Related Party Transactions Level 4 (Details) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Related Party Transaction [Line Items]        
Non-cash capital contribution from parent $ 0 $ 0 $ 218  
Forgiveness of Note Receivable from Parent 0 24 0  
Non-cash distribution declared to parent 0 208 0  
Aggregate balance of MSC Holdings LLC PIK Facility   247    
Cash on deposit as collateral for related party loan 11      
Apollo [Member]        
Related Party Transaction [Line Items]        
Annual management consulting fee 3      
Annual management consulting fee percentage 2.00%      
Non-cash capital contribution from parent   218    
Proceeds on Huntsman insurance recoveries   10    
Huntsman settlement payment   225    
Fees related to the Huntsman settlement   2    
Reimbursement of expenses incurred to obtain Huntsman insurance recoveries   1    
Apollo share of insurance recoveries   7    
Management Consulting Fees 3 3 3  
Apollo Affiliates and Other Related Parties [Member]        
Related Party Transaction [Line Items]        
Due from Related Parties 26 17    
Due to Related Parties 26 1    
Issued preferred units     28,795,935  
Warrants issued to purchase common units     28,785,935  
Purchase price of preferred units     205  
Initial face amount of the Preferred Equity Issuance     200  
Partial proceeds from the Preferred Equity Issuance received     189 189
Proceeds from Issuance or Sale of Equity     204 204
Remaining proceeds held in reserve from the Preferred Equity Issuance     16 16
Net Sales to Related Parties 141 126 36  
Purchases From Related Parties 31 31 34  
MSC Holdings LLC [Member]        
Related Party Transaction [Line Items]        
Face value of the outstanding paid in kind debt facility 180      
Note receivable from parent 24      
Momentive Performance Materials Inc. [Member]        
Related Party Transaction [Line Items]        
Shared Services Costs Incurred by MSC 131 121 155  
Shared Services Costs Incurred by MPM 99 92 148  
Shared Services Billings - MSC to MPM 49 31 22  
Shared Service Cost Allocation Percentage - MSC 57.00%      
Shared Service Cost Allocation Percentage - MPM 43.00%      
Realized Cost Savings From Shared Services 4 6 24  
Due from Related Parties 9 4    
Related Party Transaction, Purchases from Related Party 8 9    
Accounts Payable, Related Parties 1      
MPM Distribution Agreement [Member]        
Related Party Transaction [Line Items]        
Related Party Transaction, Purchases from Related Party 29      
Distribution Fees 1      
Accounts Payable, Related Parties 2      
Momentive Performance Materials Holdings LLC [Member]        
Related Party Transaction [Line Items]        
Billings from Parent Company   13    
HAI [Member]        
Related Party Transaction [Line Items]        
Due from Related Parties 8 16    
Due to Related Parties 2 6    
Net Sales to Related Parties 107 104 108  
Purchases From Related Parties 36 31 31  
Cash Dividends Declared to Parent Company by Unconsolidated Subsidiaries 14 21    
Carrying Value of Assets of HAI 53 50    
Carrying Value of Liabilities of HAI 16 15    
Russian Joint Venture [Member]        
Related Party Transaction [Line Items]        
Loans and Leases Receivable, Related Parties 6      
Accounts Receivable, Related Parties, Current   6    
Maximum [Member] | Momentive Performance Materials Inc. [Member]        
Related Party Transaction [Line Items]        
Due from Related Parties 1 1    
Net Sales to Related Parties   1    
Accounts Payable, Related Parties   1    
Notes Receivable From Parent [Member]        
Related Party Transaction [Line Items]        
Forgiveness of Note Receivable from Parent   $ 24