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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS | 12 Months Ended
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Dec. 31, 2014
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS |
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS | SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS (in millions)
Description |  | Balance at Beginning of Period |  | Additions Charged to Costs and Expenses |  | Deductions |  | Amounts Charged to Other Accounts |  | Balance at End of Period |
Year Ended December 31, 2012 Allowance for doubtful accounts |  | $ | 22.2 |  | $ | 6.7 |  | $ | 8.5 | (1) | $ | 0.1 |  | $ | 20.5 |
Year Ended December 31, 2013 Allowance for doubtful accounts |  | $ | 20.5 |  | $ | 4.0 |  | $ | 10.4 | (1) | $ | 4.8 |  | $ | 18.9 |
Year Ended December 31, 2014 Allowance for doubtful accounts |  | $ | 18.9 |  | $ | 4.6 |  | $ | 5.2 | (1) | $ | — |  | $ | 18.3 |
(1) | Uncollectible accounts written off.

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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