Condensed Consolidating Statements of Financial Position (Detail) (USD $) In Millions, unless otherwise specified	Feb. 28, 2013	Nov. 30, 2012	Feb. 29, 2012	Nov. 30, 2011
Current Assets
Cash and cash equivalents	$ 116.5	$ 143.0	$ 118.6	$ 98.9
Restricted cash	5.5	5.5
Accounts receivable, net	144.3	130.1
Inventories	101.2	96.2
Deferred income taxes - current	10.7	10.7
Prepaid expenses and other	17.2	14.8
Assets held for sale - current		0
Total Current Assets	395.4	400.3
Property, plant and equipment, net	221.6	222.8
Trademarks, intangibles and other assets, net	176.4	177.6
Deferred income taxes - non-current	65.7	65.7
Investments in subsidiaries and intercompany	0	0
Other assets	7.3	7.3
Total Assets	866.4	873.7
Current Liabilities
Loans Payable to Bank Current	10.5	9.6
Accounts payable	95.8	102.8
Accrued payroll and personal property taxes	16.2	21.8
Employee benefit obligations	2.1	2.1
Deferred income taxes - current	0	0
Other current liabilities	15.1	9.2
Liabilities held for sale - current		0
Total Current Liabilities	139.7	145.5
Long-term debt	442.2	442.6
Postretirement benefits other than pensions	7.6	7.7
Pension liabilities	108.7	111.4
Deferred income taxes - non-current	23.8	23.9
Intercompany	0	0
Other liabilities	11.1	12.4
Total Liabilities	733.1	743.5
Shareholders' Equity
Common stock	4.8	4.7
Additional contributed capital	332.6	331.8
Retained earnings (deficit)	(87.4)	(87.2)
Treasury stock	(4.6)	(4.4)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(112.1)	(114.7)
Total Shareholders' Equity	133.3	130.2
Total Liabilities and Shareholders' Equity	866.4	873.7
OMNOVA Solutions (Parent)
Current Assets
Cash and cash equivalents	72.6	98.7	84.0	55.1
Restricted cash	5.5	5.5
Accounts receivable, net	71.8	68.8
Inventories	50.3	45.7
Deferred income taxes - current	7.2	6.3
Prepaid expenses and other	7.4	7.2
Assets held for sale - current		0
Total Current Assets	214.8	232.2
Property, plant and equipment, net	109.0	110.2
Trademarks, intangibles and other assets, net	88.8	89.8
Deferred income taxes - non-current	66.7	67.0
Investments in subsidiaries and intercompany	458.0	456.6
Other assets	1.1	1.1
Total Assets	938.4	956.9
Current Liabilities
Loans Payable to Bank Current	2.0	2.0
Accounts payable	44.4	54.2
Accrued payroll and personal property taxes	11.8	16.4
Employee benefit obligations	2.1	2.1
Deferred income taxes - current	0	0
Other current liabilities	12.7	9.1
Liabilities held for sale - current		0
Total Current Liabilities	73.0	83.8
Long-term debt	442.2	442.6
Postretirement benefits other than pensions	7.6	7.7
Pension liabilities	96.2	99.2
Deferred income taxes - non-current	0	0
Intercompany	177.9	183.8
Other liabilities	8.2	9.6
Total Liabilities	805.1	826.7
Shareholders' Equity
Common stock	4.8	4.7
Additional contributed capital	332.6	331.8
Retained earnings (deficit)	(87.4)	(87.2)
Treasury stock	(4.6)	(4.4)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(112.1)	(114.7)
Total Shareholders' Equity	133.3	130.2
Total Liabilities and Shareholders' Equity	938.4	956.9
Guarantor Subsidiaries
Current Assets
Cash and cash equivalents	0	0	0	0
Restricted cash	0	0
Accounts receivable, net	0	0
Inventories	0	0
Deferred income taxes - current	0	0
Prepaid expenses and other	0	0
Assets held for sale - current		0
Total Current Assets	0	0
Property, plant and equipment, net	0	0
Trademarks, intangibles and other assets, net	0	0
Deferred income taxes - non-current	0	0
Investments in subsidiaries and intercompany	203.3	203.8
Other assets	3.8	3.8
Total Assets	207.1	207.6
Current Liabilities
Loans Payable to Bank Current	0	0
Accounts payable	0.3	0.2
Accrued payroll and personal property taxes	0	0
Employee benefit obligations	0	0
Deferred income taxes - current	0	0
Other current liabilities	2.6	2.7
Liabilities held for sale - current		0
Total Current Liabilities	2.9	2.9
Long-term debt	0	0
Postretirement benefits other than pensions	0	0
Pension liabilities	0	0
Deferred income taxes - non-current	0	0
Intercompany	143.1	141.3
Other liabilities	0	0
Total Liabilities	146.0	144.2
Shareholders' Equity
Common stock	0	0
Additional contributed capital	153.1	153.2
Retained earnings (deficit)	(87.8)	(86.4)
Treasury stock	0	0
Accumulated Other Comprehensive Income (Loss), Net of Tax	(4.2)	(3.4)
Total Shareholders' Equity	61.1	63.4
Total Liabilities and Shareholders' Equity	207.1	207.6
Non-Guarantor Subsidiaries
Current Assets
Cash and cash equivalents	43.9	44.3	34.6	43.8
Restricted cash	0	0
Accounts receivable, net	72.5	61.3
Inventories	51.8	51.6
Deferred income taxes - current	4.0	8.5
Prepaid expenses and other	9.8	4.0
Assets held for sale - current		0
Total Current Assets	182.0	169.7
Property, plant and equipment, net	112.6	112.6
Trademarks, intangibles and other assets, net	87.6	87.8
Deferred income taxes - non-current	6.1	6.1
Investments in subsidiaries and intercompany	161.9	460.3
Other assets	2.4	2.4
Total Assets	552.6	838.9
Current Liabilities
Loans Payable to Bank Current	8.5	7.6
Accounts payable	51.1	48.6
Accrued payroll and personal property taxes	4.4	5.4
Employee benefit obligations	0	0
Deferred income taxes - current	0.6	0.6
Other current liabilities	1.7	3.2
Liabilities held for sale - current		0
Total Current Liabilities	66.3	65.4
Long-term debt	0	0
Postretirement benefits other than pensions	0	0
Pension liabilities	12.5	12.2
Deferred income taxes - non-current	30.9	31.3
Intercompany	374.9	674.7
Other liabilities	2.9	2.7
Total Liabilities	487.5	786.3
Shareholders' Equity
Common stock	16.2	16.2
Additional contributed capital	13.5	4.9
Retained earnings (deficit)	37.3	34.6
Treasury stock	0	0
Accumulated Other Comprehensive Income (Loss), Net of Tax	(1.9)	(3.1)
Total Shareholders' Equity	65.1	52.6
Total Liabilities and Shareholders' Equity	552.6	838.9
Eliminations
Current Assets
Cash and cash equivalents	0	0	0	0
Restricted cash	0	0
Accounts receivable, net	0	0
Inventories	(0.9)	(1.1)
Deferred income taxes - current	(0.5)	0
Prepaid expenses and other	0	(0.5)
Assets held for sale - current		0
Total Current Assets	(1.4)	(1.6)
Property, plant and equipment, net	0	0
Trademarks, intangibles and other assets, net	0	0
Deferred income taxes - non-current	(7.1)	(7.4)
Investments in subsidiaries and intercompany	(823.2)	(1,120.7)
Other assets	0	0
Total Assets	(831.7)	(1,129.7)
Current Liabilities
Loans Payable to Bank Current	0	0
Accounts payable	0	(0.2)
Accrued payroll and personal property taxes	0	0
Employee benefit obligations	0	0
Deferred income taxes - current	(0.6)	(0.6)
Other current liabilities	(1.9)	(5.8)
Liabilities held for sale - current		0
Total Current Liabilities	(2.5)	(6.6)
Long-term debt	0	0
Postretirement benefits other than pensions	0	0
Pension liabilities	0	0
Deferred income taxes - non-current	(7.1)	(7.4)
Intercompany	(695.9)	(999.8)
Other liabilities	0	0.1
Total Liabilities	(705.5)	(1,013.7)
Shareholders' Equity
Common stock	(16.2)	(16.2)
Additional contributed capital	(166.6)	(158.1)
Retained earnings (deficit)	50.5	51.8
Treasury stock	0	0
Accumulated Other Comprehensive Income (Loss), Net of Tax	6.1	6.5
Total Shareholders' Equity	(126.2)	(116.0)
Total Liabilities and Shareholders' Equity	$ (831.7)	$ (1,129.7)