Guarantor Condensed Consolidating Financial Statements - Balance Sheets (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Current Assets:
Cash and Cash Equivalents	$ 75.6	$ 54.9	$ 43.4	$ 81.6
Receivables, Net	474.0	423.9
Inventories, Net	599.4	557.1
Intercompany	0.0	0.0
Other Current Assets	41.2	30.9
Total Current Assets	1,190.2	1,066.8
Property, Plant and Equipment, Net	1,689.5	1,586.4
Investment in Consolidated Subsidiaries	0.0	0.0
Goodwill	1,280.0	1,167.8
Other Assets	531.3	435.1
Total Assets	4,691.0	4,256.1
Current Liabilities:
Short-Term Debt and Current Portion of Long-Term Debt	33.3	36.6
Accounts Payable	406.5	457.9
Interest Payable	16.6	9.2
Intercompany	0.0	0.0
Other Accrued Liabilities	231.0	228.5
Total Current Liabilities	670.8	732.2
Long-Term Debt	2,267.7	1,838.9
Deferred Income Tax Liabilities	338.0	266.7
Other Noncurrent Liabilities	314.8	316.6
EQUITY
Total Equity	1,099.7	1,101.7
Total Liabilities and Shareholders' Equity	4,691.0	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	1,240.9	1,176.8
Goodwill	0.0	0.0
Other Assets	0.0	0.0
Total Assets	1,240.9	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
Interest Payable		0.0
Intercompany	141.2	75.1
Other Accrued Liabilities	0.0	0.0
Total Current Liabilities	141.2	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	1,099.7	1,101.7
Total Liabilities and Shareholders' Equity	1,240.9	1,176.8
Reportable Legal Entities | Subsidiary Issuer
Current Assets:
Cash and Cash Equivalents	28.8	0.1	(1.7)	2.0
Receivables, Net	239.7	217.0
Inventories, Net	423.0	408.8
Intercompany	887.3	656.4
Other Current Assets	26.3	19.2
Total Current Assets	1,605.1	1,301.5
Property, Plant and Equipment, Net	1,417.2	1,358.0
Investment in Consolidated Subsidiaries	0.0	0.0
Goodwill	1,101.5	1,042.8
Other Assets	361.7	334.7
Total Assets	4,485.5	4,037.0
Current Liabilities:
Short-Term Debt and Current Portion of Long-Term Debt	25.3	25.5
Accounts Payable	301.3	342.8
Interest Payable		9.2
Intercompany	0.0	0.0
Other Accrued Liabilities	183.2	182.6
Total Current Liabilities	509.8	560.1
Long-Term Debt	2,176.1	1,761.4
Deferred Income Tax Liabilities	278.5	249.2
Other Noncurrent Liabilities	280.2	289.5
EQUITY
Total Equity	1,240.9	1,176.8
Total Liabilities and Shareholders' Equity	4,485.5	4,037.0
Reportable Legal Entities | Combined Guarantor Subsidiaries
Current Assets:
Cash and Cash Equivalents	7.7	0.0	2.6	0.0
Receivables, Net	7.2	0.0
Inventories, Net	12.9	0.0
Intercompany	36.6	21.6
Other Current Assets	0.1	6.3
Total Current Assets	64.5	27.9
Property, Plant and Equipment, Net	54.0	0.2
Investment in Consolidated Subsidiaries	15.3	15.2
Goodwill	70.1	0.0
Other Assets	64.0	0.0
Total Assets	267.9	43.3
Current Liabilities:
Short-Term Debt and Current Portion of Long-Term Debt	0.0	0.0
Accounts Payable	4.9	0.0
Interest Payable		0.0
Intercompany	0.1	0.0
Other Accrued Liabilities	1.7	0.0
Total Current Liabilities	6.7	0.0
Long-Term Debt	0.0	0.0
Deferred Income Tax Liabilities	31.7	0.0
Other Noncurrent Liabilities	7.5	0.0
EQUITY
Total Equity	222.0	43.3
Total Liabilities and Shareholders' Equity	267.9	43.3
Reportable Legal Entities | Combined Nonguarantor Subsidiaries
Current Assets:
Cash and Cash Equivalents	39.1	54.8	42.5	79.6
Receivables, Net	227.1	206.9
Inventories, Net	163.5	148.3
Intercompany	0.0	0.0
Other Current Assets	14.8	5.4
Total Current Assets	444.5	415.4
Property, Plant and Equipment, Net	218.3	228.2
Investment in Consolidated Subsidiaries	0.0	0.0
Goodwill	108.4	125.0
Other Assets	105.6	100.4
Total Assets	876.8	869.0
Current Liabilities:
Short-Term Debt and Current Portion of Long-Term Debt	8.0	11.1
Accounts Payable	100.3	115.1
Interest Payable		0.0
Intercompany	796.9	808.8
Other Accrued Liabilities	46.1	45.9
Total Current Liabilities	951.3	980.9
Long-Term Debt	91.6	77.5
Deferred Income Tax Liabilities	27.8	17.5
Other Noncurrent Liabilities	27.1	27.1
EQUITY
Total Equity	(221.0)	(234.0)
Total Liabilities and Shareholders' Equity	876.8	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	(923.9)	(678.0)
Other Current Assets	0.0	0.0
Total Current Assets	(923.9)	(678.0)
Property, Plant and Equipment, Net	0.0	0.0
Investment in Consolidated Subsidiaries	(1,256.2)	(1,192.0)
Goodwill	0.0	0.0
Other Assets	0.0	0.0
Total Assets	(2,180.1)	(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
Interest Payable		0.0
Intercompany	(938.2)	(883.9)
Other Accrued Liabilities	0.0	0.0
Total Current Liabilities	(938.2)	(883.9)
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	(1,241.9)	(986.1)
Total Liabilities and Shareholders' Equity	$ (2,180.1)	$ (1,870.0)