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Divestitures and Acquisitions - Acquisitions Narrative (Details) - USD ($) $ in Millions |  |  | 3 Months Ended |
--- | --- | --- | --- | ---
May 01, 2019 | Aug. 01, 2018 | Jun. 30, 2019 | Dec. 31, 2018
Business Acquisition [Line Items] |  |  |  |
Goodwill |  |  | $ 1,957.2 | $ 1,947.6
Product Care |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Goodwill |  |  | 1,431.4 | $ 1,427.9
Automated Packaging Systems |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Cash paid to acquire business | $ 510.0 |  |  |
Automated Packaging Systems | APS European Employees |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Cash paid to acquire business | $ 60.0 |  |  |
Other Acquisitions |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Cash paid to acquire business |  |  | 23.4 |
Goodwill |  |  | 6.0 |
AFP, Inc | Product Care |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Goodwill |  | $ 21.6 | $ 22.7 |
Percentage of shares acquired |  | 100.00% |  |
Consideration transferred |  | $ 74.1 |  |
Cash acquired from acquisition |  | $ 3.3 |  |

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