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Basis of Presentation and Summary of Significant Accounting Policies (Supplemental Cash Flow Information) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Supplemental Cash Flow Information |  |  |
Interest paid, net of amounts capitalized | $ 60.5 | $ 57.8 | $ 65.9
Income taxes paid | 12.5 | 6.5 | 34.0
Non-cash capital lease additions (see Note 12) | 2.4 | 0.5 | 21.0
Acquisitions of businesses (see Note 3): |  |  |
Fair value of assets acquired, net of cash | 124.9 | 0.0 | 0.0
Liabilities assumed | (89.8) | 0.0 | 0.0
Goodwill | 54.6 | 0.0 | 0.0
Noncontrolling interests | (18.3) | 0.0 | 0.0
Acquisition of businesses—net of cash acquired | $ 71.4 | $ 0.0 | $ 0.0

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- Definition The increase during the period in capital lease obligations due to entering into new capital leases. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586 + Details
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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586 + Details
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