v3.22.4
Property, plant and equipment (Tables)
 12 Months Ended
Dec. 31, 2022
Disclosure of detailed information about property, plant and equipment [abstract]  
Schedule of property, plant and equipment
Owned AssetsRight-of-
use lease
assets
(millions)Computer
hardware
and
network
assets		Buildings and
leasehold
improvements		Furniture
and
equipment		Assets
under
construction		TotalBuildingsTotal
At cost
As at January 1, 2021$46 $95 $207 $15 $363 $264 $627 
Additions4 23 43 23 93 62 155 
Dispositions, retirements and other(6)(3)(25)4 (30)(6)(36)
Transfers3 4 7 (14)— — — 
Foreign exchange1 — (1)(2)(2)(3)(5)
As at December 31, 2021$48 $119 $231 $26 $424 $317 $741 
Additions1 8 22 61 $92 87 179 
Additions from acquisition20(a)— 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 
Accumulated depreciation
As at January 1, 2021$23 $32 $126 $— 181 $84 265 
Depreciation8 15 38 — 61 54 115 
Dispositions, retirements and other(5)(3)(25)— (33)(6)(39)
Foreign exchange— 1 (1)— — (5)(5)
As at December 31, 2021$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 
Net Book Value
As at December 31, 2021$22 $74 $93 $26 $215 $190 $405 
As at December 31, 2022$18 $85 $97 $33 $233 $216 $449