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Schedule II Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Income Tax Valuation Allowance |  |  |  |
Reconciliation of beginning and ending balances of valuation and qualifying accounts |  |  |  |
Balance Beginning of Period |  | $ 22.1 | $ 20.5 | $ 18.4
Additions Charged to Costs and Expenses |  | 1.1 | 1.3 | 2.1
Additions Charged to Other Accounts |  | 0.9 | 0.3 | 0.0
Deductions |  | 0.0 | 0.0 | 0.0
Balance End of Period |  | 24.1 | 22.1 | 20.5
Other Allowances |  |  |  |
Reconciliation of beginning and ending balances of valuation and qualifying accounts |  |  |  |
Balance Beginning of Period | [1] | 10.3 | 10.6 | 12.1
Additions Charged to Costs and Expenses | [1] | 0.6 | 5.0 | 0.7
Additions Charged to Other Accounts | [1] | 0.0 | 0.0 | 0.0
Deductions | [1] | 7.3 | 5.3 | 2.2
Balance End of Period | [1] | $ 3.6 | $ 10.3 | $ 10.6
[1] | Other Allowances represented reserves on notes received in connection with transfers of our interests in certain Affiliates, as well as other receivable amounts, which we considered uncollectible. Deductions represent the reversal of such reserves upon collection of the amounts due.

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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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- Definition Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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