Related Party Transactions Level 4 (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Related Party Transaction [Line Items]
sales to joint venture	$ 10	$ 7	$ 22	$ 11
Due from Joint Ventures	3		3		$ 15
Purchases from JV	12		24
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			37	51
Apollo Affiliates and Other Related Parties [Member]
Related Party Transaction [Line Items]
Revenue from Related Parties	$ 23	34	47	76
Purchases From Related Parties		1	1	$ 2
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
Purchases From Related Parties		2	2	$ 4
Purchases Related to Distribution Agreement	$ 7	10	14	10
AP related to distribution agreement					2
HAI [Member]
Related Party Transaction [Line Items]
Due to Related Parties					2
Revenue from Related Parties	$ 18	29	$ 39	56
Equity Method Investment, Ownership Percentage	50.00%		50.00%
Due from Related Parties					8
Purchases From Related Parties	$ 4	8	$ 9	15
Cash Dividends Declared to Parent Company by Unconsolidated Subsidiaries	5	3	9	6
Future price concessions	16		16
settlement discounts issued to related party	1		3
Settlements Outstanding	4		4		7
Russian Joint Venture [Member]
Related Party Transaction [Line Items]
Accounts Receivable, Related Parties, Current	6		6		6
Hexion Inc. [Member]
Related Party Transaction [Line Items]
Shared Services Costs Incurred by Hexion			45	67
Shared Services Billings - Hexion to MPM			24	20
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	4		4		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	12		$ 12		11
Purchases From Related Parties	1
Maximum [Member] | Momentive Performance Materials Inc. [Member]
Related Party Transaction [Line Items]
Due to Related Parties					1
Revenue from Related Parties	1	$ 1
Due from Related Parties	1		$ 1		$ 1
Purchases From Related Parties	$ 1