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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2023
Income Taxes [Abstract] |
Disclosure of Major Components of Tax Expense |
| Year ended December 31
| 2021 |  | 2022 |  | 2023
Current income tax expense: |  |  |  |  |
Current year (i) | $ | 44.3 |  |  | $ | 99.1 |  |  | $ | 66.4 |
Adjustments for prior years, including changes to net provisions related to tax uncertainties (ii) | (3.4) |  |  | (10.4) |  |  | (2.5) |
| 40.9 |  |  | 88.7 |  |  | 63.9 |
Deferred income tax expense (recovery): |  |  |  |  |
Origination and reversal of temporary differences (i) (iii) | 1.3 |  |  | (22.3) |  |  | (1.3) |
Changes in previously unrecognized tax losses and deductible temporary differences, including adjustments for prior years | (10.1) |  |  | (8.3) |  |  | (0.6) |
| (8.8) |  |  | (30.6) |  |  | (1.9) |
Income tax expense | $ | 32.1 |  |  | $ | 58.1 |  |  | $ | 62.0 |
Disclosure of Reconciliation of Income Taxes Calculated at the Statutory Income Tax Rate to the Effective Tax Rate | A reconciliation of income taxes calculated at the statutory income tax rate to the income tax expense at the effective tax rate is as follows:
| Year ended December 31
| 2021 |  | 2022 |  | 2023
Earnings before income taxes | $ | 136.0 |  |  | $ | 203.6 |  |  | $ | 306.6 |
Income tax expense at Celestica’s statutory income tax rate of 26.5% (2021 to 2023) | $ | 36.1 |  |  | $ | 54.0 |  |  | $ | 81.3 |
Impact on income taxes from: |  |  |  |  |
Foreign income taxed at different rates | (16.9) |  |  | (34.1) |  |  | (51.4) |
Foreign exchange | 1.2 |  |  | 5.7 |  |  | 4.0 |
Other, including non-taxable/non-deductible items and changes to net provisions related to tax uncertainties (i) (ii) | 8.2 |  |  | 2.9 |  |  | 19.1 |
Change in tax rates (iii) | (7.6) |  |  | 0.1 |  |  | — |
Change in unrecognized tax losses and deductible temporary differences | 11.1 |  |  | 29.5 |  |  | 9.0 |
Income tax expense | $ | 32.1 |  |  | $ | 58.1 |  |  | $ | 62.0 |
(i) These line items in the two tables above include: (i) for 2023, a $11.3 tax expense arising from both the repatriation of undistributed earnings and taxable temporary differences associated with the anticipated repatriation of undistributed earnings from certain of our Asian subsidiaries; (ii) for 2022, a $3.3 tax expense related to taxable temporary differences associated with the then-anticipated repatriation of undistributed earnings (Repatriation Expense) from certain of our Chinese subsidiaries ($3.3 of which was paid in 2023 and realized as a current tax expense in 2023); and (iii) for 2021, a $6.0 Repatriation Expense related to certain of our Chinese subsidiaries ($2.5 of which was paid in 2023 and realized as a current tax expense in 2023 and $2.5 of which was paid in 2022 and realized as current tax expense in 2022). (ii) These line items for 2021, 2022 and 2023 in the two tables above include tax benefits related to return-to-provision adjustments for changes in estimates related to prior years based on changes in facts or circumstances (RTP Adjustments), and net adjustments for tax liabilities and uncertainties (discussed below). (iii) This line item for 2021 in the two tables above relates to a deferred tax recovery recorded in connection with the revaluation of certain temporary differences using the future effective tax rate of our Thailand subsidiary in connection with the then-forthcoming transition from a 100% income tax exemption to a 50% exemption in 2022 under an applicable tax incentive (Revaluation Impact). See the discussion of tax incentives below.
Changes in Deferred Tax Assets and Liabilities | Changes in deferred tax assets and liabilities for the periods indicated are as follows:
| Unrealized foreign exchange gains |  | Accounting provisions not currently deductible |  | Pensions and non-pension post-retirement benefits |  | Tax losses carried forward |  | Property, plant and equipment and intangibles |  | Other |  | Reclassification between deferred tax assets and deferred tax liabilities(i) |  | Total
Deferred tax assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance — January 1, 2022 | $ | — |  |  | $ | 17.7 |  |  | $ | 2.8 |  |  | $ | 69.2 |  |  | $ | — |  |  | $ | 1.2 |  |  | $ | (43.2) |  |  | $ | 47.7 |
Credited (charged) to net earnings | — |  |  | 13.7 |  |  | 2.8 |  |  | (10.7) |  |  | — |  |  | 17.4 |  |  | — |  |  | 23.2 |
Credited directly to equity | — |  |  | — |  |  | 4.4 |  |  | 0.4 |  |  | — |  |  | (5.1) |  |  | — |  |  | (0.3) |
Effects of foreign exchange | — |  |  | (0.5) |  |  | — |  |  | (1.9) |  |  | — |  |  | (0.2) |  |  | — |  |  | (2.6) |
Other | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 0.9 |  |  | 0.9 |
Balance — December 31, 2022 | — |  |  | 30.9 |  |  | 10.0 |  |  | 57.0 |  |  | — |  |  | 13.3 |  |  | (42.3) |  |  | 68.9 |
Credited (charged) to net earnings | — |  |  | (1.4) |  |  | (2.4) |  |  | (8.3) |  |  | — |  |  | 8.1 |  |  | — |  |  | (4.0) |
Credited (charged) directly to equity | — |  |  | — |  |  | (0.1) |  |  | — |  |  | — |  |  | 0.7 |  |  | — |  |  | 0.6 |
Effects of foreign exchange | — |  |  | (0.6) |  |  | (0.1) |  |  | 0.2 |  |  | — |  |  | 1.0 |  |  | — |  |  | 0.5 |
Other | — |  |  | (0.1) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (3.4) |  |  | (3.5) |
Balance — December 31, 2023 | $ | — |  |  | $ | 28.8 |  |  | $ | 7.4 |  |  | $ | 48.9 |  |  | $ | — |  |  | $ | 23.1 |  |  | $ | (45.7) |  |  | $ | 62.5 |
Deferred tax liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance — January 1, 2022 | $ | 27.2 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 76.2 |  |  | $ | — |  |  | $ | (43.2) |  |  | $ | 60.2 |
Charged (credited) to net earnings | (5.0) |  |  | — |  |  | — |  |  | — |  |  | (2.4) |  |  | — |  |  | — |  |  | (7.4) |
Effects of foreign exchange | (1.7) |  |  | — |  |  | — |  |  | — |  |  | (0.7) |  |  | — |  |  | — |  |  | (2.4) |
Other | — |  |  | — |  |  | — |  |  | — |  |  | 0.4 |  |  | — |  |  | 0.9 |  |  | 1.3 |
Balance — December 31, 2022 | 20.5 |  |  | — |  |  | — |  |  | — |  |  | 73.5 |  |  | — |  |  | (42.3) |  |  | 51.7 |
Charged (credited) to net earnings | 2.1 |  |  | — |  |  | — |  |  | — |  |  | (8.0) |  |  | — |  |  | — |  |  | (5.9) |
Effects of foreign exchange | 0.5 |  |  | — |  |  | — |  |  | — |  |  | (0.7) |  |  | — |  |  | — |  |  | (0.2) |
Other | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (3.4) |  |  | (3.4) |
Balance — December 31, 2023 | $ | 23.1 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 64.8 |  |  | $ | — |  |  | $ | (45.7) |  |  | $ | 42.2 |
(i) This reclassification reflects the offsetting of deferred tax assets and deferred tax liabilities to the extent they relate to the same taxing authorities and there is a legally enforceable right to such offset.

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