Divestitures - Additional Information (Detail) € in Millions				3 Months Ended			9 Months Ended					12 Months Ended
	Nov. 01, 2015 USD ($)	Nov. 01, 2015 EUR (€)	Apr. 02, 2015 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2016 EUR (€)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)		Dec. 31, 2015 USD ($)
Divestitures And Acquisitions Disclosure [Line Items]
Proceeds from sale of business							$ 7,800,000			$ 75,700,000	[1]
Gain (loss) on sale of business					$ (500,000)		(1,600,000)			28,700,000
Net sales				$ 1,716,600,000	1,746,200,000		5,034,200,000			5,277,600,000
Earnings before income tax provision				$ 172,800,000	126,000,000		$ 408,100,000			300,200,000
European Food Trays Businesses [Member]
Divestitures And Acquisitions Disclosure [Line Items]
Disposal date							Nov. 01, 2015	Nov. 01, 2015
Proceeds from sale of business	$ 19,000,000	€ 17.6					$ 17,700,000	€ 15.7
Purchase price adjustments	$ 1,900,000	€ 1.7
Net sales					14,700,000					43,600,000
Earnings before income tax provision					2,000,000					5,900,000
North American Foam Trays and Absorbent Pads [Member]
Divestitures And Acquisitions Disclosure [Line Items]
Disposal date							Apr. 01, 2015	Apr. 01, 2015
Proceeds from sale of business			$ 75,600,000
Purchase price adjustments			$ 5,900,000
Transaction costs					7,000,000					7,000,000
Disposal Group, Not Discontinued Operations [Member] | European Food Trays Businesses [Member]
Divestitures And Acquisitions Disclosure [Line Items]
Gain (loss) on sale of business							$ 1,600,000
Disposal Group, Not Discontinued Operations [Member] | North American Foam Trays and Absorbent Pads [Member]
Divestitures And Acquisitions Disclosure [Line Items]
Gain (loss) on sale of business					$ 29,200,000					$ 29,200,000		$ 26,500,000
Net sales						$ 52,900,000			$ 0
Earnings before income tax provision						$ 10,300,000			$ 0

[1] For the nine months ended September 30, 2015, certain amounts related to the settlement of a net investment hedge and foreign currency gains and losses were misclassified. Additional revisions were made to the Condensed Consolidated Balance Sheet as of September 30, 2015. As a result, corresponding changes were made on the Condensed Consolidated Statement of Cash Flows. See Note 1 “Organization and Basis of Presentation” under the heading “Reclassifications and Revisions” for further discussion of the revisions.