Supplemental Guarantor Condensed Financial Information (Condensed Balance Sheets) (Details) - USD ($) $ in Millions	Mar. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 53.5	$ 84.7
Receivables, net of allowances	811.9	714.2
Inventories	728.7	736.1
Prepaid expenses and other	61.5	60.0
Total current assets	1,655.6	1,595.0
Property, plant and equipment, net	526.1	530.3
Deferred income taxes	7.2	7.9
Intercompany accounts	0.0	0.0
Investment in subsidiaries	0.0	0.0
Goodwill	11.0	11.0
Intangible assets, net	22.1	23.3
Unconsolidated affiliated companies	0.2	0.2
Other non-current assets	58.1	67.6
Total assets	2,280.3	2,235.3
Current liabilities:
Accounts payable	444.9	437.5
Accrued liabilities	254.5	308.8
Current portion of long-term debt	33.9	46.9
Total current liabilities	733.3	793.2
Long-term debt	1,135.5	1,038.8
Deferred income taxes	114.4	108.6
Intercompany accounts	0.0	0.0
Other liabilities	163.8	162.9
Total liabilities	2,147.0	2,103.5
Total Company shareholders’ equity	130.6	129.2
Noncontrolling interest	2.7	2.6
Total liabilities and equity	2,280.3	2,235.3
Reportable Legal Entities | Parent
Current assets:
Cash and cash equivalents	0.0	0.0
Receivables, net of allowances	0.0	0.0
Inventories	0.0	0.0
Prepaid expenses and other	0.0	0.0
Total current assets	0.0	0.0
Property, plant and equipment, net	0.3	0.3
Deferred income taxes	0.0	0.0
Intercompany accounts	1,017.1	1,022.7
Investment in subsidiaries	24.2	19.4
Goodwill	0.0	0.0
Intangible assets, net	0.1	0.1
Unconsolidated affiliated companies	0.0	0.0
Other non-current assets	0.0	0.0
Total assets	1,041.7	1,042.5
Current liabilities:
Accounts payable	0.0	0.0
Accrued liabilities	11.3	15.6
Current portion of long-term debt	0.0	0.0
Total current liabilities	11.3	15.6
Long-term debt	777.3	776.3
Deferred income taxes	122.5	121.4
Intercompany accounts	0.0	0.0
Other liabilities	0.0	0.0
Total liabilities	911.1	913.3
Total Company shareholders’ equity	130.6	129.2
Noncontrolling interest	0.0	0.0
Total liabilities and equity	1,041.7	1,042.5
Reportable Legal Entities | Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	0.0	0.0
Receivables, net of allowances	283.8	226.2
Inventories	351.6	380.2
Prepaid expenses and other	30.2	27.0
Total current assets	665.6	633.4
Property, plant and equipment, net	204.9	209.3
Deferred income taxes	21.9	26.1
Intercompany accounts	123.4	114.8
Investment in subsidiaries	593.7	581.1
Goodwill	5.6	5.6
Intangible assets, net	5.1	5.6
Unconsolidated affiliated companies	0.0	0.0
Other non-current assets	16.9	17.3
Total assets	1,637.1	1,593.2
Current liabilities:
Accounts payable	134.1	118.1
Accrued liabilities	69.3	88.6
Current portion of long-term debt	0.0	0.0
Total current liabilities	203.4	206.7
Long-term debt	267.7	219.9
Deferred income taxes	0.0	0.0
Intercompany accounts	1,087.0	1,092.3
Other liabilities	54.8	54.9
Total liabilities	1,612.9	1,573.8
Total Company shareholders’ equity	24.2	19.4
Noncontrolling interest	0.0	0.0
Total liabilities and equity	1,637.1	1,593.2
Reportable Legal Entities | Non-Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	53.5	84.7
Receivables, net of allowances	528.1	488.0
Inventories	377.1	355.9
Prepaid expenses and other	31.3	33.0
Total current assets	990.0	961.6
Property, plant and equipment, net	320.9	320.7
Deferred income taxes	7.2	7.9
Intercompany accounts	70.9	70.3
Investment in subsidiaries	0.0	0.0
Goodwill	5.4	5.4
Intangible assets, net	16.9	17.6
Unconsolidated affiliated companies	0.2	0.2
Other non-current assets	41.2	50.3
Total assets	1,452.7	1,434.0
Current liabilities:
Accounts payable	310.8	319.4
Accrued liabilities	173.9	204.6
Current portion of long-term debt	33.9	46.9
Total current liabilities	518.6	570.9
Long-term debt	90.5	42.6
Deferred income taxes	13.8	13.3
Intercompany accounts	124.4	115.5
Other liabilities	109.0	108.0
Total liabilities	856.3	850.3
Total Company shareholders’ equity	593.7	581.1
Noncontrolling interest	2.7	2.6
Total liabilities and equity	1,452.7	1,434.0
Eliminations
Current assets:
Cash and cash equivalents	0.0	0.0
Receivables, net of allowances	0.0	0.0
Inventories	0.0	0.0
Prepaid expenses and other	0.0	0.0
Total current assets	0.0	0.0
Property, plant and equipment, net	0.0	0.0
Deferred income taxes	(21.9)	(26.1)
Intercompany accounts	(1,211.4)	(1,207.8)
Investment in subsidiaries	(617.9)	(600.5)
Goodwill	0.0	0.0
Intangible assets, net	0.0	0.0
Unconsolidated affiliated companies	0.0	0.0
Other non-current assets	0.0	0.0
Total assets	(1,851.2)	(1,834.4)
Current liabilities:
Accounts payable	0.0	0.0
Accrued liabilities	0.0	0.0
Current portion of long-term debt	0.0	0.0
Total current liabilities	0.0	0.0
Long-term debt	0.0	0.0
Deferred income taxes	(21.9)	(26.1)
Intercompany accounts	(1,211.4)	(1,207.8)
Other liabilities	0.0	0.0
Total liabilities	(1,233.3)	(1,233.9)
Total Company shareholders’ equity	(617.9)	(600.5)
Noncontrolling interest	0.0	0.0
Total liabilities and equity	$ (1,851.2)	$ (1,834.4)