Guarantor Condensed Consolidating Financial Statements - Statements of Operations (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Condensed Financial Statements, Captions [Line Items]
Parent's ownership percentage	100.00%
Net Sales	$ 1,061.5	$ 1,034.0
Cost of Sales	886.5	826.3
Selling, General and Administrative	91.1	89.1
Other (Income) Expense, Net	(0.2)	0.9
Business Combinations and Other Special Charges	8.6	10.5
Income from Operations	75.5	107.2
Interest Expense, Net	(21.3)	(16.9)
Income before Income Taxes and Equity Income of Unconsolidated Entity	54.2	90.3
Income Tax (Expense) Benefit	(17.6)	(33.2)
Income before Equity Income of Unconsolidated Entities	36.6	57.1
Equity Income of Unconsolidated Entity	0.4	0.4
Equity in Net Earnings of Subsidiaries	0.0	0.0
Net Income (Loss)	37.0	57.5
Comprehensive Income (Loss)	54.7	64.1
Reportable Legal Entities | Parent
Condensed Financial Statements, Captions [Line Items]
Net Sales	0.0	0.0
Cost of Sales	0.0	0.0
Selling, General and Administrative	0.0	0.0
Other (Income) Expense, Net	0.0	0.0
Business Combinations and Other Special Charges	0.0	0.0
Income from Operations	0.0	0.0
Interest Expense, Net	0.0	0.0
Income before Income Taxes and Equity Income of Unconsolidated Entity	0.0	0.0
Income Tax (Expense) Benefit	0.0	0.0
Income before Equity Income of Unconsolidated Entities	0.0	0.0
Equity Income of Unconsolidated Entity	0.0	0.0
Equity in Net Earnings of Subsidiaries	37.0	57.5
Net Income (Loss)	37.0	57.5
Comprehensive Income (Loss)	54.7	64.1
Reportable Legal Entities | Subsidiary Issuer
Condensed Financial Statements, Captions [Line Items]
Net Sales	845.2	866.0
Cost of Sales	705.4	691.4
Selling, General and Administrative	68.9	70.1
Other (Income) Expense, Net	(2.7)	(1.6)
Business Combinations and Other Special Charges	5.8	10.5
Income from Operations	67.8	95.6
Interest Expense, Net	(20.4)	(15.9)
Income before Income Taxes and Equity Income of Unconsolidated Entity	47.4	79.7
Income Tax (Expense) Benefit	(14.9)	(31.6)
Income before Equity Income of Unconsolidated Entities	32.5	48.1
Equity Income of Unconsolidated Entity	0.0	0.0
Equity in Net Earnings of Subsidiaries	4.5	9.4
Net Income (Loss)	37.0	57.5
Comprehensive Income (Loss)	54.7	64.1
Reportable Legal Entities | Combined Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net Sales	37.0	16.1
Cost of Sales	30.8	12.7
Selling, General and Administrative	2.7	0.7
Other (Income) Expense, Net	0.1	0.0
Business Combinations and Other Special Charges	0.0	0.0
Income from Operations	3.4	2.7
Interest Expense, Net	0.0	0.0
Income before Income Taxes and Equity Income of Unconsolidated Entity	3.4	2.7
Income Tax (Expense) Benefit	(1.2)	(1.1)
Income before Equity Income of Unconsolidated Entities	2.2	1.6
Equity Income of Unconsolidated Entity	0.0	0.0
Equity in Net Earnings of Subsidiaries	(3.4)	(2.6)
Net Income (Loss)	(1.2)	(1.0)
Comprehensive Income (Loss)	21.2	(1.0)
Reportable Legal Entities | Combined Nonguarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net Sales	262.6	231.3
Cost of Sales	233.6	201.6
Selling, General and Administrative	19.5	18.3
Other (Income) Expense, Net	2.4	2.5
Business Combinations and Other Special Charges	2.8	0.0
Income from Operations	4.3	8.9
Interest Expense, Net	(0.9)	(1.0)
Income before Income Taxes and Equity Income of Unconsolidated Entity	3.4	7.9
Income Tax (Expense) Benefit	(1.5)	(0.5)
Income before Equity Income of Unconsolidated Entities	1.9	7.4
Equity Income of Unconsolidated Entity	0.4	0.4
Equity in Net Earnings of Subsidiaries	0.0	0.0
Net Income (Loss)	2.3	7.8
Comprehensive Income (Loss)	20.8	13.0
Consolidating Eliminations
Condensed Financial Statements, Captions [Line Items]
Net Sales	(83.3)	(79.4)
Cost of Sales	(83.3)	(79.4)
Selling, General and Administrative	0.0	0.0
Other (Income) Expense, Net	0.0	0.0
Business Combinations and Other Special Charges	0.0	0.0
Income from Operations	0.0	0.0
Interest Expense, Net	0.0	0.0
Income before Income Taxes and Equity Income of Unconsolidated Entity	0.0	0.0
Income Tax (Expense) Benefit	0.0	0.0
Income before Equity Income of Unconsolidated Entities	0.0	0.0
Equity Income of Unconsolidated Entity	0.0	0.0
Equity in Net Earnings of Subsidiaries	(38.1)	(64.3)
Net Income (Loss)	(38.1)	(64.3)
Comprehensive Income (Loss)	$ (96.7)	$ (76.1)