SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Rollforward of Allowance for Doubtful Accounts (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||||||
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Sep. 30, 2020 |
Sep. 30, 2019 |
Sep. 30, 2020 |
Sep. 30, 2019 |
Jun. 30, 2020 |
Dec. 31, 2019 |
Jun. 30, 2019 |
Dec. 31, 2018 |
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| Accounts Receivable, Allowance for Credit Loss [Roll Forward] | ||||||||
| Allowance for doubtful accounts, beginning of period | $ 15.8 | $ 12.5 | $ 15.8 | $ 12.5 | $ 16.9 | $ 11.2 | $ 13.3 | $ 10.9 |
| Current period bad debt expense | 0.2 | 0.9 | 7.1 | 4.6 | ||||
| Write-offs, net of recoveries | $ (1.3) | $ (1.7) | $ (2.5) | $ (3.0) | ||||
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- Definition Amount of allowance for credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of direct write-downs of accounts receivable charged against the allowance. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of expense (reversal of expense) for expected credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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