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Segment and Geographic Information - Reconciliation to IFRS Earnings Before Income Taxes (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of operating segments [line items] |  |  |
Segment income | $ 383.2 | $ 263.3 | $ 167.7
Reconciling items: |  |  |
Employee SBC expense (note 12) | 55.6 | 51.0 | 33.4
Fair value gain/(loss) |  | 5.2 |
Amortization of intangible assets (excluding computer software) | 39.6 | 40.1 | 25.5
Other charges, net of recoveries (note 15) | 15.2 | 6.7 | 10.3
Earnings before income taxes | 306.6 | 203.6 | 136.0
TRS |  |  |
Reconciling items: |  |  |
Fair value gain/(loss) | $ 45.6 | $ 0.0 | $ 0.0
Advanced Technology Solutions |  |  |
Disclosure of operating segments [line items] |  |  |
Segment margin (as a percentage) | 4.70% | 4.70% | 4.50%
Connectivity & Cloud Solutions |  |  |
Disclosure of operating segments [line items] |  |  |
Segment margin (as a percentage) | 6.20% | 5.10% | 3.90%
Operating segments |  |  |
Disclosure of operating segments [line items] |  |  |
Segment income | $ 445.2 | $ 358.0 | $ 233.9
Operating segments | Advanced Technology Solutions |  |  |
Disclosure of operating segments [line items] |  |  |
Segment income | 156.1 | 140.9 | 105.0
Operating segments | Connectivity & Cloud Solutions |  |  |
Disclosure of operating segments [line items] |  |  |
Segment income | 289.1 | 217.1 | 128.9
Reconciling items |  |  |
Reconciling items: |  |  |
Finance costs | 76.6 | 59.7 | 31.7
Employee SBC expense (note 12) | 55.6 | 51.0 | 33.4
Other charges, net of recoveries (note 15) | 15.2 | 6.7 | 10.3
Reconciling items | TRS |  |  |
Reconciling items: |  |  |
Fair value gain/(loss) | (45.6) | 0.0 | 0.0
Reconciling items | Intangible assets, excluding computer software |  |  |
Reconciling items: |  |  |
Amortization of intangible assets (excluding computer software) | $ 36.8 | $ 37.0 | $ 22.5

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