SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Rollforward of Allowance for Doubtful Accounts (Details) - USD ($) $ in Millions |
3 Months Ended | |||
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Mar. 31, 2020 |
Mar. 31, 2019 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Accounts Receivable, Allowance for Credit Loss [Roll Forward] | ||||
| Allowance for doubtful accounts, beginning of period | $ 13.4 | $ 12.5 | $ 11.2 | $ 10.9 |
| Current period bad debt expense | 2.5 | 2.0 | ||
| Write-offs, net of recoveries | $ (0.3) | $ (0.4) | ||
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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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