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VALUATION AND QUALIFYING ACCOUNTS | 12 Months Ended
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Dec. 31, 2018
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
VALUATION AND QUALIFYING ACCOUNTS | VALUATION AND QUALIFYING ACCOUNTS
|  |  | Additions |  |  |  |
| Balance at Beginning of Period |  | Charged to Costs and Expenses |  | Charged to Other Accounts |  | Deductions From Reserves |  | Balance at End of Period
| (in millions)
Year ended December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts (a) | $ | 13.7 |  |  | $ | 2.2 |  |  | $ | 1.0 |  |  | $ | (3.3 | ) |  | $ | 13.6 |
Tax valuation allowance (b) | 41.6 |  |  | 7.1 |  |  | (1.8 | ) |  | (0.2 | ) |  | 46.7 |
Year ended December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts (a) | $ | 12.8 |  |  | $ | 2.9 |  |  | $ | — |  |  | $ | (2.0 | ) |  | $ | 13.7 |
Tax valuation allowance (b) | 47.7 |  |  | (8.9 | ) |  | 2.8 |  |  | — |  |  | 41.6 |
Year ended December 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts (a) | $ | 13.1 |  |  | $ | 1.5 |  |  | $ | — |  |  | $ | (1.8 | ) |  | $ | 12.8 |
Tax valuation allowance (b) | 45.2 |  |  | 1.2 |  |  | 1.3 |  |  | — |  |  | 47.7 |
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(a) | The deductions related to allowances for doubtful accounts represent accounts receivable which are written off.
(b) | The tax valuation allowances are provided for other-than-temporary impairments and unrealized losses related to certain investments that may not be recognized due to the uncertainty of the ready marketability of certain impaired investments, and net operating loss and credit carryforwards that may not be recognized due to insufficient taxable income.

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- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- References No definition available. + Details
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