Guarantor Condensed Consolidating Financial Statements - Statements of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 37.0	$ 57.5
Non-cash Items Included in Net Income:
Depreciation and Amortization	75.0	70.7
Deferred Income Taxes	11.9	28.9
Amount of Postretirement Expense Less Than Funding	(11.9)	(6.7)
Equity in Net Earnings of Subsidiaries	0.0	0.0
Other, Net	4.1	12.8
Changes in Operating Assets and Liabilities	(87.7)	(104.8)
Net Cash Provided by (Used in) Operating Activities	28.4	58.4
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital Spending	(69.2)	(99.0)
Packaging Machinery Spending	(6.9)	(4.0)
Acquisition of Businesses, Net of Cash Acquired	0.0	(288.5)
Other, Net	(1.2)	(1.4)
Net Cash Provided by (Used in) Investing Activities	(77.3)	(392.9)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchase of Common Stock	(40.1)	(43.5)
Payments on Debt	(6.3)	(6.3)
Borrowings under Revolving Credit Facilities	310.1	552.5
Payments on Revolving Credit Facilities	(206.4)	(122.4)
Dividends Paid	(23.6)	(16.3)
Repurchase of Common Stock related to Share-Based Payments	(10.0)	(10.4)
Other, Net	2.2	(0.3)
Net Cash (Used in) Provided by Financing Activities	25.9	353.3
Effect of Exchange Rate Changes on Cash	1.3	1.9
Net Increase (Decrease) in Cash and Cash Equivalents	(21.7)	20.7
Cash and Cash Equivalents at Beginning of Period	59.1	54.9
CASH AND CASH EQUIVALENTS AT END OF PERIOD	37.4	75.6
Reportable Legal Entities | Parent
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	37.0	57.5
Non-cash Items Included in Net Income:
Depreciation and Amortization	0.0	0.0
Deferred Income Taxes	0.0	0.0
Amount of Postretirement Expense Less Than Funding	0.0	0.0
Equity in Net Earnings of Subsidiaries	(37.0)	(57.5)
Other, Net	0.0	0.0
Changes in Operating Assets and Liabilities	0.0	0.0
Net Cash Provided by (Used in) Operating Activities	0.0	0.0
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital Spending	0.0	0.0
Packaging Machinery Spending	0.0	0.0
Acquisition of Businesses, Net of Cash Acquired		0.0
Other, Net	73.7	70.2
Net Cash Provided by (Used in) Investing Activities	73.7	70.2
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchase of Common Stock	(40.1)	(43.5)
Payments on Debt	0.0	0.0
Borrowings under Revolving Credit Facilities	0.0	0.0
Payments on Revolving Credit Facilities	0.0	0.0
Dividends Paid	(23.6)	(16.3)
Repurchase of Common Stock related to Share-Based Payments	(10.0)	(10.4)
Other, Net	0.0	0.0
Net Cash (Used in) Provided by Financing Activities	(73.7)	(70.2)
Effect of Exchange Rate Changes on Cash	0.0	0.0
Net Increase (Decrease) in Cash and Cash Equivalents	0.0	0.0
Cash and Cash Equivalents at Beginning of Period	0.0	0.0
CASH AND CASH EQUIVALENTS AT END OF PERIOD	0.0	0.0
Reportable Legal Entities | Subsidiary Issuer
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	37.0	57.5
Non-cash Items Included in Net Income:
Depreciation and Amortization	57.6	59.3
Deferred Income Taxes	11.7	29.3
Amount of Postretirement Expense Less Than Funding	(10.3)	(5.4)
Equity in Net Earnings of Subsidiaries	(4.5)	(9.4)
Other, Net	3.0	12.8
Changes in Operating Assets and Liabilities	(55.7)	(113.2)
Net Cash Provided by (Used in) Operating Activities	38.8	30.9
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital Spending	(47.7)	(80.0)
Packaging Machinery Spending	(6.9)	(4.0)
Acquisition of Businesses, Net of Cash Acquired		(205.4)
Other, Net	(1.2)	(84.6)
Net Cash Provided by (Used in) Investing Activities	(55.8)	(374.0)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchase of Common Stock	0.0	0.0
Payments on Debt	(6.3)	(6.3)
Borrowings under Revolving Credit Facilities	298.5	528.9
Payments on Revolving Credit Facilities	(198.5)	(108.6)
Dividends Paid	0.0	0.0
Repurchase of Common Stock related to Share-Based Payments	0.0	0.0
Other, Net	(71.5)	(42.2)
Net Cash (Used in) Provided by Financing Activities	22.2	371.8
Effect of Exchange Rate Changes on Cash	0.0	0.0
Net Increase (Decrease) in Cash and Cash Equivalents	5.2	28.7
Cash and Cash Equivalents at Beginning of Period	0.9	0.1
CASH AND CASH EQUIVALENTS AT END OF PERIOD	6.1	28.8
Reportable Legal Entities | Combined Guarantor Subsidiaries
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	(1.2)	(1.0)
Non-cash Items Included in Net Income:
Depreciation and Amortization	3.6	0.9
Deferred Income Taxes	1.2	1.0
Amount of Postretirement Expense Less Than Funding	0.0	0.0
Equity in Net Earnings of Subsidiaries	3.4	2.6
Other, Net	0.0	0.0
Changes in Operating Assets and Liabilities	(7.3)	4.1
Net Cash Provided by (Used in) Operating Activities	(0.3)	7.6
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital Spending	0.0	0.0
Packaging Machinery Spending	0.0	0.0
Acquisition of Businesses, Net of Cash Acquired		0.0
Other, Net	0.0	0.1
Net Cash Provided by (Used in) Investing Activities	0.0	0.1
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchase of Common Stock	0.0	0.0
Payments on Debt	0.0	0.0
Borrowings under Revolving Credit Facilities	0.0	0.0
Payments on Revolving Credit Facilities	0.0	0.0
Dividends Paid	0.0	0.0
Repurchase of Common Stock related to Share-Based Payments	0.0	0.0
Other, Net	0.0	0.0
Net Cash (Used in) Provided by Financing Activities	0.0	0.0
Effect of Exchange Rate Changes on Cash	0.0	0.0
Net Increase (Decrease) in Cash and Cash Equivalents	(0.3)	7.7
Cash and Cash Equivalents at Beginning of Period	1.2	0.0
CASH AND CASH EQUIVALENTS AT END OF PERIOD	0.9	7.7
Reportable Legal Entities | Combined Nonguarantor Subsidiaries
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	2.3	7.8
Non-cash Items Included in Net Income:
Depreciation and Amortization	13.8	10.5
Deferred Income Taxes	(1.0)	(1.4)
Amount of Postretirement Expense Less Than Funding	(1.6)	(1.3)
Equity in Net Earnings of Subsidiaries	0.0	0.0
Other, Net	1.1	0.0
Changes in Operating Assets and Liabilities	(24.7)	4.3
Net Cash Provided by (Used in) Operating Activities	(10.1)	19.9
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital Spending	(21.5)	(19.0)
Packaging Machinery Spending	0.0	0.0
Acquisition of Businesses, Net of Cash Acquired		(83.1)
Other, Net	0.0	0.0
Net Cash Provided by (Used in) Investing Activities	(21.5)	(102.1)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchase of Common Stock	0.0	0.0
Payments on Debt	0.0	0.0
Borrowings under Revolving Credit Facilities	11.6	23.6
Payments on Revolving Credit Facilities	(7.9)	(13.8)
Dividends Paid	0.0	0.0
Repurchase of Common Stock related to Share-Based Payments	0.0	0.0
Other, Net	0.0	54.8
Net Cash (Used in) Provided by Financing Activities	3.7	64.6
Effect of Exchange Rate Changes on Cash	1.3	1.9
Net Increase (Decrease) in Cash and Cash Equivalents	(26.6)	(15.7)
Cash and Cash Equivalents at Beginning of Period	57.0	54.8
CASH AND CASH EQUIVALENTS AT END OF PERIOD	30.4	39.1
Consolidating Eliminations
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	(38.1)	(64.3)
Non-cash Items Included in Net Income:
Depreciation and Amortization	0.0	0.0
Deferred Income Taxes	0.0	0.0
Amount of Postretirement Expense Less Than Funding	0.0	0.0
Equity in Net Earnings of Subsidiaries	38.1	64.3
Other, Net	0.0	0.0
Changes in Operating Assets and Liabilities	0.0	0.0
Net Cash Provided by (Used in) Operating Activities	0.0	0.0
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital Spending	0.0	0.0
Packaging Machinery Spending	0.0	0.0
Acquisition of Businesses, Net of Cash Acquired		0.0
Other, Net	(73.7)	12.9
Net Cash Provided by (Used in) Investing Activities	(73.7)	12.9
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchase of Common Stock	0.0	0.0
Payments on Debt	0.0	0.0
Borrowings under Revolving Credit Facilities	0.0	0.0
Payments on Revolving Credit Facilities	0.0	0.0
Dividends Paid	0.0	0.0
Repurchase of Common Stock related to Share-Based Payments	0.0	0.0
Other, Net	73.7	(12.9)
Net Cash (Used in) Provided by Financing Activities	73.7	(12.9)
Effect of Exchange Rate Changes on Cash	0.0	0.0
Net Increase (Decrease) in Cash and Cash Equivalents	0.0	0.0
Cash and Cash Equivalents at Beginning of Period	0.0	0.0
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 0.0	$ 0.0