Condensed Consolidating Financial Statements (Balance Sheets) (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 48.8	$ 50.2	$ 40.6	$ 38.9
Accounts and notes receivable, net	513.4	469.8
Inventories, net	522.8	418.5
Other assets	101.4	67.4
Total current assets	1,186.4	1,005.9
Property, plant and equipment, net	365.6	361.4
Goodwill	197.6	195.1
Investment in subsidiaries	0.0	0.0
Deferred income taxes	134.0	136.7
Other assets, net	67.0	61.2
Intercompany receivables (payables), net	0.0	0.0
Total assets	1,950.6	1,760.3
Current Liabilities:
Short-term debt	201.6	52.4
Current maturities of long-term debt	207.6	200.1
Accounts payable	401.0	361.2
Accrued expenses	224.8	265.9
Income taxes payable	2.5	9.0
Total current liabilities	1,037.5	888.6
Long-term debt	693.9	615.7
Post-retirement benefits, other than pensions	2.4	2.8
Pensions	88.3	87.5
Other liabilities	129.5	127.7
Total liabilities	1,951.6	1,722.3
Commitments and contingencies
Total stockholders' equity	(1.0)	38.0
Total liabilities and stockholders' equity	1,950.6	1,760.3
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	(11.3)	(5.1)
Other assets	(55.0)	(61.7)
Total current assets	(66.3)	(66.8)
Property, plant and equipment, net	(4.7)	0.0
Goodwill	0.0	0.0
Investment in subsidiaries	(1,388.4)	(1,691.1)
Deferred income taxes	(14.7)	(14.7)
Other assets, net	(1.5)	(1.4)
Intercompany receivables (payables), net	(73.2)	(73.2)
Total assets	(1,548.8)	(1,847.2)
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	(80.2)	(79.3)
Total current liabilities	(80.2)	(79.3)
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)	(2.5)
Total liabilities	(82.7)	(81.8)
Commitments and contingencies
Total stockholders' equity	(1,466.1)	(1,765.4)
Total liabilities and stockholders' equity	(1,548.8)	(1,847.2)
Parent [Member]
Current Assets:
Cash and cash equivalents	1.5	1.2	1.0	0.5
Accounts and notes receivable, net	0.0	0.0
Inventories, net	0.0	0.0
Other assets	16.1	12.8
Total current assets	17.6	14.0
Property, plant and equipment, net	0.0	0.0
Goodwill	0.0	0.0
Investment in subsidiaries	961.7	1,166.9
Deferred income taxes	8.1	6.8
Other assets, net	2.4	3.6
Intercompany receivables (payables), net	(62.1)	(382.4)
Total assets	927.7	808.9
Current Liabilities:
Short-term debt	0.0	0.0
Current maturities of long-term debt	206.9	199.3
Accounts payable	18.4	18.5
Accrued expenses	11.0	6.3
Income taxes payable	12.3	(54.0)
Total current liabilities	248.6	170.1
Long-term debt	679.2	600.9
Post-retirement benefits, other than pensions	0.0	0.0
Pensions	0.0	0.0
Other liabilities	0.9	0.0
Total liabilities	928.7	771.0
Commitments and contingencies
Total stockholders' equity	(1.0)	37.9
Total liabilities and stockholders' equity	927.7	808.9
Guarantor Subsidiaries [Member]
Current Assets:
Cash and cash equivalents	14.0	17.1	15.2	7.8
Accounts and notes receivable, net	45.4	30.6
Inventories, net	406.8	314.7
Other assets	50.9	48.8
Total current assets	517.1	411.2
Property, plant and equipment, net	238.9	237.6
Goodwill	134.9	134.9
Investment in subsidiaries	427.3	524.7
Deferred income taxes	109.3	113.5
Other assets, net	41.2	40.0
Intercompany receivables (payables), net	62.4	375.2
Total assets	1,531.1	1,837.1
Current Liabilities:
Short-term debt	0.0	0.0
Current maturities of long-term debt	0.4	0.4
Accounts payable	270.8	248.5
Accrued expenses	163.4	206.3
Income taxes payable	5.5	89.8
Total current liabilities	440.1	545.0
Long-term debt	14.4	14.5
Post-retirement benefits, other than pensions	2.4	2.8
Pensions	76.4	75.5
Other liabilities	120.2	119.1
Total liabilities	653.5	756.9
Commitments and contingencies
Total stockholders' equity	877.6	1,080.2
Total liabilities and stockholders' equity	1,531.1	1,837.1
Non-Guarantor Subsidiaries [Member]
Current Assets:
Cash and cash equivalents	33.3	31.9	$ 24.4	$ 30.6
Accounts and notes receivable, net	468.0	439.2
Inventories, net	127.3	108.9
Other assets	89.4	67.5
Total current assets	718.0	647.5
Property, plant and equipment, net	131.4	123.8
Goodwill	62.7	60.2
Investment in subsidiaries	(0.6)	(0.5)
Deferred income taxes	31.3	31.1
Other assets, net	24.9	19.0
Intercompany receivables (payables), net	72.9	80.4
Total assets	1,040.6	961.5
Current Liabilities:
Short-term debt	201.6	52.4
Current maturities of long-term debt	0.3	0.4
Accounts payable	111.8	94.2
Accrued expenses	50.4	53.3
Income taxes payable	64.9	52.5
Total current liabilities	429.0	252.8
Long-term debt	0.3	0.3
Post-retirement benefits, other than pensions	0.0	0.0
Pensions	11.9	12.0
Other liabilities	10.9	11.1
Total liabilities	452.1	276.2
Commitments and contingencies
Total stockholders' equity	588.5	685.3
Total liabilities and stockholders' equity	$ 1,040.6	$ 961.5