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Significant Accounting Policies Reclassifications (Policies) | 12 Months Ended
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Dec. 31, 2017
Accounting Policies [Abstract] |
Reclassifications | Reclassifications Certain reclassifications and immaterial revisions have been made to the prior period financial statements to conform to the current-year presentation. We plan to adopt a new presentation for our Consolidated Statements of Operations beginning the first quarter of 2018 which will separately present Cost of services; Selling, general and administrative expenses; and Depreciation and amortization within our Operating expenses. For the years ended December 31, 2017 and 2016, our Selling, general and administrative expenses were $118.6 and $138.8, respectively, which are primarily the expenses of our “Corporate and other” group, as disclosed further in Note 12, excluding depreciation and amortization. For the years ended December 31, 2017 and 2016, Depreciation and amortization were $157.1 and $160.2, respectively, which is also presented on the Consolidated Statements of Cash Flows. This change in presentation of expenses does not impact total operating expenses or operating income.

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- Definition Disclosure of accounting policy for reclassifications that affects the comparability of the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6359566&loc=d3e326-107755 + Details
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