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Acquisitions Schedule of Purchase Price Allocation (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2019 | Apr. 02, 2018
Business Acquisition [Line Items] |  |  |  |
Goodwill | $ 1,421.1 |  | $ 1,486.9 |
ECS |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Revenues | 3,548.9 | $ 3,213.5 |  |
Cash |  |  |  | $ 12.4
Accounts receivable |  |  |  | 97.2
Prepaid expenses and other current assets |  |  |  | 8.6
Property and equipment |  |  |  | 29.0
Identifiable intangible assets |  |  |  | 195.0
Goodwill |  |  |  | 528.2
Other non-current assets |  |  |  | 1.2
Total assets acquired |  |  |  | 871.6
Current liabilities |  |  |  | 94.7
Long-term liabilities |  |  |  | 4.3
Total liabilities assumed |  |  |  | 99.0
Total purchase price |  |  |  | $ 772.6
Income from continuing operations | 169.6 | 134.8 |  |
Net income | $ 169.3 | $ 134.6 |  |
Basic | $ 3.24 | $ 2.57 |  |
Diluted | $ 3.19 | $ 2.53 |  |
Basic Shares | 52.4 | 52.5 |  |
Diluted Shares | 53.2 | 53.2 |  |

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