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Employee Benefits, Defined Contribution Plans (Details) (Defined Contribution Plan, USD $) | 6 Months Ended
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Jun. 30, 2012 productionfacilities
Hourly Bargaining Unit Employees |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |
Number of production facilities | 7
Hourly Bargaining Unit Employees | Fixed Rate Contributions |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |
Number of production facilities | 3
Hourly Bargaining Unit Employees | Concurrent Match |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |
Number of production facilities | 1
Hourly Bargaining Unit Employees | Fixed Rate and Concurrent Match |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |
Number of production facilities | 2
Hourly Bargaining Unit Employees | No Contributions Required |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |
Number of production facilities | 1
Salaried And Certain Hourly Employee Member | Concurrent Match |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |
Defined contribution plan employer contribution percentage | 4.00%
Hired on or after January 1, 2004 | Hourly Bargaining Unit Employees | Fixed Rate Contributions |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |
Defined contribution plan employer contribution percentage | 2.00%
Hired on or after January 1, 2004 | Salaried And Certain Hourly Employee Member | Fixed Rate Contributions |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |
Defined contribution plan employer contribution percentage | 2.00%
Minimum | Hourly Bargaining Unit Employees |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |
Estimated annual contribution to pension and other postretirement benefit plans | 1,000,000
Minimum | Hourly Bargaining Unit Employees | Fixed Rate Contributions |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |
Defined contribution plan annual employer contribution | 800
Minimum | Salaried And Certain Hourly Employee Member |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |
Estimated annual contribution to pension and other postretirement benefit plans | 5,000,000
Minimum | Hired prior to January 1, 2004 | Hourly Bargaining Unit Employees | Fixed Rate Contributions |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |
Defined contribution plan employer contribution percentage | 2.00%
Minimum | Hired prior to January 1, 2004 | Salaried And Certain Hourly Employee Member | Fixed Rate Contributions |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |
Defined contribution plan employer contribution percentage | 2.00%
Maximum | Hourly Bargaining Unit Employees |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |
Estimated annual contribution to pension and other postretirement benefit plans | 3,000,000
Maximum | Hourly Bargaining Unit Employees | Fixed Rate Contributions |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |
Defined contribution plan annual employer contribution | 2,400
Maximum | Salaried And Certain Hourly Employee Member |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |
Estimated annual contribution to pension and other postretirement benefit plans | 7,000,000
Maximum | Hired prior to January 1, 2004 | Hourly Bargaining Unit Employees | Fixed Rate Contributions |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |
Defined contribution plan employer contribution percentage | 10.00%
Maximum | Hired prior to January 1, 2004 | Salaried And Certain Hourly Employee Member | Fixed Rate Contributions |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |
Defined contribution plan employer contribution percentage | 10.00%

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- Definition Defined Contribution Plan Employer Contribution Percentage + References No definition available. + Details
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- Definition Estimated annual contribution to pension and other postretirement benefit plans. + References No definition available. + Details
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- Definition Number of Production Facilities. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Details
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- Definition The amount of cash or cash equivalents contributed during the reporting period by the entity to fund its pension plans and its non-pension postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3536-108585 + Details
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