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Commitments and Contingencies (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended 3 Months Ended
Dec. 31, 2012
Fox River Site [Member]
entity
facility
Dec. 31, 2012
Fox River Site [Member]
defendant
Dec. 31, 2011
Fox River Site [Member]
Dec. 31, 2010
Fox River Site [Member]
Jun. 30, 2009
Fox River Site [Member]
Dec. 31, 2012
Total Clean Up Costs, Fox River Site [Member]
Dec. 31, 2012
Total Natrual Resource Damages, Fox River Site [Member]
Dec. 31, 2010
Fox River LLC [Member]
entity
Dec. 31, 2012
Fox River LLC [Member]
Dec. 31, 2011
Fox River LLC [Member]
Dec. 31, 2012
Kalamazoo River Site [Member]
Dec. 31, 2012
Minimum [Member]
Total Natrual Resource Damages, Fox River Site [Member]
Dec. 31, 2012
Maximum [Member]
Total Natrual Resource Damages, Fox River Site [Member]
Dec. 31, 2012
Threatened Litigation [Member]
Dec. 31, 2012
API [Member]
Threatened Litigation [Member]
Dec. 31, 2012
Appleton [Member]
Fox River Site [Member]
Loss Contingencies [Line Items]                                
Number of Potentially Responsible Parties 8 8           4                
Number of Sites Previously Owned Allegedly Responsible for PCB Discharges 2 2                            
Additional Potentially Responsible Parties 4 4                            
Promissory Note, Original Maximum Obligation         $ 20                      
Promissory Note, Current Maximum Obligation 15 15                            
Portion Of Costs Below Threshold, Percentage 45.00% 45.00%                            
Threshold For Environmental Cleanup Costs 75 75                            
Portion Of Costs Exceeding Threshold, Percentage 40.00% 40.00%                            
Accounts Receivable, Related Parties                             40  
Percentage of Arbitration Award                           60.00%    
Number of Defendants                     3          
Estimated Total Clean Up Costs 827 827                            
Percentage Contingency for Probable Cost Overruns           5.00%                    
Fox River LLC Funding Remainder Other Current Asset                 3 1            
Estimated Total NRD Costs             76                  
Estimated Minimum NRD Costs                       0 246      
Estimated Federal Government Maximum NRD Costs             382                  
Anticipated Allocable Total Site Costs, Maximum 100.00% 100.00%                            
Net Loss Contingency Accrual                 115 160            
Estimate of AT&T and Actel-Lucent's Portion of Payout, Recorded As Long Term Asset     84 79                        
Total Amount Received from Settlements with Insurance Carriers 162 162                            
Portion of Insurance Settlements Subject to Competing Claims 9 9                            
NCRs Agreed Upon Share of Insurance Settlements Subject to Competing Claims 4 4                            
Judgement Against Insurance Company, Amount Awarded, Pending Appeal                               40.8
Alleged Portion Of GP Clean Up Costs                     $ 79          
Number of Defendants With Asserted Cross Claims                     2