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Acquisitions Business Acquisition, Pro Forma Revenue (Details) - ECS $ / shares in Units, shares in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2019 USD ($) $ / shares shares
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items] |
Revenues | $ 3,548.9
Income from continuing operations | 169.6
Net income | $ 169.3
Basic | $ / shares | $ 3.24
Diluted | $ / shares | $ 3.19
Basic Shares | shares | 52.4
Diluted Shares | shares | 53.2

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- Definition Amount after tax of pro forma income from continuing operations as if the business combination had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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