Acquisition - Dispensing systems acquisition (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Apr. 06, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Business Acquisition [Line Items]
Deferred income taxes		$ (395,181)	$ (251,112)	$ (395,181)	$ (251,112)	$ (298,420)
Cash paid at closing, net of cash acquired				1,028,729	0
Total debt - principal		3,123,622	1,828,674	3,123,622	1,828,674	$ 1,571,192
Net sales		1,266,930	1,139,643	3,094,150	2,807,023
Net income		72,382	69,770	123,539	129,655
Dispensing Systems Business Acquisition [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 245,000
Business acquisition, revenue reported by acquired entity for last annual period	570,000
Cash paid at closing, net of cash acquired	1,028,729
Goodwill, Period Increase (Decrease)		17,600
Corporate Segment [Member]
Business Acquisition [Line Items]
Business Combination, Total Acquisition Related Costs		25,200		25,200
Costs attributed to announced acquisitions included in net income		800		23,800
Net sales		0	$ 0	0	0
Dispensing Systems [Member]
Business Acquisition [Line Items]
Net sales		149,800		292,500
Net income		$ 21,000		28,700
Business Combination, Provisional Information, Inventory Write-up Adjustment, Before Income Taxes, Included in Net Income					$ 11,900
Business Combination, Provisional Information, Inventory Write-up Adjustment, Before Income Taxes Excluded From Net Income				$ 11,900
Customer Relationships [Member] | Dispensing Systems Business Acquisition [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 220,000
Acquired finite-lived intangible assets, weighted average useful life	22 years
Technology And Know How [Member] | Dispensing Systems Business Acquisition [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 25,000
Acquired finite-lived intangible assets, weighted average useful life	7 years
Maximum [Member] | Property, Plant and Equipment [Member] | Dispensing Systems Business Acquisition [Member]
Business Acquisition [Line Items]
Acquired Finite-Lived Property, Plant and Equipment, Weighted Average Useful Life	35 years