Related Party Transactions Level 4 (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Apollo [Member]
Related Party Transaction [Line Items]
Annual management consulting fee			$ 3
Annual management consulting fee percentage			2.00%
Related Party Costs	$ 1	$ 1	$ 1	$ 2
Subsidiary of Common Parent [Member]
Related Party Transaction [Line Items]
Shared Services Costs Incurred by MPM			23	29
Apollo Affiliates and Other Related Parties [Member]
Related Party Transaction [Line Items]
Due to Related Parties					$ 1
Revenue from Related Parties	1	2
Due from Related Parties	1		1		1
Purchases From Related Parties		1		1
Momentive Performance Materials Inc. [Member]
Related Party Transaction [Line Items]
Accounts Receivable shared services costs	2		2		5
Purchases Related to Distribution Agreement
Revenues from distribution agreement	1		1	1
AP related to distribution agreement	2		2		2
HAI [Member]
Related Party Transaction [Line Items]
Due from Related Parties	1		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
Other joint ventures unconsolidated [Member]
Related Party Transaction [Line Items]
sales to joint venture	4	14	8	34
Due from Joint Ventures	4		4		7
Purchases from JV			3	4
due to joint ventures	1		1		1
Hexion Inc. [Member]
Related Party Transaction [Line Items]
Shared Services Costs Incurred by Hexion			31	39
Shared Services Billings - Hexion to MPM			15	16
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	$ 7	$ 7	$ 12	$ 15