Summary of Significant Accounting Policies (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($) Segment $ / shares shares	Dec. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) $ / shares shares	Mar. 31, 2018 USD ($)
Nature of Operations [Abstract]
Number of reportable segments | Segment	3
Inventories [Abstract]
Inventories include finished and in-process products	$ 320,400	$ 310,400
Raw materials and supplies	170,400	153,100
Intangible assets [Abstract]
Impairment charge	0	0	$ 0
Numerator [Abstract]
Net earnings from continuing operations	$ 157,360	$ 89,600	$ 122,913
Denominator [Abstract]
Denominator for basic EPS - weighted average common shares (in shares) | shares	42,404,000	43,780,000	44,523,000
Effect of dilutive securities (in shares) | shares	95,000	251,000	320,000
Denominator for diluted EPS - diluted weighted average shares outstanding (in shares) | shares	42,499,000	44,031,000	44,843,000
EPS from continuing operations [Abstract]
Basic (in dollars per share) | $ / shares	$ 3.71	$ 2.05	$ 2.76
Diluted (in dollars per share) | $ / shares	$ 3.70	$ 2.03	$ 2.74
Number of antidilutive shares excluded from the diluted EPS calculation (in shares) | shares	0	0	0
Research and Development [Abstract]
Research and development costs	$ 43,000	$ 40,900	$ 40,900
Advertising [Abstract]
Advertising costs	2,500	2,200	2,300
Recently Issued Accounting Pronouncements [Abstract]
Recognition of lease assets and liabilities	(1,389)
Increase to earnings reinvested in the business	1,516,243	1,414,485
Increase to deferred tax assets	9,189	7,885
(Decrease) to prepaid expense and other current assets	(44,857)	(43,206)
(Decrease) to deferred tax liabilities	(28,976)	(18,724)
Collected on sold receivables	$ 91,142	141,465	35,414
Minimum [Member]
Intangible assets [Abstract]
Useful lives of intangible assets	5 years
Maximum [Member]
Intangible assets [Abstract]
Useful lives of intangible assets	20 years
Derivative Financial Instruments [Abstract]
Number of months for contracts to mature	18 months
Building and Leasehold Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Abstract]
Estimated useful lives	5 years
Building and Leasehold Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Abstract]
Estimated useful lives	40 years
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Abstract]
Estimated useful lives	3 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Abstract]
Estimated useful lives	20 years
Forward Exchange Contracts [Member] | Maximum [Member]
Derivative Financial Instruments [Abstract]
Number of months for contracts to mature	18 months
ASU 2016-02 [Member] | Minimum [Member]
Recently Issued Accounting Pronouncements [Abstract]
Recognition of lease assets and liabilities	$ 19,000
ASU 2016-02 [Member] | Maximum [Member]
Recently Issued Accounting Pronouncements [Abstract]
Recognition of lease assets and liabilities	22,000
ASU 2016-15 [Member]
Recently Issued Accounting Pronouncements [Abstract]
Collected on sold receivables	91,142	$ 141,465	$ 35,414
ASU 2016-16 [Member]
Recently Issued Accounting Pronouncements [Abstract]
Increase to earnings reinvested in the business				$ 400
Increase to deferred tax assets				3,000
(Decrease) to prepaid expense and other current assets				(3,700)
(Decrease) to deferred tax liabilities				$ (1,100)
ASU 2018-02 [Member] | AOCI [Member]
Recently Issued Accounting Pronouncements [Abstract]
Recognition of lease assets and liabilities	(1,400)
ASU 2018-02 [Member] | Earnings [Member]
Recently Issued Accounting Pronouncements [Abstract]
Recognition of lease assets and liabilities	$ 1,400