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Commitments and Contingencies (Details) (USD $)
 12 Months Ended 12 Months Ended
Dec. 31, 2009
Dec. 31, 2010
Commission Arrangement Lawsuit [Member]
Dec. 31, 2011
Fox River Site [Member]
facility
Dec. 31, 2010
Fox River Site [Member]
Jun. 30, 2009
Fox River Site [Member]
Dec. 31, 2011
Total Clean Up Costs, Fox River Site [Member]
Dec. 31, 2011
Total Natrual Resource Damages, Fox River Site [Member]
Dec. 31, 2011
Total Natrual Resource Damages, Fox River Site [Member]
Minimum [Member]
Dec. 31, 2011
Total Natrual Resource Damages, Fox River Site [Member]
Maximum [Member]
Dec. 31, 2011
Fox River LLC [Member]
Dec. 31, 2010
Fox River LLC [Member]
Dec. 31, 2011
Kalamazoo River Site [Member]
Loss Contingencies [Line Items]                        
Loss Contingency Accrual, at Carrying Value   $ 8,000,000                    
Fox River LLC Funding Remainder Other Current Asset                   1,000,000 5,000,000  
Promissory Note, Original Maximum Obligation         20,000,000              
Promissory Note, Current Maximum Obligation     16,000,000                  
Portion Of Costs Below Threshold, Percentage     45.00%                  
Threshold For Environmental Cleanup Costs     75,000,000                  
Portion Of Costs Exceeding Threshold, Percentage     40.00%                  
Number of Defendants                       3
Consent Decrees Filed By Government 12                      
Estimated Total Clean Up Costs     852,000,000                  
Percentage Contingency for Probable Cost Overruns           15.00%            
Estimated Total Clean Up Costs With Additional Overrun Contingency           898,000,000            
Estimated Total NRD Costs             76,000,000          
Estimated Minimum NRD Costs               0 246,000,000      
Estimated Federal Government Maximum NRD Costs             382,000,000          
Loss Contingency, Potential Reserve Increase Amount     25,000,000                  
Anticipated Allocable Total Site Costs, Maximum     100.00%                  
Net Loss Contingency Accrual                   160,000,000 199,000,000  
Estimate of AT&T and Actel-Lucent's Portion of Payout, Recorded As Long Term Asset     79,000,000 86,000,000                
Total Amount Received from Settlements with Insurance Carriers     158,000,000                  
Amounts Expected to be Received from Settlements with Insurance Carriers     4,000,000                  
Portion of Insurance Settlements Subject to Competing Claims     9,000,000                  
NCRs Agreed Upon Share of Insurance Settlements Subject to Competing Claims     4,000,000                  
Judgement Against Insurance Company, Amount Awarded, Pending Appeal     5,000,000                  
Alleged Portion Of GP Clean Up Costs                       79,000,000
Number of Potentially Responsible Parties     8                  
Number of Sites Previously Owned Allegedly Responsible for PCB Discharges     2                  
Additional Potentially Responsible Parties     4                  
Loss Contingency, Range of Possible Loss, Minimum     $ 0                  
Number of Insurance Companies Not Settled     1                  
Number of Defendants With Asserted Cross Claims                       2