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Commitments, Contingencies, and Guarantees (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2011
Commitments And Contingencies [Line Items]          
Equity method investments $ 4,867   $ 4,867   $ 4,723
Asbestos litigation expense 5 5 6 10  
Contingencies 75   75   72
Product warranty liability accrual 22   22   23
Number of hazardous waste sites 18   18    
Pittsburgh Corning Europe (PCE) [Member]
         
Commitments And Contingencies [Line Items]          
Equity method investments 136   136   138
Dow Corning Corporation [Member]
         
Commitments And Contingencies [Line Items]          
Percent ownership in PCC 50.00% [1]   50.00% [1]    
Equity method investments 1,256   1,256   1,160
Environmental Cleanup And Related Litigation [Member]
         
Commitments And Contingencies [Line Items]          
Accrual for contingent loss 24   24   25
Asbestos Litigation [Member]
         
Commitments And Contingencies [Line Items]          
Number of pending cases for current non-PCC claims 9,900   9,900    
Estimated product liability 663   663   657
Contingent Guarantees [Member]
         
Commitments And Contingencies [Line Items]          
Notional value of contingent guarantees 140   140   170
Corning Inc. [Member] | PPG Industries, Inc. [Member]
         
Commitments And Contingencies [Line Items]          
Percent ownership in PCC 50.00%   50.00%    
Corning Inc. [Member] | Dow Corning Corporation [Member]
         
Commitments And Contingencies [Line Items]          
Percent ownership in PCC 50.00%   50.00%    
Corning Inc. [Member] | Asbestos Litigation [Member]
         
Commitments And Contingencies [Line Items]          
Additional accrual for non-PCC asbestos claims $ 150   $ 150    
[1] Amounts reflect Corning's direct ownership interests in the respective affiliated companies. Corning does not control any of these entities