Guarantor Condensed Consolidating Financial Statements - Balance Sheets (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2014
Current Assets:
Cash and Cash Equivalents	$ 45.7	$ 54.9	$ 81.5	$ 81.6
Receivables, Net	500.9	423.9
Inventories, Net	591.9	557.1
Intercompany	0.0	0.0
Other Current Assets	40.0	30.9
Total Current Assets	1,178.5	1,066.8
Property, Plant and Equipment, Net	1,767.5	1,586.4
Investment in Consolidated Subsidiaries	0.0	0.0
Goodwill	1,265.0	1,167.8
Other Assets	511.1	435.1
Total Assets	4,722.1	4,256.1
Current Liabilities:
Short-Term Debt and Current Portion of Long-Term Debt	64.1	36.6
Accounts Payable	426.8	457.9
Intercompany	0.0	0.0
Other Accrued Liabilities	241.1	237.7
Total Current Liabilities	732.0	732.2
Long-Term Debt	2,190.9	1,838.9
Deferred Income Tax Liabilities	370.5	266.7
Other Noncurrent Liabilities	320.7	316.6
EQUITY
Total Equity	1,108.0	1,101.7
Total Liabilities and Shareholders' Equity	4,722.1	4,256.1
Reportable Legal Entities | Parent
Current Assets:
Cash and Cash Equivalents	0.0	0.0	0.0	0.0
Receivables, Net	0.0	0.0
Inventories, Net	0.0	0.0
Intercompany	0.0	0.0
Other Current Assets	0.0	0.0
Total Current Assets	0.0	0.0
Property, Plant and Equipment, Net	0.0	0.0
Investment in Consolidated Subsidiaries	1,333.2	1,176.8
Goodwill	0.0	0.0
Other Assets	0.0	0.0
Total Assets	1,333.2	1,176.8
Current Liabilities:
Short-Term Debt and Current Portion of Long-Term Debt	0.0	0.0
Accounts Payable	0.0	0.0
Intercompany	225.2	75.1
Other Accrued Liabilities	0.0	0.0
Total Current Liabilities	225.2	75.1
Long-Term Debt	0.0	0.0
Deferred Income Tax Liabilities	0.0	0.0
Other Noncurrent Liabilities	0.0	0.0
EQUITY
Total Equity	1,108.0	1,101.7
Total Liabilities and Shareholders' Equity	1,333.2	1,176.8
Reportable Legal Entities | Subsidiary Issuer
Current Assets:
Cash and Cash Equivalents	6.6	0.1	46.5	2.0
Receivables, Net	219.7	217.0
Inventories, Net	403.2	408.8
Intercompany	1,023.2	656.4
Other Current Assets	26.9	19.2
Total Current Assets	1,679.6	1,301.5
Property, Plant and Equipment, Net	1,434.8	1,358.0
Investment in Consolidated Subsidiaries	0.0	0.0
Goodwill	1,098.9	1,042.8
Other Assets	330.5	334.7
Total Assets	4,543.8	4,037.0
Current Liabilities:
Short-Term Debt and Current Portion of Long-Term Debt	25.3	25.5
Accounts Payable	317.8	342.8
Intercompany	0.0	0.0
Other Accrued Liabilities	171.2	191.8
Total Current Liabilities	514.3	560.1
Long-Term Debt	2,101.7	1,761.4
Deferred Income Tax Liabilities	297.8	249.2
Other Noncurrent Liabilities	296.8	289.5
EQUITY
Total Equity	1,333.2	1,176.8
Total Liabilities and Shareholders' Equity	4,543.8	4,037.0
Reportable Legal Entities | Combined Guarantor Subsidiaries
Current Assets:
Cash and Cash Equivalents	0.6	0.0	0.0	0.0
Receivables, Net	8.5	0.0
Inventories, Net	14.2	0.0
Intercompany	48.6	21.6
Other Current Assets	0.0	6.3
Total Current Assets	71.9	27.9
Property, Plant and Equipment, Net	63.6	0.2
Investment in Consolidated Subsidiaries	14.2	15.2
Goodwill	55.5	0.0
Other Assets	67.3	0.0
Total Assets	272.5	43.3
Current Liabilities:
Short-Term Debt and Current Portion of Long-Term Debt	0.0	0.0
Accounts Payable	4.1	0.0
Intercompany	0.0	0.0
Other Accrued Liabilities	2.6	0.0
Total Current Liabilities	6.7	0.0
Long-Term Debt	0.0	0.0
Deferred Income Tax Liabilities	43.3	0.0
Other Noncurrent Liabilities	0.0	0.0
EQUITY
Total Equity	222.5	43.3
Total Liabilities and Shareholders' Equity	272.5	43.3
Reportable Legal Entities | Combined Nonguarantor Subsidiaries
Current Assets:
Cash and Cash Equivalents	38.5	54.8	35.0	79.6
Receivables, Net	272.7	206.9
Inventories, Net	174.5	148.3
Intercompany	0.0	0.0
Other Current Assets	13.2	5.4
Total Current Assets	498.9	415.4
Property, Plant and Equipment, Net	269.1	228.2
Investment in Consolidated Subsidiaries	0.0	0.0
Goodwill	110.6	125.0
Other Assets	114.0	100.4
Total Assets	992.6	869.0
Current Liabilities:
Short-Term Debt and Current Portion of Long-Term Debt	38.8	11.1
Accounts Payable	104.9	115.1
Intercompany	894.3	808.8
Other Accrued Liabilities	67.4	45.9
Total Current Liabilities	1,105.4	980.9
Long-Term Debt	89.2	77.5
Deferred Income Tax Liabilities	29.4	17.5
Other Noncurrent Liabilities	24.6	27.1
EQUITY
Total Equity	(256.0)	(234.0)
Total Liabilities and Shareholders' Equity	992.6	869.0
Consolidating Eliminations
Current Assets:
Cash and Cash Equivalents	0.0	0.0	$ 0.0	$ 0.0
Receivables, Net	0.0	0.0
Inventories, Net	0.0	0.0
Intercompany	(1,071.8)	(678.0)
Other Current Assets	(0.1)	0.0
Total Current Assets	(1,071.9)	(678.0)
Property, Plant and Equipment, Net	0.0	0.0
Investment in Consolidated Subsidiaries	(1,347.4)	(1,192.0)
Goodwill	0.0	0.0
Other Assets	(0.7)	0.0
Total Assets	(2,420.0)	(1,870.0)
Current Liabilities:
Short-Term Debt and Current Portion of Long-Term Debt	0.0	0.0
Accounts Payable	0.0	0.0
Intercompany	(1,119.5)	(883.9)
Other Accrued Liabilities	(0.1)	0.0
Total Current Liabilities	(1,119.6)	(883.9)
Long-Term Debt	0.0	0.0
Deferred Income Tax Liabilities	0.0	0.0
Other Noncurrent Liabilities	(0.7)	0.0
EQUITY
Total Equity	(1,299.7)	(986.1)
Total Liabilities and Shareholders' Equity	$ (2,420.0)	$ (1,870.0)