Guarantor Condensed Consolidating Financial Statements - Statements of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 77.8	$ 57.6	$ 135.3	$ 112.7
Non-cash Items Included in Net Income:
Depreciation and Amortization	75.2	71.2	145.9	139.3
Deferred Income Taxes			31.8	61.7
Amount of Postretirement Expense Greater (Less) Than Funding			(2.1)	(13.6)
Equity in Net Income (Loss) of Subsidiaries	0.0	0.0	0.0	0.0
Other, Net			24.2	16.0
Changes in Operating Assets and Liabilities			(88.1)	(138.8)
Net Cash Provided by Operating Activities			247.0	177.3
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital Spending			(179.4)	(120.1)
Packaging Machinery Spending			(6.6)	(6.9)
Acquisition of Businesses, Net of Cash Acquired			(328.9)	(113.6)
Other, Net			(2.8)	4.7
Net Cash Provided by (Used in) Investing Activities			(517.7)	(235.9)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchase of Common Stock			(79.7)	(8.0)
Payments on Debt			(12.5)	(12.5)
Borrowings under Revolving Credit Facilities			843.3	596.4
Payments on Revolving Credit Facilities			(454.5)	(511.3)
Dividends Paid			(32.4)	(16.4)
Repurchase of Common Stock related to Share-Based Payments			(10.4)	(21.1)
Other, Net			(0.3)	(0.4)
Net Cash (Used in) Provided by Financing Activities			253.5	26.7
Effect of Exchange Rate Changes on Cash			1.0	(2.9)
Net (Decrease) Increase in Cash and Cash Equivalents			(16.2)	(34.8)
Cash and Cash Equivalents at Beginning of Period			54.9	81.6
CASH AND CASH EQUIVALENTS AT END OF PERIOD	38.7	46.8	38.7	46.8
Reportable Legal Entities | Parent
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	77.8	57.6	135.3	112.7
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 Greater (Less) Than Funding			0.0	0.0
Equity in Net Income (Loss) of Subsidiaries	(77.8)	(57.6)	(135.3)	(112.7)
Other, Net			0.0	0.0
Changes in Operating Assets and Liabilities			0.0	0.0
Net Cash Provided by 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	0.0
Other, Net			122.5	45.5
Net Cash Provided by (Used in) Investing Activities			122.5	45.5
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchase of Common Stock			(79.7)	(8.0)
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			(32.4)	(16.4)
Repurchase of Common Stock related to Share-Based Payments			(10.4)	(21.1)
Other, Net			0.0	0.0
Net Cash (Used in) Provided by Financing Activities			(122.5)	(45.5)
Effect of Exchange Rate Changes on Cash			0.0	0.0
Net (Decrease) Increase 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	0.0	0.0
Reportable Legal Entities | Subsidiary Issuer
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	77.8	57.6	135.3	112.7
Non-cash Items Included in Net Income:
Depreciation and Amortization			117.0	115.2
Deferred Income Taxes			29.6	54.4
Amount of Postretirement Expense Greater (Less) Than Funding			0.7	(8.8)
Equity in Net Income (Loss) of Subsidiaries	(7.4)	(8.3)	(16.8)	(15.7)
Other, Net			25.0	17.3
Changes in Operating Assets and Liabilities			(51.0)	(208.3)
Net Cash Provided by Operating Activities			239.8	66.8
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital Spending			(147.6)	(97.8)
Packaging Machinery Spending			(6.6)	(6.9)
Acquisition of Businesses, Net of Cash Acquired			(169.5)	0.0
Other, Net			(163.4)	1.8
Net Cash Provided by (Used in) Investing Activities			(487.1)	(102.9)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchase of Common Stock			0.0	0.0
Payments on Debt			(12.5)	(12.5)
Borrowings under Revolving Credit Facilities			799.7	591.4
Payments on Revolving Credit Facilities			(417.2)	(487.6)
Dividends Paid			0.0	0.0
Repurchase of Common Stock related to Share-Based Payments			0.0	0.0
Other, Net			(122.8)	(45.9)
Net Cash (Used in) Provided by Financing Activities			247.2	45.4
Effect of Exchange Rate Changes on Cash			0.0	0.0
Net (Decrease) Increase in Cash and Cash Equivalents			(0.1)	9.3
Cash and Cash Equivalents at Beginning of Period			0.1	2.0
CASH AND CASH EQUIVALENTS AT END OF PERIOD	0.0	11.3	0.0	11.3
Reportable Legal Entities | Combined Guarantor Subsidiaries
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	(0.5)	0.3	(1.5)	0.5
Non-cash Items Included in Net Income:
Depreciation and Amortization			5.3	1.0
Deferred Income Taxes			1.6	(0.6)
Amount of Postretirement Expense Greater (Less) Than Funding			0.0	0.0
Equity in Net Income (Loss) of Subsidiaries	0.9	0.7	3.5	(1.0)
Other, Net			0.0	0.0
Changes in Operating Assets and Liabilities			(5.3)	0.3
Net Cash Provided by Operating Activities			3.6	0.2
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital Spending			0.0	(0.2)
Packaging Machinery Spending			0.0	0.0
Acquisition of Businesses, Net of Cash Acquired				0.0
Other, Net			0.0	0.0
Net Cash Provided by (Used in) Investing Activities			0.0	(0.2)
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 (Decrease) Increase in Cash and Cash Equivalents			3.6	0.0
Cash and Cash Equivalents at Beginning of Period			0.0	0.0
CASH AND CASH EQUIVALENTS AT END OF PERIOD	3.6	0.0	3.6	0.0
Reportable Legal Entities | Combined Nonguarantor Subsidiaries
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	7.0	7.3	14.8	16.2
Non-cash Items Included in Net Income:
Depreciation and Amortization			23.6	23.1
Deferred Income Taxes			0.6	7.9
Amount of Postretirement Expense Greater (Less) Than Funding			(2.8)	(4.8)
Equity in Net Income (Loss) of Subsidiaries	0.0	0.0	0.0	0.0
Other, Net			(0.8)	(1.3)
Changes in Operating Assets and Liabilities			(31.8)	69.2
Net Cash Provided by Operating Activities			3.6	110.3
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital Spending			(31.8)	(22.1)
Packaging Machinery Spending			0.0	0.0
Acquisition of Businesses, Net of Cash Acquired			(159.4)	(113.6)
Other, Net			0.0	2.9
Net Cash Provided by (Used in) Investing Activities			(191.2)	(132.8)
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			43.6	5.0
Payments on Revolving Credit Facilities			(37.3)	(23.7)
Dividends Paid			0.0	0.0
Repurchase of Common Stock related to Share-Based Payments			0.0	0.0
Other, Net			160.6	0.0
Net Cash (Used in) Provided by Financing Activities			166.9	(18.7)
Effect of Exchange Rate Changes on Cash			1.0	(2.9)
Net (Decrease) Increase in Cash and Cash Equivalents			(19.7)	(44.1)
Cash and Cash Equivalents at Beginning of Period			54.8	79.6
CASH AND CASH EQUIVALENTS AT END OF PERIOD	35.1	35.5	35.1	35.5
Consolidating Eliminations
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	(84.3)	(65.2)	(148.6)	(129.4)
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 Greater (Less) Than Funding			0.0	0.0
Equity in Net Income (Loss) of Subsidiaries	84.3	65.2	148.6	129.4
Other, Net			0.0	0.0
Changes in Operating Assets and Liabilities			0.0	0.0
Net Cash Provided by 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	0.0
Other, Net			38.1	(45.5)
Net Cash Provided by (Used in) Investing Activities			38.1	(45.5)
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			(38.1)	45.5
Net Cash (Used in) Provided by Financing Activities			(38.1)	45.5
Effect of Exchange Rate Changes on Cash			0.0	0.0
Net (Decrease) Increase 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	$ 0.0	$ 0.0