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v3.22.4

Income taxes - Significant Portions of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | --- | ---
Deferred tax assets |  |  |  |
Tax loss carryforwards | $ 825.5 | $ 840.4 |  |
Postretirement benefits | 149.6 | 211.8 |  |
Foreign tax credit carryforwards | 109.2 | 145.9 |  |
Other tax credit carryforwards | 32.7 | 31.9 |  |
Deferred revenue | 28.2 | 35.8 |  |
Employee benefits and compensation | 21.2 | 25.8 |  |
Purchased capitalized software | 16.9 | 24.2 |  |
Depreciation | 32.6 | 31.6 |  |
Warranty, bad debts and other reserves | 7.1 | 7.5 |  |
Capitalized costs | 6.2 | 3.9 |  |
Other | 49.9 | 46.1 |  |
Total deferred tax assets, gross | 1,279.1 | 1,404.9 |  |
Valuation allowance | (1,110.5) | (1,226.2) | $ (1,271.5) | $ (1,524.7)
Total deferred tax assets | 168.6 | 178.7 |  |
Deferred tax liabilities |  |  |  |
Capitalized research and development | 31.0 | 43.1 |  |
Other | 29.2 | 29.5 |  |
Total deferred tax liabilities | 60.2 | 72.6 |  |
Net deferred tax assets | $ 108.4 | $ 106.1 |  |

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