Related Party Transactions Level 4 (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Related Party Transaction [Line Items]
sales to joint venture	$ 9	$ 4	$ 31	$ 15
Due from Joint Ventures	9		9		$ 15
Purchases from JV			25
due to joint ventures	10		10		26
Apollo [Member]
Related Party Transaction [Line Items]
Annual management consulting fee			$ 3
Annual management consulting fee percentage			2.00%
Related Party Costs	1	1	$ 2	2
Momentive Performance Materials Inc. [Member]
Related Party Transaction [Line Items]
Shared Services Costs Incurred by MPM			49	76
Apollo Affiliates and Other Related Parties [Member]
Related Party Transaction [Line Items]
Revenue from Related Parties	$ 8	14	55	90
Purchases From Related Parties			2	4
Apollo Global Securities [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Other Revenues from Transactions with Related Party			1
Momentive Performance Materials Inc. [Member]
Related Party Transaction [Line Items]
Due to Related Parties					1
Revenue from Related Parties				1
Purchases From Related Parties		2	3	6
Purchases Related to Distribution Agreement	$ 7	10	21	20
Revenues from distribution agreement	1		0
AP related to distribution agreement	3		3		2
HAI [Member]
Related Party Transaction [Line Items]
Due to Related Parties	1		1		0
Revenue from Related Parties	$ 17	27	$ 56	83
Equity Method Investment, Ownership Percentage	50.00%		50.00%
Due from Related Parties	$ 0		$ 0		8
Purchases From Related Parties	3	12	12	27
Cash Dividends Declared to Parent Company by Unconsolidated Subsidiaries	5	3	14	9
Future price concessions	16		16
settlement discounts issued to related party	1		4
Settlement Liabilities, Current	5		5		5
Settlements Outstanding	3		3		7
Russian Joint Venture [Member]
Related Party Transaction [Line Items]
Accounts Receivable, Related Parties, Current	6		6		6
Unconsolidated JV [Member]
Related Party Transaction [Line Items]
Restricted Cash and Cash Equivalents					11
Hexion Inc. [Member]
Related Party Transaction [Line Items]
Shared Services Costs Incurred by Hexion			58	100
Shared Services Billings - Hexion to MPM			30	31
Maximum [Member]
Related Party Transaction [Line Items]
Purchases from JV	1			$ 1
Maximum [Member] | Momentive Performance Materials Inc. [Member]
Related Party Transaction [Line Items]
Due from Related Parties	5		5		9
Maximum [Member] | Apollo Affiliates and Other Related Parties [Member]
Related Party Transaction [Line Items]
Due to Related Parties	1		1		1
Due from Related Parties	3		3		11
Purchases From Related Parties	1	0
Maximum [Member] | Momentive Performance Materials Inc. [Member]
Related Party Transaction [Line Items]
Due to Related Parties					1
Revenue from Related Parties	1	$ 1	1
Due from Related Parties	1		$ 1		$ 1
Purchases From Related Parties	$ 1