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SCHEDULE II – VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Movement in Valuation Allowances and Reserves |  |  |
Deferred tax asset valuation allowances | $ 21.6 | $ 33.9 |
Cryobiological products business |  |  |
Movement in Valuation Allowances and Reserves |  |  |
Deferred tax asset valuation allowances |  | 32.4 |
Allowance for doubtful accounts |  |  |
Movement in Valuation Allowances and Reserves |  |  |
Balance at beginning of period | 8.4 | 8.5 | $ 8.1
Additions - Charged to costs and expenses | 1.2 | 0.4 | 0.2
Charged to other accounts | 0.0 | 0.0 | 0.0
Deductions | (1.1) | 0.0 | 0.0
Translations | (2.5) | (0.5) | 0.2
Balance at end of period | 6.0 | 8.4 | 8.5
Allowance for excess and obsolete inventory |  |  |
Movement in Valuation Allowances and Reserves |  |  |
Balance at beginning of period | 9.7 | 10.6 | 8.9
Additions - Charged to costs and expenses | 11.4 | 0.4 | 10.0
Charged to other accounts | 0.0 | 0.0 | 0.0
Deductions | (9.8) | (0.5) | (8.0)
Translations | (0.4) | (0.8) | (0.3)
Balance at end of period | 10.9 | 9.7 | 10.6
Deferred tax assets valuation allowance |  |  |
Movement in Valuation Allowances and Reserves |  |  |
Balance at beginning of period | 33.9 | 68.2 | 65.2
Additions - Charged to costs and expenses | 0.3 | 0.3 | 5.4
Charged to other accounts | 0.0 | 0.0 | 5.3
Deductions | (12.7) | (36.6) | (5.9)
Translations | 0.1 | 2.0 | (1.8)
Balance at end of period | $ 21.6 | $ 33.9 | $ 68.2

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