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Expected Credit Losses (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Trade Receivables |  |
Expected credit losses, trade receivables, beginning balance | $ 1.2 | $ 1.0
Provision for expected credit losses | 0.3 | 1.2
Recoveries collected / reversals of provision | (0.7) | (1.0)
Write-off charged against allowance | 0.0 |
Expected credit losses, trade receivables, ending balance | 0.8 | 1.2
Other Current Assets |  |
Expected credit losses, other current assets, beginning balance | 1.9 | 1.9
Provision for expected credit losses | 0.0 | 0.0
Recoveries collected / reversals of provision | 0.0 | 0.0
Write-off charged against allowance | (1.9) |
Expected credit losses, other current assets, ending balance | 0.0 | 1.9
Total |  |
Expected credit losses, total, beginning balance | 3.1 | 2.9
Provision for expected credit losses | 0.3 | 1.2
Recoveries collected / reversals of provision | (0.7) | (1.0)
Write-off charged against allowance | (1.9) |
Expected credit losses, total, ending balance | $ 0.8 | $ 3.1

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