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COMMITMENTS AND CONTINGENCIES - Tax Matters - Sales and use tax (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2021
Contingencies |  |  |
Net benefit recorded from sales and use tax audit |  | $ 12.4 |
Sales and use tax refund | $ 17.3 |  |
Accrued liability related to sales and use tax audit settlement |  |  | $ 2.0
Cost of sales excluding depreciation and amortization |  |  |
Contingencies |  |  |
Net benefit recorded from sales and use tax audit |  | 4.4 |
SG&A |  |  |
Contingencies |  |  |
Net benefit recorded from sales and use tax audit |  | $ 7.9 |

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