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Goodwill and Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2023
Intangible assets and goodwill [abstract]  
Disclosure of Changes in Goodwill and Intangible Assets
Goodwill and intangible assets are comprised of the following:
2022
Cost
Accumulated
Amortization
and Impairment
Net Book
Value
Goodwill
$377.2 $55.4 $321.8 
Intellectual property
$111.3 $111.3 $— 
Other intangible assets
679.3 342.1 337.2 
Computer software assets
300.7 291.4 9.3 
$1,091.3 $744.8 $346.5 
2023
Cost
Accumulated
Amortization
and Impairment
Net Book
Value
Goodwill
$377.1 $55.4 $321.7 
Intellectual property
$111.3 $111.3 $— 
Other intangible assets
672.3 371.9 300.4 
Computer software assets
310.8 292.9 17.9 
$1,094.4 $776.1 $318.3 
The following table details the changes to the net book value of goodwill and intangible assets for the years indicated:
Note
Goodwill
Other
Intangible
Assets
Computer
Software
Assets
Total
Balance — January 1, 2022$324.2 $371.5 $10.5 $706.2 
Additions
— — 1.9 1.9 
Adjustment to acquisitions through business combination (i)
3(2.2)2.7 — 0.5 
Amortization
— (37.0)(3.1)(40.1)
Foreign exchange and other
(0.2)— — (0.2)
Balance — December 31, 2022321.8 337.2 9.3 668.3 
Additions
— — 11.4 11.4 
Amortization
— (36.8)(2.8)(39.6)
Foreign exchange and other
(0.1)— — (0.1)
Balance — December 31, 2023$321.7 $300.4 $17.9 $640.0 
(i)    In Q1 2022, we finalized the PCI purchase price allocation. In connection therewith, we adjusted our preliminary purchase price allocation by, among other things, increasing the carrying value of customer intangible assets by $2.7, and decreasing goodwill by $2.2. See note 3.
Disclosure of Assumptions for Annual Impairment Assessments of Goodwill We used the following assumptions for purposes of our Annual Impairment Assessments of goodwill for the periods shown:
AssumptionCapital Equipment CGU
A&D CGU(iii)
Atrenne CGU(iii)
PCI CGU
Annual revenue growth rate
2023 — 12% over 5 year period;
2022 — 9% over 5 year period;
2021 — 10% over 5 year period
2023 — 9% over 5 year period;
2022 — 12% over 5 year period; 2021 — 11% over 5 year period
2023 — N/A(iii);
2022 — N/A(iii);
2021 — 19% over 5 year period
2023 — 11% over 5 year period;
2022 — 11% over 5 year period;
2021 — 9% over 5 year period
Average annual CGU margins over the 5-year period
2023 — above total company margin(i);
2022 — above total company margin(i);
2021 — above total company margin(i)
2023 — similar to total company margin(i);
2022 — slightly above total company margin(i);
2021 — slightly above total company margin(i)
2023 — N/A (iii);
2022 — N/A (iii);
2021 — above total company margin(i)
2023 — above total company margin(i);
2022 — above total company margin(i);
2021 — above total company margin(i)
Discount rate (ii)
2023 — 14%;
2022 — 14%;
2021 — 11%
2023 — 12%;
2022 — 12%;
2021 — 11%
2023 — N/A (iii);
2022 — N/A (iii);
2021 — 10%
2023 — 15%;
2022 — 15%;
2021 — 15%
(i) Total company margin is defined as total segment income as a percentage of total revenue. See note 25.
(ii) For 2023, the pre-tax discount rate by CGU is as follows: Capital Equipment CGU 18%; A&D CGU 15%; and PCI CGU 17%.
(iii)    Commencing in 2022, our Atrenne CGU merged into our A&D CGU, and is no longer a separate CGU. As a result, our 2022 and 2023 Annual Impairment Assessments for our A&D CGU include our Atrenne business.