Consolidated Statements of Operations - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net sales	[1]	$ 2,331	$ 2,233	$ 2,289
Cost of Goods Sold		1,831	1,845	1,894
Gross Profit		500	388	395
Costs and expenses:
Selling, general and administrative expenses		333	347	285
Depreciation and amortization expenses		154	185	153
Research and development expenses		64	64	65
Restructuring and Discrete Costs		6	42	32
Other Operating Income (Expense), Net		9	19	2
Operating (loss) income		88	(84)	11
Other income (expense):
Other income, net		(8)	(7)	3
Loss on extinguishment and exchange of debt		0	(9)	(7)
Reorganization Items		1	2	8
(Loss) income before income taxes and losses from unconsolidated entities		15	(146)	(72)
Income taxes (note 8)		(15)	(18)	(13)
Loss before earnings from unconsolidated entities		0	(164)	(85)
Earnings from unconsolidated entities		0	1	2
Net Income (Loss) Attributable to Parent		$ 0	$ (163)	$ (83)
Earnings Per Share, Basic		$ 0.00	$ (3.39)	$ (1.73)
Earnings Per Share, Diluted		$ 0.00	$ (3.39)	$ (1.73)
Weighted Average Number of Shares Outstanding, Basic		48,112,584	48,050,048	48,015,685
Weighted Average Number of Shares Outstanding, Diluted		48,341,916	48,050,048	48,015,685
Interest Expense		$ 80	$ 76	$ 79
Interest Income (Expense), Net		80	76	79
Retained Earnings [Member]
Other income (expense):
Net Income (Loss) Attributable to Parent		(163)
Parent Company [Member]
Net sales		0	0	0
Cost of Goods Sold		0	0	0
Gross Profit		0	0	0
Costs and expenses:
Selling, general and administrative expenses		0	1	0
Research and development expenses		0	0	0
Restructuring and Discrete Costs		0	0	0
Other Operating Income (Expense), Net		0	0	(2)
Operating (loss) income		0	(1)	2
Other income (expense):
Other income, net		(2)	(8)	0
Reorganization Items		0	0	0
(Loss) income before income taxes and losses from unconsolidated entities		(73)	(56)	(68)
Income taxes (note 8)		0	0	0
Loss before earnings from unconsolidated entities		(73)	(56)	(68)
Earnings from unconsolidated entities		74	(105)	(14)
Interest Expense		75	72	77
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest		59	(145)	(146)
MPM Inc [Member]
Net sales		2,331	2,233	2,289
Cost of Goods Sold		1,831	1,845	1,894
Gross Profit		500	388	395
Costs and expenses:
Selling, general and administrative expenses		332	345	284
Research and development expenses		64	64	65
Restructuring and Discrete Costs		6	42	32
Other Operating Income (Expense), Net		9	19	2
Operating (loss) income		89	(82)	12
Other income (expense):
Other income, net		(8)	(7)	3
Loss on extinguishment and exchange of debt		0	(9)	(7)
Reorganization Items		1	2	8
(Loss) income before income taxes and losses from unconsolidated entities		16	(144)	(71)
Income taxes (note 8)		(15)	(18)	(13)
Loss before earnings from unconsolidated entities		1	(162)	(84)
Earnings from unconsolidated entities		0	1	2
Net Income (Loss) Attributable to Parent		1	(161)	(82)
Interest Expense		80	76	79
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest		59	(145)	(146)
Guarantor Subsidiaries [Member]
Net sales		1,128	1,047	1,062
Cost of Goods Sold		958	913	927
Gross Profit		170	134	135
Costs and expenses:
Selling, general and administrative expenses		178	183	137
Research and development expenses		42	39	41
Restructuring and Discrete Costs		23	10	26
Other Operating Income (Expense), Net		14	3	2
Operating (loss) income		(87)	(101)	(71)
Other income (expense):
Other income, net		(6)	1	(1)
Reorganization Items		1	2	8
(Loss) income before income taxes and losses from unconsolidated entities		(55)	(60)	(19)
Income taxes (note 8)		0	10	(1)
Loss before earnings from unconsolidated entities		(55)	(50)	(20)
Earnings from unconsolidated entities		129	(55)	6
Interest Expense		(27)	(44)	(59)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest		131	(88)	(79)
Non-Guarantor Subsidiaries [Member]
Net sales		1,838	1,775	1,783
Cost of Goods Sold		1,508	1,521	1,523
Gross Profit		330	254	260
Costs and expenses:
Selling, general and administrative expenses		154	161	147
Research and development expenses		22	25	24
Restructuring and Discrete Costs		(17)	32	6
Other Operating Income (Expense), Net		(5)	16	2
Operating (loss) income		176	20	81
Other income (expense):
Other income, net		0	0	4
Reorganization Items		0	0	0
(Loss) income before income taxes and losses from unconsolidated entities		144	(28)	16
Income taxes (note 8)		(15)	(28)	(12)
Loss before earnings from unconsolidated entities		129	(56)	4
Earnings from unconsolidated entities		0	1	2
Interest Expense		32	48	61
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest		$ 139	$ (49)	$ (14)

[1] sales are not significant and, as such, are eliminated within the selling segment.