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Goodwill and Intangible Assets - Changes in Carrying Amount of Goodwill (Details) - USD ($) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Nov. 30, 2016 | Aug. 29, 2016 | Dec. 31, 2013
Goodwill [Line Items] |  |  |  |  |  |
Goodwill |  | $ 544,000,000 | $ 544,000,000 |  |  | $ 546,800,000
Goodwill [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | 544,000,000 |  |  |  |
Sale of Hexacomb Europe and Mexico | [1] |  | 2,800,000 |  |  |
Acquisitions | [1] | 193,900,000 |  |  |  |
Ending Balance |  | 737,900,000 | 544,000,000 |  |  |
Packaging |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Goodwill |  | 488,800,000 | 488,800,000 |  |  | 491,600,000
Goodwill [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | 488,800,000 |  |  |  |
Sale of Hexacomb Europe and Mexico | [1] |  | 2,800,000 |  |  |
Acquisitions | [1] | 193,900,000 |  |  |  |
Ending Balance |  | 682,700,000 | 488,800,000 |  |  |
Paper |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Goodwill |  | 55,200,000 | 55,200,000 |  |  | $ 55,200,000
Goodwill [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | 55,200,000 |  |  |  |
Sale of Hexacomb Europe and Mexico | [1] |  | 0 |  |  |
Acquisitions | [1] | 0 |  |  |  |
Ending Balance |  | 55,200,000 | 55,200,000 |  |  |
TimBar Corporation |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Goodwill |  | 157,300 |  |  | $ 148,100 |
Goodwill [Roll Forward] |  |  |  |  |  |
Ending Balance |  | 157,300 |  |  |  |
TimBar Corporation | Packaging |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |
Acquisitions | [1] | 157,300,000 |  |  |  |
Columbus Container Inc |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Goodwill |  |  |  | $ 36,600,000 |  |
Columbus Container Inc | Packaging |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |
Acquisitions | [1] | 36,600,000 |  |  |  |
Hexacomb Europe and Mexico | Packaging |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |
Sale of Hexacomb Europe and Mexico |  |  | $ 2,800,000 |  |  |
Proceeds from sale of business |  | $ 23,000,000 |  |  |  |
[1] | During 2015, we sold the assets of Hexacomb Europe and Mexico, a corrugated products manufacturer, for $23.0 million and reduced goodwill in our Packaging segment by $2.8 million.

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975 + Details
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