Related Party Transactions Level 4 (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
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
Subsidiary of Common Parent [Member]
Related Party Transaction [Line Items]
Shared Services Costs Incurred by MPM			38	49
Apollo Affiliates and Other Related Parties [Member]
Related Party Transaction [Line Items]
Due to Related Parties	1		1		$ 1
Revenue from Related Parties	1	8	6	55
Due from Related Parties	1		1		1
Purchases From Related Parties	1	1	1	2
Momentive Performance Materials Inc. [Member]
Related Party Transaction [Line Items]
Accounts Receivable shared services costs	5		5		7
Purchases Related to Distribution Agreement	7	7	21	21
Revenues from distribution agreement	1		1	1
AP related to distribution agreement	$ 2		2		2
HAI [Member]
Related Party Transaction [Line Items]
Due to Related Parties					1
Revenue from Related Parties		17	$ 26	56
Equity Method Investment, Ownership Percentage	50.00%		50.00%
Due from Related Parties	$ 1		$ 1		1
Purchases From Related Parties		3	4	12
Cash Dividends Declared to Parent Company by Unconsolidated Subsidiaries		5	4	14
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
Other joint ventures unconsolidated [Member]
Related Party Transaction [Line Items]
sales to joint venture	4	9	12	31
Due from Joint Ventures	5		5		10
Purchases from JV	4	1	10	25
due to joint ventures	1		1		2
Hexion Inc. [Member]
Related Party Transaction [Line Items]
Shared Services Costs Incurred by Hexion			50	58
Shared Services Billings - Hexion to MPM			23	30
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		1
Revenue from Related Parties	1	1	1	1
Due from Related Parties	1		1		$ 1
Purchases From Related Parties	$ 1	$ 1	$ 1	$ 3