, 2022$18 $85 $97 $33 $233 $216 $449 
As at December 31, 2023$20 $84 $111 $37 $252 $265 $517