Guarantor Non-Guarantor Subsidiary Financial Information Level 4 (Details) - Consolidating Balance Sheets - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents (including restricted cash of $0 and $18, respectively)	$ 190	$ 236
Accounts receivable, net	520	450
Intercompany accounts receivable	0	0
Intercompany loans receivable - current portion	0	0
Finished and in-process goods	209	218
Raw materials and supplies	97	90
Other current assets	125	53
Total current assets	1,141	1,047
Investment in unconsolidated entities	22	36
Deferred income taxes	10	13
Other assets, net	45	48
Intercompany loans receivable	0	0
Property, Plant and Equipment, Net	909	1,051
Goodwill	123	122
Other intangible assets, net	59	65
Total assets	2,309	2,382
Current liabilities
Accounts and drafts payable	346	386
Intercompany accounts payable	0	0
Debt payable within one year	67	80
Intercompany loans payable within one year	0	0
Interest payable	74	82
Income taxes payable	17	15
Accrued payroll and incentive compensation	54	78
Other current liabilities	158	123
Total current liabilities	716	764
Long-term liabilities
Long-term debt	3,555	3,698
Intercompany loans payable	0	0
Accumulated losses of unconsolidated subsidiaries in excess of investment	0	0
Long-term pension and post employment benefit obligations	222	224
Deferred income taxes	14	12
Other long-term liabilities	173	161
Total liabilities	4,680	4,859
Total Hexion Inc. shareholder’s deficit	(2,370)	(2,476)
Noncontrolling interest	(1)	(1)
Total deficit	(2,371)	(2,477)
Total liabilities and deficit	2,309	2,382
Hexion Inc. [Member]
Current assets
Cash and cash equivalents (including restricted cash of $0 and $18, respectively)	43	62
Accounts receivable, net	136	115
Intercompany accounts receivable	89	132
Intercompany loans receivable - current portion	0	0
Finished and in-process goods	101	97
Raw materials and supplies	38	34
Other current assets	97	29
Total current assets	504	469
Investment in unconsolidated entities	78	117
Deferred income taxes	0	0
Other assets, net	16	21
Intercompany loans receivable	1,163	1,269
Property, Plant and Equipment, Net	467	559
Goodwill	66	65
Other intangible assets, net	45	49
Total assets	2,339	2,549
Current liabilities
Accounts and drafts payable	108	148
Intercompany accounts payable	34	154
Debt payable within one year	0	6
Intercompany loans payable within one year	186	174
Interest payable	72	80
Income taxes payable	7	7
Accrued payroll and incentive compensation	25	43
Other current liabilities	104	73
Total current liabilities	536	685
Long-term liabilities
Long-term debt	3,464	3,656
Intercompany loans payable	205	93
Accumulated losses of unconsolidated subsidiaries in excess of investment	332	429
Long-term pension and post employment benefit obligations	43	45
Deferred income taxes	5	6
Other long-term liabilities	124	111
Total liabilities	4,709	5,025
Total Hexion Inc. shareholder’s deficit	(2,370)	(2,476)
Noncontrolling interest	0	0
Total deficit	(2,370)	(2,476)
Total liabilities and deficit	2,339	2,549
Combined Subsidiary Guarantors [Member]
Current assets
Cash and cash equivalents (including restricted cash of $0 and $18, respectively)	0	0
Accounts receivable, net	1	1
Intercompany accounts receivable	0	0
Intercompany loans receivable - current portion	0	0
Finished and in-process goods	0	0
Raw materials and supplies	0	0
Other current assets	0	0
Total current assets	1	1
Investment in unconsolidated entities	13	28
Deferred income taxes	0	0
Other assets, net	6	6
Intercompany loans receivable	6	6
Property, Plant and Equipment, Net	0	0
Goodwill	0	0
Other intangible assets, net	0	0
Total assets	26	41
Current liabilities
Accounts and drafts payable	0	0
Intercompany accounts payable	0	0
Debt payable within one year	0	0
Intercompany loans payable within one year	0	0
Interest payable	0	0
Income taxes payable	0	0
Accrued payroll and incentive compensation	0	0
Other current liabilities	0	0
Total current liabilities	0	0
Long-term liabilities
Long-term debt	0	0
Intercompany loans payable	6	6
Accumulated losses of unconsolidated subsidiaries in excess of investment	91	130
Long-term pension and post employment benefit obligations	0	0
Deferred income taxes	0	0
Other long-term liabilities	0	0
Total liabilities	97	136
Total Hexion Inc. shareholder’s deficit	(71)	(95)
Noncontrolling interest	0	0
Total deficit	(71)	(95)
Total liabilities and deficit	26	41
Combined Non-Guarantor Subsidiaries [Member]
Current assets
Cash and cash equivalents (including restricted cash of $0 and $18, respectively)	147	174
Accounts receivable, net	383	334
Intercompany accounts receivable	34	154
Intercompany loans receivable - current portion	186	174
Finished and in-process goods	108	121
Raw materials and supplies	59	56
Other current assets	28	24
Total current assets	945	1,037
Investment in unconsolidated entities	22	21
Deferred income taxes	10	13
Other assets, net	23	21
Intercompany loans receivable	208	108
Property, Plant and Equipment, Net	442	492
Goodwill	57	57
Other intangible assets, net	14	16
Total assets	1,721	1,765
Current liabilities
Accounts and drafts payable	238	238
Intercompany accounts payable	89	132
Debt payable within one year	67	74
Intercompany loans payable within one year	0	0
Interest payable	2	2
Income taxes payable	10	8
Accrued payroll and incentive compensation	29	35
Other current liabilities	54	50
Total current liabilities	489	539
Long-term liabilities
Long-term debt	91	42
Intercompany loans payable	1,166	1,284
Accumulated losses of unconsolidated subsidiaries in excess of investment	0	0
Long-term pension and post employment benefit obligations	179	179
Deferred income taxes	9	6
Other long-term liabilities	49	50
Total liabilities	1,983	2,100
Total Hexion Inc. shareholder’s deficit	(261)	(334)
Noncontrolling interest	(1)	(1)
Total deficit	(262)	(335)
Total liabilities and deficit	1,721	1,765
Eliminations [Member]
Current assets
Cash and cash equivalents (including restricted cash of $0 and $18, respectively)	0	0
Accounts receivable, net	0	0
Intercompany accounts receivable	(123)	(286)
Intercompany loans receivable - current portion	(186)	(174)
Finished and in-process goods	0	0
Raw materials and supplies	0	0
Other current assets	0	0
Total current assets	(309)	(460)
Investment in unconsolidated entities	(91)	(130)
Deferred income taxes	0	0
Other assets, net	0	0
Intercompany loans receivable	(1,377)	(1,383)
Property, Plant and Equipment, Net	0	0
Goodwill	0	0
Other intangible assets, net	0	0
Total assets	(1,777)	(1,973)
Current liabilities
Accounts and drafts payable	0	0
Intercompany accounts payable	(123)	(286)
Debt payable within one year	0	0
Intercompany loans payable within one year	(186)	(174)
Interest payable	0	0
Income taxes payable	0	0
Accrued payroll and incentive compensation	0	0
Other current liabilities	0	0
Total current liabilities	(309)	(460)
Long-term liabilities
Long-term debt	0	0
Intercompany loans payable	(1,377)	(1,383)
Accumulated losses of unconsolidated subsidiaries in excess of investment	(423)	(559)
Long-term pension and post employment benefit obligations	0	0
Deferred income taxes	0	0
Other long-term liabilities	0	0
Total liabilities	(2,109)	(2,402)
Total Hexion Inc. shareholder’s deficit	332	429
Noncontrolling interest	0	0
Total deficit	332	429
Total liabilities and deficit	$ (1,777)	$ (1,973)