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OTHER FINANCIAL INFORMATION - Allowances (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Sales Returns and Allowances and Allowance for Doubtful Accounts [Abstract] |  |  |
Beginning balance | $ 36.0 | $ 28.3 | $ 18.0
Provision charged to expense | 59.6 | 55.3 | 55.3
Deductions | (43.6) | (47.6) | (45.0)
Ending balance | 52.0 | 36.0 | 28.3
Change in Inventory Obsolescence [Abstract] |  |  |
Beginning balance | 30.6 | 15.3 | 1.2
Provision charged to expense | 21.3 | 20.9 | 14.4
Write-offs and other | 7.8 | (5.6) | (0.3)
Ending balance | 59.7 | 30.6 | 15.3
Change in the income tax valuation allowance |  |  |
Beginning balance | 208.0 | 108.5 | 89.0
Additions (reductions) charged to expense | 17.0 | 105.1 | 1.9
Additions (reductions) charged to other accounts | (19.3) | (5.6) | 17.6
Ending balance | $ 205.7 | $ 208.0 | $ 108.5

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- References No definition available. + Details
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- Definition Na. + References No definition available. + Details
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- Definition Deferred Tax Assets, Valuation Allowance, charged to expense + References No definition available. + Details
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- Definition Deferred Tax Assets, Valuation Allowance, Charged to other accounts. + References No definition available. + Details
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- Definition Inventory Obsolescence, Provision. + References No definition available. + Details
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- Definition Inventory Obsolescence, Provision Charged to Expense. + References No definition available. + Details
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- Definition Inventory Obsolescence, Write-offs and Other. + References No definition available. + Details
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- Definition The amount of sales returns and allowances and allowance for doubtful accounts. + References No definition available. + Details
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- Definition Na. + References No definition available. + Details
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- Definition Sales Returns and Allowances and Allowance for Doubtful Accounts, Charged to Expense + References No definition available. + Details
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- Definition Sales Returns and Allowances and Allowance for Doubtful Accounts, Deductions. + References No definition available. + Details
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