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Goodwill and Intangible Assets - Goodwill (Details) - USD ($) | 9 Months Ended |
--- | --- | ---
Sep. 30, 2016 | Aug. 29, 2016
Goodwill [Roll Forward] |  |  |
Balance at December 31, 2015 |  | $ 692,100,000 |
Acquisition | [1] | 148,100,000 |
Balance at September 30, 2016 |  | 544,000,000 |
Goodwill |  | 544,000,000 |
Packaging |  |  |
Goodwill [Roll Forward] |  |  |
Balance at December 31, 2015 |  | 636,900,000 |
Balance at September 30, 2016 |  | 488,800,000 |
Goodwill |  | 488,800,000 |
Paper |  |  |
Goodwill [Roll Forward] |  |  |
Balance at December 31, 2015 |  | 55,200,000 |
Balance at September 30, 2016 |  | 55,200,000 |
Goodwill |  | $ 55,200,000 |
TimBar Corporation |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill |  |  | $ 148,100
TimBar Corporation | Packaging |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill |  |  | $ 148,100,000
[1] | In connection with the August 2016 acquisition of TimBar Corporation (TimBar), the Company recorded $148.1 million of goodwill in the Packaging segment.

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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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Period Type: | instant

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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + 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 (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Details
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Namespace Prefix: |
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- Details
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- Details
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Balance Type: |
Period Type: |