Revenue from Contracts with Customers (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue [Table Text Block]

A summary by the Company’s reportable segments follows for the years ended December 31:

Twelve months ended December 31, 2021	U.S. Operations		Swiss Operations		Western European Operations		Chinese Operations		Other Operations		Total
Product Revenue	$	1,004,891	$	135,987	$	600,527	$	707,355	$	511,855	$	2,960,615
Service Revenue:
Point in time	218,306		26,764		151,656		48,343		120,860		565,929
Over time	64,786		8,882		77,578		15,953		24,187		191,386
Total	$	1,287,983	$	171,633	$	829,761	$	771,651	$	656,902	$	3,717,930

Twelve months ended December 31, 2020	U.S. Operations		Swiss Operations		Western European Operations		Chinese Operations		Other Operations		Total
Product Revenue	$	815,046	$	112,542	$	509,385	$	526,231	$	441,968	$	2,405,172
Service Revenue:
Point in time	199,247		22,733		135,793		39,705		110,542		508,020
Over time	58,026		8,648		71,537		12,674		21,100		171,985
Total	$	1,072,319	$	143,923	$	716,715	$	578,610	$	573,610	$	3,085,177

Twelve months ended December 31, 2019	U.S. Operations		Swiss Operations		Western European Operations		Chinese Operations		Other Operations		Total
Product Revenue	$	801,181	$	110,390	$	500,978	$	495,579	$	438,717	$	2,346,845
Service Revenue:
Point in time	207,707		20,968		135,612		37,370		109,802		511,459
Over time	48,227		8,141		64,151		11,767		18,062		150,348
Total	$	1,057,115	$	139,499	$	700,741	$	544,716	$	566,581	$	3,008,652

The Company's global revenue mix by product category for the year ended December 31, 2021 is laboratory (56% of sales), industrial (39% of sales), and retail (5% of sales). The Company’s product revenue by reportable segment is proportionately similar to the Company’s global mix with the exception of the Company’s Swiss Operations, which is largely comprised of laboratory products, and the Company’s Chinese Operations, which has a slightly higher percentage of industrial products. A breakdown of the Company’s sales by product category for the year ended December 31 follows:

	2021		2020		2019
Laboratory	$	2,083,025	$	1,669,791	$	1,578,625
Industrial	1,446,544		1,224,497		1,233,970
Retail	188,361		190,889		196,057
Total net sales	$	3,717,930	$	3,085,177	$	3,008,652

A breakdown of net sales to external customers by geographic customer destination, net for the year ended December 31 follows:

	2021		2020		2019
Americas	$	1,419,832	$	1,180,626	$	1,165,847
Europe	1,062,961		921,266		892,092
Asia/Rest of World	1,235,137		983,285		950,713
Total	$	3,717,930	$	3,085,177	$	3,008,652

Contract with Customer, Asset and Liability [Table Text Block]

	2021		2020		2019
Beginning balances as of January 1	$	149,106	$	122,489	$	105,381
Customer prepayments/deferred revenue	711,067		617,643		633,190
Revenue recognized	(667,245)		(595,802)		(615,957)
Foreign currency translation	(280)		4,776		(125)
Ending balance as of December 31	$	192,648	$	149,106	$	122,489