Acquisitions (Details) - USD ($) $ in Thousands			3 Months Ended		6 Months Ended
	Jun. 01, 2020	Feb. 04, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Business Acquisition [Line Items]
Purchase of business, net of cash acquired					$ 941,102	$ 0
Goodwill			$ 1,668,614	$ 1,146,363	1,668,614	1,146,363	$ 1,142,223
Total debt - principal			3,520,556	2,722,866	3,520,556	2,722,866	2,258,873
Net sales			1,176,470	1,093,163	2,206,854	2,120,294
Bank debt [Member]
Business Acquisition [Line Items]
Total debt - principal			1,296,534	1,361,402	1,296,534	1,361,402	795,830
Bank debt [Member] | U S Term Loans [Member]
Business Acquisition [Line Items]
Total debt - principal			900,000	$ 800,000	900,000	$ 800,000	$ 760,000
Bank debt [Member] | Incremental U S Term Loans [Member]
Business Acquisition [Line Items]
Total debt - principal	$ 900,000
Cobra Plastics, Inc. Business Acquisition [Member]
Business Acquisition [Line Items]
Purchase of business, net of cash acquired		$ 39,800
Goodwill		18,400
Cobra Plastics, Inc. Business Acquisition [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Other intangible assets		$ 11,500
Albea Dispensing Business, Business Acquisition [Member]
Business Acquisition [Line Items]
Purchase of business, net of cash acquired	901,274
Business Combination, Acquisition Related Costs			16,100		18,300
Goodwill	508,894
Trade accounts receivable	48,177
Inventories	41,178
Property, plant, and equipment	167,316
Other intangible assets	287,000
Deferred income tax liabilities	(90,791)
Net sales			29,900		29,900
Trade accounts payable and accrued liabilities	66,506
Total identifiable net assets	392,380
Business Combination, Inventory Write-up Adjustment Before Income Taxes Included in Net Income	3,500
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Assets	42,593
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Debt and Other Liabilities	$ 36,587
Albea Dispensing Business, Business Acquisition [Member] | Maximum [Member]
Business Acquisition [Line Items]
Property, Plant and Equipment, Useful Life	35 years
Albea Dispensing Business, Business Acquisition [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Other intangible assets	$ 260,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	24 years
Albea Dispensing Business, Business Acquisition [Member] | Technology-Based Intangible Assets [Member]
Business Acquisition [Line Items]
Other intangible assets	$ 27,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	8 years
Cobra Plastics and the Albea Dispensing Business
Business Acquisition [Line Items]
Goodwill			527,300		527,300
Cobra Plastics and the Albea Dispensing Business | Customer Relationships [Member]
Business Acquisition [Line Items]
Other intangible assets			271,500		271,500
Cobra Plastics and the Albea Dispensing Business | Technology-Based Intangible Assets [Member]
Business Acquisition [Line Items]
Other intangible assets			$ 27,000		$ 27,000