Related Party Transactions Level 4 (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Related Party Transaction [Line Items]
Non-cash capital contribution from parent			$ 218	$ 0
Note receivable from parent	24		24		24
Apollo [Member]
Related Party Transaction [Line Items]
Annual management consulting fee			3
Annual management consulting fee percentage			2.00%
Management Consulting Fees	1		2
Interest rate on second-priority senior secured notes due 2020			9.00%
Second-priority senior secured notes due 2020	134		134
Huntsman settlement payment			225
Non-cash capital contribution from parent			218
Proceeds on Huntsman insurance recoveries			10
Fees related to the Huntsman settlement			2
Reimbursement of expenses incurred to obtain Huntsman insurance recoveries			1
Apollo share of insurance recoveries			7
Momentive Performance Materials Inc. [Member]
Related Party Transaction [Line Items]
Shared Services Costs Incurred by MPM			106	128
Realized Cost Savings From Shared Services			19	21
Shared Services Cost Allocation Percentage	49.00%		49.00%
Due from Related Parties	3		3		15
Due to Related Parties	0		0		3
Apollo Affiliates and Other Related Parties [Member]
Related Party Transaction [Line Items]
Due from Related Parties	5		5		1
Due to Related Parties	1		1		1
Issued preferred units	28,785,935		28,785,935
Warrants issued to purchase common units	28,785,935		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
Proceeds from Issuance or Sale of Equity			204
Remaining proceeds held in reserve from the Preferred Equity Issuance			16
Net Sales to Related Parties	5		11	2
Purchases From Related Parties	13	5	31	25
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		24
Momentive Performance Materials Holdings LLC [Member]
Related Party Transaction [Line Items]
Due to Related Parties	6		6		3
Billings from Parent Company	12	14	12	14
HAI [Member]
Related Party Transaction [Line Items]
Due from Related Parties	17		17		14
Due to Related Parties	4		4		4
Net Sales to Related Parties	28	26	84	86
Purchases From Related Parties	6	10	30	41
Cash Dividends Declared to Parent Company by Unconsolidated Subsidiaries		4	13	9
Carrying Value of Assets of HAI	49		49		48
Carrying Value of Liabilities of HAI	22		22		21
Russian Joint Venture [Member]
Related Party Transaction [Line Items]
Notes Receivable, Related Parties, Current	1		1		3
Accounts Receivable, Related Parties, Current	4		4		2
Momentive Specialty Chemicals Inc. [Member]
Related Party Transaction [Line Items]
Shared Services Costs Incurred by MSC			111	134
Shared Services Billings - MSC to MPM			16	5
Shared Services Cost Allocation Percentage	51.00%		51.00%
Maximum [Member] | Apollo Affiliates and Other Related Parties [Member]
Related Party Transaction [Line Items]
Net Sales to Related Parties		$ 1