Discontinued Operations, Divestitures and Acquisitions - Summary of Preliminary Allocation of Purchase Price to Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions			9 Months Ended		12 Months Ended
	Aug. 01, 2018	Oct. 02, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total consideration transferred			$ 67.8	$ 25.4
Assets:
Goodwill			1,951.9		$ 1,951.9	$ 1,939.8
Product Care
Assets:
Goodwill			1,430.8		1,430.8	$ 1,412.9
AFP, Inc | Product Care
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total consideration transferred	$ 70.8
Assets:
Cash and cash equivalents	2.9
Trade receivables, net	30.8
Inventories, net	7.1
Prepaid expenses and other current assets	0.7
Property and equipment, net	3.5
Identifiable intangible assets, net	18.6		18.6		18.6
Goodwill	21.6
Other non-current assets	0.7
Total assets	85.9
Liabilities:
Accounts payable	13.8
Other current liabilities	1.3
Total liabilities	$ 15.1
Fagerdala Singapore Pte Ltd. | Product Care
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total consideration transferred		$ 106.6	106.2		(0.4)
Assets:
Cash and cash equivalents		13.3	13.3		13.3
Trade receivables, net		22.4	22.4		22.4
Inventories, net		10.0	10.1		10.1
Prepaid expenses and other current assets		8.4	8.4		8.4
Property and equipment, net		23.3	23.3		23.3
Identifiable intangible assets, net		41.4	42.1		42.1
Goodwill		39.3	37.8		37.8
Total assets		158.1	157.4		157.4
Liabilities:
Short-term borrowings		14.0	14.0		14.0
Accounts payable		6.9	6.9		6.9
Other current liabilities		15.1	15.0		15.0
Long-term debt, less current portion		3.8	3.8		3.8
Non-current deferred taxes		11.7	11.5		11.5
Total liabilities		$ 51.5	$ 51.2		51.2
Measurement Period
Inventories, net					0.1
Identifiable intangible assets, net					0.7
Goodwill					(1.5)
Total assets					(0.7)
Other current liabilities					(0.1)
Non-current deferred taxes					(0.2)
Total liabilities					$ (0.3)