Condensed Consolidating Financial Information (Details 3) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011	Dec. 31, 2010
Current assets
Cash and cash equivalents	$ 6.6	$ 12.8	$ 3.8	$ 48.3
Restricted cash		7.0
Accounts receivable, net	99.8	71.4
Inventories	99.3	68.8
Income taxes receivable	2.5	1.9
Deferred income taxes	29.3	17.6
Prepaid and other current assets	11.9	14.0
Total Current Assets	249.4	193.5
Property, plant and equipment, at cost	591.0	579.2
Less accumulated depreciation	343.6	326.9
Property, plant and equipment-net	247.4	252.3
Deferred Income Taxes	25.5	45.5
Goodwill	40.3	40.5
Intangible Assets-net	34.1	21.9
Other Assets	10.7	11.4
TOTAL ASSETS	607.4	565.1
Current liabilities
Debt payable within one year	1.6	21.7
Accounts payable	42.4	30.2
Accrued expenses	56.0	51.6
Total Current Liabilities	100.0	103.5
Long-term Debt	181.5	164.5
Deferred Income Taxes	14.7	16.0
Noncurrent Employee Benefits and Other	107.3	114.4
TOTAL LIABILITIES	403.5	398.4
STOCKHOLDERS' EQUITY	203.9	166.7
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	607.4	565.1
Neenah Paper, Inc.
Current assets
Cash and cash equivalents		9.7	0.1	45.0
Restricted cash		7.0
Accounts receivable, net	45.7	22.9
Inventories	57.1	33.4
Deferred income taxes	26.4	15.4
Intercompany amounts receivable	18.9	18.1
Prepaid and other current assets	5.0	5.6
Total Current Assets	153.1	112.1
Property, plant and equipment, at cost	275.9	269.2
Less accumulated depreciation	204.7	198.5
Property, plant and equipment-net	71.2	70.7
Investments In Subsidiaries	246.5	225.0
Deferred Income Taxes	20.8	38.7
Intangible Assets-net	16.2	2.8
Other Assets	5.2	5.8
TOTAL ASSETS	513.0	455.1
Current liabilities
Accounts payable	25.7	16.0
Intercompany amounts payable	44.2	42.4
Accrued expenses	31.5	32.4
Total Current Liabilities	101.4	90.8
Long-term Debt	175.8	158.0
Noncurrent Employee Benefits and Other	31.9	39.6
TOTAL LIABILITIES	309.1	288.4
STOCKHOLDERS' EQUITY	203.9	166.7
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	513.0	455.1
Guarantor Subsidiaries
Current assets
Cash and cash equivalents	1.7	2.0	2.1	2.4
Accounts receivable, net	18.9	18.1
Inventories	12.4	9.4
Deferred income taxes	2.5	2.2
Intercompany amounts receivable	44.3	42.4
Prepaid and other current assets	2.0	2.0
Total Current Assets	81.8	76.1
Property, plant and equipment, at cost	103.1	100.4
Less accumulated depreciation	69.1	66.8
Property, plant and equipment-net	34.0	33.6
Deferred Income Taxes	4.7	6.8
Other Assets	0.1	0.1
TOTAL ASSETS	120.6	116.6
Current liabilities
Accounts payable	5.3	6.6
Intercompany amounts payable	18.8	18.1
Accrued expenses	8.4	7.5
Total Current Liabilities	32.5	32.2
Noncurrent Employee Benefits and Other	38.3	37.7
TOTAL LIABILITIES	70.8	69.9
STOCKHOLDERS' EQUITY	49.8	46.7
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	120.6	116.6
Non-Guarantor Subsidiaries
Current assets
Cash and cash equivalents	4.9	1.1	1.6	0.9
Accounts receivable, net	35.2	30.4
Inventories	29.8	26.0
Income taxes receivable	2.5	1.9
Deferred income taxes	0.4
Prepaid and other current assets	4.9	6.4
Total Current Assets	77.7	65.8
Property, plant and equipment, at cost	212.0	209.6
Less accumulated depreciation	69.8	61.6
Property, plant and equipment-net	142.2	148.0
Goodwill	40.3	40.5
Intangible Assets-net	17.9	19.1
Other Assets	5.4	5.5
TOTAL ASSETS	283.5	278.9
Current liabilities
Debt payable within one year	1.6	21.7
Accounts payable	11.4	7.6
Intercompany amounts payable	0.2
Accrued expenses	16.1	11.7
Total Current Liabilities	29.3	41.0
Long-term Debt	5.7	6.5
Deferred Income Taxes	14.7	16.0
Noncurrent Employee Benefits and Other	37.1	37.1
TOTAL LIABILITIES	86.8	100.6
STOCKHOLDERS' EQUITY	196.7	178.3
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	283.5	278.9
Consolidating Adjustments
Current assets
Intercompany amounts receivable	(63.2)	(60.5)
Total Current Assets	(63.2)	(60.5)
Investments In Subsidiaries	(246.5)	(225.0)
TOTAL ASSETS	(309.7)	(285.5)
Current liabilities
Intercompany amounts payable	(63.2)	(60.5)
Total Current Liabilities	(63.2)	(60.5)
TOTAL LIABILITIES	(63.2)	(60.5)
STOCKHOLDERS' EQUITY	(246.5)	(225.0)
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ (309.7)	$ (285.5)