XML 62 R31.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Summary of Significant Accounting Policies (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2014
Accounting Policies [Abstract] |
Components of Inventories | The components of inventories were as follows (dollars in millions):
| December 31
| 2014 |  | 2013
Raw materials | $ | 261.9 |  |  | $ | 212.0 |
Work in process | 11.3 |  |  | 13.9 |
Finished goods | 216.3 |  |  | 210.0 |
Supplies and materials | 175.4 |  |  | 158.4 |
Inventories | $ | 664.9 |  |  | $ | 594.3 |
Property, Plant and Equipment (at cost) | Property, plant, and equipment consisted of the following (dollars in millions):
| December 31
| 2014 |  | 2013
Land and land improvements | $ | 138.2 |  |  | $ | 140.6 |
Buildings | 659.9 |  |  | 628.9 |
Machinery and equipment | 4,508.0 |  |  | 4,246.3 |
Construction in progress | 154.8 |  |  | 168.8 |
Other | 54.5 |  |  | 48.1 |
Property, plant, and equipment, at cost | 5,515.4 |  |  | 5,232.7 |
Less accumulated depreciation | (2,657.8 | ) |  | (2,427.0 | )
Property, plant, and equipment, net | $ | 2,857.6 |  |  | $ | 2,805.7 |
Property, Plant and Equipment Estimated Useful Lives | Depreciation is computed on the straight-line basis over the estimated useful lives of the related assets. Assets under capital leases are depreciated on the straight-line method over the term of the lease or the useful life, if shorter. The following lives are used for the various categories of assets:
Buildings and land improvements | 5 to 40 years
Machinery and equipment | 3 to 25 years
Trucks and automobiles | 3 to 10 years
Furniture and fixtures | 3 to 20 years
Computers and hardware | 3 to 10 years
| Period of the lease or
Leasehold improvements | useful life, if shorter

X
- Definition Property, Plant and Equipment Estimated Useful Lives [Table Text Block] + References No definition available. + Details
Name: | pkg_PropertyPlantandEquipmentEstimatedUsefulLivesTableTextBlock
Namespace Prefix: | pkg_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph b -Article 5 + Details
Name: | us-gaap_PropertyPlantAndEquipmentTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 2 -Paragraph 6 -Subparagraph a,b,c -Article 5 + Details
Name: | us-gaap_ScheduleOfInventoryCurrentTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration