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Schedule II-Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2017
Valuation and Qualifying Accounts [Abstract] |
Schedule II-Valuation and Qualifying Accounts | Schedule II—Valuation and Qualifying Accounts Years ended December 31, 2017, 2016, and 2015 (Amounts in millions)
Description | Balance at Beginning of Year |  | "Additions" Charged to Costs and Expenses |  | "Other" Additions (Deductions) |  | "Less" Deductions |  | Balance at End of Year
Year ended December 31, 2017 |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 11.2 |  |  | 8.2 |  |  | — |  |  | 7.5 |  |  | 11.9 |
Insurance reserves | $ | 34.6 |  |  | 68.2 |  | (1) | — |  |  | 63.8 |  | (2) | 39.0 |
Year ended December 31, 2016 |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 11.7 |  |  | 8.5 |  |  | — |  |  | 9.0 |  |  | 11.2 |
Insurance reserves | $ | 31.8 |  |  | 62.3 |  | (1) | — |  |  | 59.5 |  | (2) | 34.6 |
Year ended December 31, 2015 |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 12.6 |  |  | 8.8 |  |  | — |  |  | 9.7 |  |  | 11.7 |
Insurance reserves | $ | 31.1 |  |  | 54.3 |  | (1) | — |  |  | 53.6 |  | (2) | 31.8 |
(1) Includes costs and expenses incurred for premiums and claims related to health and general insurance. (2) Includes costs and expenses paid for premiums and claims related to health and general insurance. See accompanying Report of Independent Registered Public Accounting Firm incorporated herein by reference.

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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 -URI http://asc.fasb.org/topic&trid=2122369 + Details
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- References No definition available. + Details
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