Supplemental Guarantor Condensed Financial Information (Condensed Balance Sheets) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016	Jul. 01, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 96.6	$ 101.1	$ 105.9	$ 112.4
Receivables, net of allowances	697.9	664.5
Inventories	770.8	768.2
Prepaid expenses and other	76.6	65.4
Total current assets	1,641.9	1,599.2
Property, plant and equipment, net	536.6	529.3
Deferred income taxes	10.5	20.4
Intercompany accounts	0.0	0.0
Investment in subsidiaries	0.0	0.0
Goodwill	12.2	12.0
Intangible assets, net	26.1	28.3
Unconsolidated affiliated companies	0.2	9.0
Other non-current assets	49.5	43.4
Total assets	2,277.0	2,241.6
Current liabilities:
Accounts payable	431.1	414.0
Accrued liabilities	337.9	419.6
Current portion of long-term debt	49.0	67.5
Total current liabilities	818.0	901.1
Long-term debt	1,034.0	871.1
Deferred income taxes	131.1	126.7
Intercompany accounts	0.0	0.0
Other liabilities	170.9	173.8
Total liabilities	2,154.0	2,072.7
Total Company shareholders’ equity	120.2	153.1
Noncontrolling interest	2.8	15.8
Total liabilities and equity	2,277.0	2,241.6
Eliminations
Current assets:
Cash and cash equivalents	0.0	0.0	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	(44.9)	(42.9)
Intercompany accounts	(1,219.1)	(1,266.5)
Investment in subsidiaries	(673.6)	(685.9)
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	(1,937.6)	(1,995.3)
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	(44.9)	(42.9)
Intercompany accounts	(1,219.1)	(1,266.5)
Other liabilities	0.0	0.0
Total liabilities	(1,264.0)	(1,309.4)
Total Company shareholders’ equity	(673.6)	(685.9)
Noncontrolling interest	0.0	0.0
Total liabilities and equity	(1,937.6)	(1,995.3)
Parent
Current assets:
Cash and cash equivalents	0.0	0.0	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	1,033.0	1,092.4
Investment in subsidiaries	62.3	73.2
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	1,095.6	1,165.9
Current liabilities:
Accounts payable	0.0	0.0
Accrued liabilities	41.0	93.4
Current portion of long-term debt	0.0	0.0
Total current liabilities	41.0	93.4
Long-term debt	774.2	772.3
Deferred income taxes	160.0	147.1
Intercompany accounts	0.0	0.0
Other liabilities	0.2	0.0
Total liabilities	975.4	1,012.8
Total Company shareholders’ equity	120.2	153.1
Noncontrolling interest	0.0	0.0
Total liabilities and equity	1,095.6	1,165.9
Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	6.9	1.0	1.5	0.8
Receivables, net of allowances	248.0	202.9
Inventories	391.7	363.4
Prepaid expenses and other	25.1	26.2
Total current assets	671.7	593.5
Property, plant and equipment, net	209.0	202.8
Deferred income taxes	44.9	42.9
Intercompany accounts	112.3	104.7
Investment in subsidiaries	611.3	612.7
Goodwill	5.6	5.6
Intangible assets, net	6.4	6.0
Unconsolidated affiliated companies	0.0	8.8
Other non-current assets	18.0	15.5
Total assets	1,679.2	1,592.5
Current liabilities:
Accounts payable	140.6	112.4
Accrued liabilities	86.0	105.0
Current portion of long-term debt	0.0	0.0
Total current liabilities	226.6	217.4
Long-term debt	222.1	75.9
Deferred income taxes	0.0	0.0
Intercompany accounts	1,105.9	1,161.1
Other liabilities	62.3	64.9
Total liabilities	1,616.9	1,519.3
Total Company shareholders’ equity	62.3	73.2
Noncontrolling interest	0.0	0.0
Total liabilities and equity	1,679.2	1,592.5
Non-Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	89.7	100.1	$ 104.4	$ 111.6
Receivables, net of allowances	449.9	461.6
Inventories	379.1	404.8
Prepaid expenses and other	51.5	39.2
Total current assets	970.2	1,005.7
Property, plant and equipment, net	327.3	326.2
Deferred income taxes	10.5	20.4
Intercompany accounts	73.8	69.4
Investment in subsidiaries	0.0	0.0
Goodwill	6.6	6.4
Intangible assets, net	19.7	22.3
Unconsolidated affiliated companies	0.2	0.2
Other non-current assets	31.5	27.9
Total assets	1,439.8	1,478.5
Current liabilities:
Accounts payable	290.5	301.6
Accrued liabilities	210.9	221.2
Current portion of long-term debt	49.0	67.5
Total current liabilities	550.4	590.3
Long-term debt	37.7	22.9
Deferred income taxes	16.0	22.5
Intercompany accounts	113.2	105.4
Other liabilities	108.4	108.9
Total liabilities	825.7	850.0
Total Company shareholders’ equity	611.3	612.7
Noncontrolling interest	2.8	15.8
Total liabilities and equity	$ 1,439.8	$ 1,478.5