Condensed Consolidating Financial Statements (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents	$ 48.1	$ 38.0	$ 37.8	$ 51.8
Accounts and notes receivable, net	501.5	408.1
Inventories, net	501.5	378.8
Deferred income taxes, net	23.8	24.5
Other assets	61.6	53.0
Total current assets	1,136.5	902.4
Property, plant and equipment, net	350.5	335.5
Goodwill	214.1	216.8
Investments in subsidiaries	0	0
Deferred income taxes	86.2	88.5
Other assets, net	89.2	83.5
Intercompany receivables (payables)	0	0
Total assets	1,876.5	1,626.7
Current Liabilities:
Short-term debt	229.0	165.9
Current maturities of long-term debt	1.3	1.3
Accounts payable	333.1	283.1
Accrued expenses	248.7	232.1
Income taxes payable	12.8	31.6
Total current liabilities	824.9	714.0
Long-term debt	365.7	233.2
Post-retirement benefits, other than pensions	2.7	4.6
Pensions	60.6	70.0
Other liabilities	120.9	119.2
Total liabilities	1,374.8	1,141.0
Commitments and contingencies
Total stockholders’ equity	501.7	485.7
Total liabilities and stockholders' equity	1,876.5	1,626.7
Parent [Member]
Current Assets:
Cash and cash equivalents	1.5	1.1	1.5	1.0
Accounts and notes receivable, net	0	0
Inventories, net	0	0
Deferred income taxes, net	0.2	0.9
Other assets	3.4	3.4
Total current assets	5.1	5.4
Property, plant and equipment, net	0	0
Goodwill	0	0
Investments in subsidiaries	1,320.7	1,138.8
Deferred income taxes	1.1	0
Other assets, net	3.4	4.2
Intercompany receivables (payables)	(459.5)	(460.6)
Total assets	870.8	687.8
Current Liabilities:
Short-term debt	0	0
Current maturities of long-term debt	0	0
Accounts payable	14.4	11.8
Accrued expenses	6.7	3.3
Income taxes payable	(1.5)	(30.3)
Total current liabilities	19.6	(15.2)
Long-term debt	349.0	217.0
Post-retirement benefits, other than pensions	0	0
Pensions	0	0
Other liabilities	0.5	0.3
Total liabilities	369.1	202.1
Commitments and contingencies
Total stockholders’ equity	501.7	485.7
Total liabilities and stockholders' equity	870.8	687.8
Guarantor Subsidiaries [Member]
Current Assets:
Cash and cash equivalents	15.1	10.5	15.3	13.4
Accounts and notes receivable, net	11.8	12.8
Inventories, net	372.0	253.6
Deferred income taxes, net	21.2	21.2
Other assets	56.2	38.4
Total current assets	476.3	336.5
Property, plant and equipment, net	257.5	246.4
Goodwill	140.4	140.4
Investments in subsidiaries	344.5	337.5
Deferred income taxes	75.7	76.9
Other assets, net	64.3	64.3
Intercompany receivables (payables)	451.8	434.0
Total assets	1,810.5	1,636.0
Current Liabilities:
Short-term debt	0	0
Current maturities of long-term debt	1.0	1.0
Accounts payable	245.2	187.8
Accrued expenses	176.9	168.4
Income taxes payable	31.9	75.7
Total current liabilities	455.0	432.9
Long-term debt	16.7	15.8
Post-retirement benefits, other than pensions	2.7	4.6
Pensions	51.3	58.4
Other liabilities	120.7	119.4
Total liabilities	646.4	631.1
Commitments and contingencies
Total stockholders’ equity	1,164.1	1,004.9
Total liabilities and stockholders' equity	1,810.5	1,636.0
Non-Guarantor Subsidiaries [Member]
Current Assets:
Cash and cash equivalents	31.5	26.4	21.0	37.4
Accounts and notes receivable, net	489.7	395.3
Inventories, net	134.2	128.4
Deferred income taxes, net	5.6	5.7
Other assets	79.2	70.2
Total current assets	740.2	626.0
Property, plant and equipment, net	93.0	89.1
Goodwill	73.7	76.4
Investments in subsidiaries	(0.5)	(0.6)
Deferred income taxes	18.0	20.2
Other assets, net	23.0	16.4
Intercompany receivables (payables)	7.7	26.6
Total assets	955.1	854.1
Current Liabilities:
Short-term debt	229.0	165.9
Current maturities of long-term debt	0.3	0.3
Accounts payable	73.5	83.5
Accrued expenses	65.1	60.4
Income taxes payable	64.8	49.9
Total current liabilities	432.7	360.0
Long-term debt	0	0.4
Post-retirement benefits, other than pensions	0	0
Pensions	9.3	11.6
Other liabilities	11.5	11.3
Total liabilities	453.5	383.3
Commitments and contingencies
Total stockholders’ equity	501.6	470.8
Total liabilities and stockholders' equity	955.1	854.1
Eliminations [Member]
Current Assets:
Cash and cash equivalents	0	0	0	0
Accounts and notes receivable, net	0	0
Inventories, net	(4.7)	(3.2)
Deferred income taxes, net	(3.2)	(3.3)
Other assets	(77.2)	(59.0)
Total current assets	(85.1)	(65.5)
Property, plant and equipment, net	0	0
Goodwill	0	0
Investments in subsidiaries	(1,664.7)	(1,475.7)
Deferred income taxes	(8.6)	(8.6)
Other assets, net	(1.5)	(1.4)
Intercompany receivables (payables)		0
Total assets	(1,759.9)	(1,551.2)
Current Liabilities:
Short-term debt	0	0
Current maturities of long-term debt	0	0
Accounts payable	0	0
Accrued expenses	0	0
Income taxes payable	(82.4)	(63.7)
Total current liabilities	(82.4)	(63.7)
Long-term debt	0	0
Post-retirement benefits, other than pensions	0	0
Pensions	0	0
Other liabilities	(11.8)	(11.8)
Total liabilities	(94.2)	(75.5)
Commitments and contingencies
Total stockholders’ equity	(1,665.7)	(1,475.7)
Total liabilities and stockholders' equity	$ (1,759.9)	$ (1,551.2)