Related Party Transactions Level 4 (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Related Party Transaction [Line Items]
sales to joint venture	$ 4	$ 10	$ 8	$ 22
Due from Joint Ventures	6		6		$ 10
due to joint ventures	6		6		2
Apollo [Member]
Related Party Transaction [Line Items]
Annual management consulting fee			$ 3
Annual management consulting fee percentage			2.00%
Related Party Costs	1	1
Subsidiary of Common Parent [Member]
Related Party Transaction [Line Items]
Shared Services Costs Incurred by MPM			$ 29	37
Apollo Affiliates and Other Related Parties [Member]
Related Party Transaction [Line Items]
Revenue from Related Parties	2	23	6	47
Due from Related Parties	1		1
Purchases From Related Parties				1
Momentive Performance Materials Inc. [Member]
Related Party Transaction [Line Items]
Due to Related Parties					1
Purchases From Related Parties	1		1	2
Purchases Related to Distribution Agreement	7	7	14	14
Revenues from distribution agreement	1
AP related to distribution agreement	2		2		2
HAI [Member]
Related Party Transaction [Line Items]
Due to Related Parties	1		1		1
Revenue from Related Parties	$ 10	18	$ 26	39
Equity Method Investment, Ownership Percentage	50.00%		50.00%
Due from Related Parties	$ 1		$ 1		1
Purchases From Related Parties	1	4	4	9
Cash Dividends Declared to Parent Company by Unconsolidated Subsidiaries		5	4	9
settlement discounts issued to related party			1	1
Russian Joint Venture [Member]
Related Party Transaction [Line Items]
Accounts Receivable, Related Parties, Current	2		2		2
Loans and Leases Receivable, Related Parties	6		6		6
Hexion Inc. [Member]
Related Party Transaction [Line Items]
Shared Services Costs Incurred by Hexion			39	45
Shared Services Billings - Hexion to MPM			16	24
Maximum [Member]
Related Party Transaction [Line Items]
Purchases from JV	2	12	6	$ 24
Maximum [Member] | Subsidiary of Common Parent [Member]
Related Party Transaction [Line Items]
Due from Related Parties	3		3		7
Maximum [Member] | Apollo Affiliates and Other Related Parties [Member]
Related Party Transaction [Line Items]
Due to Related Parties	1		1		1
Maximum [Member] | Momentive Performance Materials Inc. [Member]
Related Party Transaction [Line Items]
Due to Related Parties	1		1
Revenue from Related Parties	1	$ 1
Due from Related Parties	$ 1		$ 1		$ 1