Condensed Consolidating Financial Statements (Balance Sheet) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 50.2	$ 38.9	$ 37.5	$ 38.0
Accounts and notes receivable, net	469.8	422.8
Inventories, net	418.5	418.8
Other assets	67.4	57.7
Total current assets	1,005.9	938.2
Property, plant and equipment, net of accumulated depreciation of $717.2 and $682.9 in 2016 and 2015, respectively	361.4	339.6	358.6
Goodwill	195.1	195.1	209.4
Investment in subsidiaries	0.0	0.0
Deferred income taxes	136.7	145.7
Other assets, net	61.2	58.8
Intercompany receivables (payables), net	0.0	0.0
Total assets	1,760.3	1,677.4	1,764.3
Current Liabilities:
Short-term debt	52.4	204.1
Current maturities of long-term debt	200.1	31.0
Accounts payable	361.2	320.1
Accrued expenses	265.9	242.6
Income taxes payable	9.0	26.0
Total current liabilities	888.6	823.8
Long-term debt	615.7	506.0
Post-retirement benefits, other than pensions	2.8	4.1
Pensions	87.5	120.8
Other liabilities	127.7	121.1
Total liabilities	1,722.3	1,575.8
Commitments and contingencies
Total stockholders’ equity	38.0	101.6	9.0	485.7
Total liabilities and stockholders' equity	1,760.3	1,677.4
Parent [Member]
Current assets:
Cash and cash equivalents	1.2	0.5	1.0	1.1
Accounts and notes receivable, net	0.0	0.0
Inventories, net	0.0	0.0
Other assets	12.8	3.3
Total current assets	14.0	3.8
Property, plant and equipment, net of accumulated depreciation of $717.2 and $682.9 in 2016 and 2015, respectively	0.0	0.0
Goodwill	0.0	0.0
Investment in subsidiaries	1,166.9	879.0
Deferred income taxes	6.8	5.4
Other assets, net	3.6	1.5
Intercompany receivables (payables), net	(382.4)	(278.6)
Total assets	808.9	611.1
Current Liabilities:
Short-term debt	0.0	0.0
Current maturities of long-term debt	199.3	29.8
Accounts payable	18.5	16.1
Accrued expenses	6.3	15.8
Income taxes payable	(54.0)	(43.0)
Total current liabilities	170.1	18.7
Long-term debt	600.9	490.4
Post-retirement benefits, other than pensions	0.0	0.0
Pensions	0.0	0.0
Other liabilities	0.0	0.4
Total liabilities	771.0	509.5
Commitments and contingencies
Total stockholders’ equity	37.9	101.6
Total liabilities and stockholders' equity	808.9	611.1
Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	17.1	7.8	11.5	10.5
Accounts and notes receivable, net	30.6	25.9
Inventories, net	314.7	324.3
Other assets	48.8	46.9
Total current assets	411.2	404.9
Property, plant and equipment, net of accumulated depreciation of $717.2 and $682.9 in 2016 and 2015, respectively	237.6	261.8
Goodwill	134.9	134.9
Investment in subsidiaries	524.7	337.6
Deferred income taxes	113.5	126.6
Other assets, net	40.0	38.2
Intercompany receivables (payables), net	375.2	253.3
Total assets	1,837.1	1,557.3
Current Liabilities:
Short-term debt	0.0	0.0
Current maturities of long-term debt	0.4	0.8
Accounts payable	248.5	237.9
Accrued expenses	206.3	176.7
Income taxes payable	89.8	106.6
Total current liabilities	545.0	522.0
Long-term debt	14.5	15.1
Post-retirement benefits, other than pensions	2.8	4.1
Pensions	75.5	111.9
Other liabilities	119.1	114.4
Total liabilities	756.9	767.5
Commitments and contingencies
Total stockholders’ equity	1,080.2	789.8
Total liabilities and stockholders' equity	1,837.1	1,557.3
Non-Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	31.9	30.6	25.0	26.4
Accounts and notes receivable, net	439.2	396.9
Inventories, net	108.9	98.9
Other assets	67.5	67.4
Total current assets	647.5	593.8
Property, plant and equipment, net of accumulated depreciation of $717.2 and $682.9 in 2016 and 2015, respectively	123.8	77.8
Goodwill	60.2	60.2
Investment in subsidiaries	(0.5)	(0.6)
Deferred income taxes	31.1	28.4
Other assets, net	19.0	20.6
Intercompany receivables (payables), net	80.4	25.3
Total assets	961.5	805.5
Current Liabilities:
Short-term debt	52.4	204.1
Current maturities of long-term debt	0.4	0.4
Accounts payable	94.2	66.1
Accrued expenses	53.3	50.1
Income taxes payable	52.5	37.9
Total current liabilities	252.8	358.6
Long-term debt	0.3	0.5
Post-retirement benefits, other than pensions	0.0	0.0
Pensions	12.0	8.9
Other liabilities	11.1	10.5
Total liabilities	276.2	378.5
Commitments and contingencies
Total stockholders’ equity	685.3	427.0
Total liabilities and stockholders' equity	961.5	805.5
Eliminations [Member]
Current assets:
Cash and cash equivalents	0.0	0.0	$ 0.0	$ 0.0
Accounts and notes receivable, net	0.0	0.0
Inventories, net	(5.1)	(4.4)
Other assets	(61.7)	(59.9)
Total current assets	(66.8)	(64.3)
Property, plant and equipment, net of accumulated depreciation of $717.2 and $682.9 in 2016 and 2015, respectively	0.0	0.0
Goodwill	0.0	0.0
Investment in subsidiaries	(1,691.1)	(1,216.0)
Deferred income taxes	(14.7)	(14.7)
Other assets, net	(1.4)	(1.5)
Intercompany receivables (payables), net	(73.2)	0.0
Total assets	(1,847.2)	(1,296.5)
Current Liabilities:
Short-term debt	0.0	0.0
Current maturities of long-term debt	0.0	0.0
Accounts payable	0.0	0.0
Accrued expenses	0.0	0.0
Income taxes payable	(79.3)	(75.5)
Total current liabilities	(79.3)	(75.5)
Long-term debt	0.0	0.0
Post-retirement benefits, other than pensions	0.0	0.0
Pensions	0.0	0.0
Other liabilities	(2.5)	(4.2)
Total liabilities	(81.8)	(79.7)
Commitments and contingencies
Total stockholders’ equity	(1,765.4)	(1,216.8)
Total liabilities and stockholders' equity	$ (1,847.2)	$ (1,296.5)